Instances of Use of United States Armed Forces Abroad, 1798-2023

Changes from March 8, 2022 to June 7, 2023

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Instances of Use of United States Armed
~~March 8, 2022~~June 7, 2023
Forces Abroad, 1798-~~2022~~2023
Barbara Salazar Torreon
This report lists hundreds of instances in which the United States has used its Armed This report lists hundreds of instances in which the United States has used its Armed
Forces Senior Research Librarian Senior Research Librarian
~~Forces~~ abroad in situations of military conflict or potential conflict or for other than abroad in situations of military conflict or potential conflict or for other than

normal peacetime normal peacetime purposes. It was compiled in part from purposes. It was compiled in part from ~~various older lists and is~~previous CRS products and is intended primarily to
Sofia Plagakis
~~intended primarily to~~ provide a provide a ~~rough~~general survey of past U.S. military ventures abroad, survey of past U.S. military ventures abroad,
~~Research Librarian~~
without reference to the without reference to the Research Librarian magnitude of the given instance noted. The listing often magnitude of the given instance noted. The listing often

contains references, especially from contains references, especially from 1980 forward, to continuing military deployments, 1980 forward, to continuing military deployments,
especially U.S. military participation in multinational operations associated with NATO especially U.S. military participation in multinational operations associated with NATO

or the United Nations. Most of these post-1980 or the United Nations. Most of these post-1980 instances are summaries based on instances are summaries based on
presidential reports to Congress related to the War Powers Resolution. A comprehensive commentary regarding presidential reports to Congress related to the War Powers Resolution. A comprehensive commentary regarding
any of the instances listed is not undertaken here. any of the instances listed is not undertaken here.
The instances differ greatly in number of forces, purpose, extent of hostilities, and legal authorization. Eleven The instances differ greatly in number of forces, purpose, extent of hostilities, and legal authorization. Eleven
times in its history, the United States has formally declared war against foreign nations. These 11 U.S. war times in its history, the United States has formally declared war against foreign nations. These 11 U.S. war
declarations encompassed five separate wars: the war with Great Britain declared in 1812; the war with Mexico declarations encompassed five separate wars: the war with Great Britain declared in 1812; the war with Mexico
declared in 1846; the war with Spain declared in 1898; the First World War, during which the United States declared in 1846; the war with Spain declared in 1898; the First World War, during which the United States
declared war with Germany and with Austria-Hungary during 1917; and World War II, during which the United declared war with Germany and with Austria-Hungary during 1917; and World War II, during which the United
States declared war against Japan, Germany, and Italy in 1941, and against Bulgaria, Hungary, and Rumania in States declared war against Japan, Germany, and Italy in 1941, and against Bulgaria, Hungary, and Rumania in
1942. 1942.
Some of the instances were extended military engagements that might be considered undeclared wars. These Some of the instances were extended military engagements that might be considered undeclared wars. These
instances include the Undeclared Naval War with France from 1798 to 1800; the First Barbary War from 1801 to 1805; the include the Undeclared Naval War with France from 1798 to 1800; the First Barbary War from 1801 to 1805; the
Second Barbary War of 1815; the Korean War of 1950-1953; the Vietnam War from 1964 to 1973; the Persian Second Barbary War of 1815; the Korean War of 1950-1953; the Vietnam War from 1964 to 1973; the Persian
Gulf War of 1991; global actions against foreign terrorists after the September 11, 2001, attacks on the United Gulf War of 1991; global actions against foreign terrorists after the September 11, 2001, attacks on the United
States; and the war with Iraq in 2003. With the exception of the Korean War, all of these conflicts received States; and the war with Iraq in 2003. With the exception of the Korean War, all of these conflicts received
congressional authorization in some form short of a formal declaration of war. Other, more recent instances have congressional authorization in some form short of a formal declaration of war. Other, more recent instances have
often involved deployment of U.S. military forces as part of a multinational operation associated with often involved deployment of U.S. military forces as part of a multinational operation associated with ~~NATO or~~
the North Atlantic Treaty Organization (NATO) or the United Nations. the United Nations.
The majority of the instances listed prior to World War II were brief Marine Corps or Navy actions to protect U.S. The majority of the instances listed prior to World War II were brief Marine Corps or Navy actions to protect U.S.
citizens or promote U.S. interests. A number were engagements against pirates or bandits. Covert operations, citizens or promote U.S. interests. A number were engagements against pirates or bandits. Covert operations,
domestic disaster relief, and routine alliance stationing and training exercises are not included here, nor are the domestic disaster relief, and routine alliance stationing and training exercises are not included here, nor are the
Civil and Revolutionary Wars and the continual use of U.S. military units in the exploration, settlement, and Civil and Revolutionary Wars and the continual use of U.S. military units in the exploration, settlement, and
pacification of the western part of the United States. pacification of the western part of the United States.
For additional information, see CRS Report RL31133, For additional information, see CRS Report RL31133, Declarations of War and Authorizations for the Use of
Military Force: Historical Background and Legal Implications, by Jennifer K. Elsea and Matthew C. Weed, CRS , by Jennifer K. Elsea and Matthew C. Weed, CRS
Report R42699, Report R42699, The War Powers Resolution: Concepts and Practice, by Matthew C. Weed; and CRS In Focus , by Matthew C. Weed; and CRS In Focus
IF10539, IF10539, Defense Primer: Legal Authorities for the Use of Military Forces, by Jennifer K. Elsea, CRS In Focus , by Jennifer K. Elsea, CRS In Focus
IF10535, IF10535, Defense Primer: Congress’s Constitutional Authority with Regard to the Armed Forces, by Jennifer K. , by Jennifer K.
Elsea, and CRS In Focus IF10534, Elsea, and CRS In Focus IF10534, Defense Primer: President’s Constitutional Authority with Regard to the
Armed Forces, by Jennifer K. Elsea., by Jennifer K. Elsea.

Congressional Research Service Congressional Research Service

Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~2023

Introduction
The following list reviews hundreds of instances in which the United States has used military The following list reviews hundreds of instances in which the United States has used military
forces abroad in situations of military conflict or potential conflict to protect U.S. citizens or forces abroad in situations of military conflict or potential conflict to protect U.S. citizens or
promote U.S. interests. The list does not include covert actions or promote U.S. interests. The list does not include covert actions or ~~numerous~~the many occurrences in which occurrences in which
U.S. forces have been stationed abroad since World War II in occupation forces or for U.S. forces have been stationed abroad since World War II in occupation forces or for
participation in mutual security organizations, base agreements, or routine military assistance or participation in mutual security organizations, base agreements, or routine military assistance or
training operations. Because of differing judgments over the actions to be included, other lists training operations. Because of differing judgments over the actions to be included, other lists
may include more or fewer instances.1 may include more or fewer instances.1
~~These cases~~The instances vary greatly in size of operation, legal authorization, and significance. The number of vary greatly in size of operation, legal authorization, and significance. The number of
troops involved ranges from a few sailors or marines landed to protect American lives and troops involved ranges from a few sailors or marines landed to protect American lives and
property to hundreds of thousands in Korea and Vietnam and millions in World War II. Some property to hundreds of thousands in Korea and Vietnam and millions in World War II. Some
actions were of actions were of very short duration, and some lasted short duration, and some lasted ~~a number of~~ years. In some examples, a military years. In some examples, a military
officer acted without authorization; some actions were conducted solely under the President’s officer acted without authorization; some actions were conducted solely under the President’s
powers as Chief Executive or Commander in Chief; other instances were authorized by Congress powers as Chief Executive or Commander in Chief; other instances were authorized by Congress
in some fashion. In 11 separate cases (listed in in some fashion. In 11 separate cases (listed in bold-face type)), the United States formally the United States formally
declared war against foreign nations. For most of the instances listed, however, the status of the declared war against foreign nations. For most of the instances listed, however, the status of the
action under domestic or international law has not been addressed. Most occurrences listed since action under domestic or international law has not been addressed. Most occurrences listed since
1980 are summaries of U.S. military deployments reported to Congress by the President as a 1980 are summaries of U.S. military deployments reported to Congress by the President as a
result of the War Powers Resolution. Several of these presidential reports are summaries of result of the War Powers Resolution. Several of these presidential reports are summaries of
activities related to an ongoing operation previously reported. Note that inclusion in this list does activities related to an ongoing operation previously reported. Note that inclusion in this list does
not connote either not connote either the legality or legality or the level of significance of the instance described. This report covers level of significance of the instance described. This report covers
uses of U.S. military force abroad from 1798 to uses of U.S. military force abroad from 1798 to ~~February 24, 2022~~April 2023. It will be revised as . It will be revised as
circumstances warrant. circumstances warrant.

1 Other lists include Sen. Barry Goldwater, “War without Declaration: A Chronological List of 199 U.S. Military 1 Other lists include Sen. Barry Goldwater, “War without Declaration: A Chronological List of 199 U.S. Military
Hostilities Abroad without a Declaration of War. 1798-1972,” Hostilities Abroad without a Declaration of War. 1798-1972,” Congressional Record, vol. 119, July 20, 1973: S14174-, vol. 119, July 20, 1973: S14174-
S14183; U.S. Department of State, “Armed Actions Taken by the United States Without a Declaration of War, 1789-S14183; U.S. Department of State, “Armed Actions Taken by the United States Without a Declaration of War, 1789-
1967,” Research Project 806A, Historical Studies Division, Bureau of Public Affairs; John M. Collins, 1967,” Research Project 806A, Historical Studies Division, Bureau of Public Affairs; John M. Collins, America’s Small
Wars (New York: Brassey’s, 1991). For a discussion of the evolution of lists of military actions and legal authorization (New York: Brassey’s, 1991). For a discussion of the evolution of lists of military actions and legal authorization
for various actions, see Francis D. Wormuth and Edwin B. Firmage, for various actions, see Francis D. Wormuth and Edwin B. Firmage, To Chain the Dog of War; the War Power of
Congress in History and Law (Dallas: Southern Methodist University Press, 1986), pp. 133-149. (Dallas: Southern Methodist University Press, 1986), pp. 133-149.
Congressional Research Service Congressional Research Service
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Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~2023

Listing of Notable Deployments of U.S. Military
Forces Overseas, 1798-~~February 2022~~April 2023
1798-1800 1798-1800
Undeclared Naval War with France. This contest included land actions, such as that in the Dominican This contest included land actions, such as that in the Dominican
Republic, city of Puerto Plata, where marines captured a French privateer under the guns of the forts. Republic, city of Puerto Plata, where marines captured a French privateer under the guns of the forts.
Congress authorized military action through a series of statutes. Congress authorized military action through a series of statutes.
1801-1805 1801-1805
Tripoli, Libya. The First Barbary War included the USS The First Barbary War included the USS George Washington and and Philadelphia affairs and the affairs and the
Eaton expedition, during which a few marines landed with United States Agent Wil iam Eaton to raise Eaton expedition, during which a few marines landed with United States Agent Wil iam Eaton to raise
a force against Tripoli in an effort to free the crew of the a force against Tripoli in an effort to free the crew of the Philadelphia. Tripoli declared war on the Tripoli declared war on the
United States on May 10, 1801, and although Congress authorized U.S. military action by statute, they United States on May 10, 1801, and although Congress authorized U.S. military action by statute, they
never voted on a formal declaration of war. never voted on a formal declaration of war.
1806 1806
Mexico (Spanish territory). Captain Z. M. Pike, with a platoon of troops, invaded Spanish territory at the . Captain Z. M. Pike, with a platoon of troops, invaded Spanish territory at the
headwaters of the Rio Grande on orders from General James Wilkinson. He was made prisoner headwaters of the Rio Grande on orders from General James Wilkinson. He was made prisoner
without resistance at a fort he constructed in present-day Colorado, taken to Mexico, and later without resistance at a fort he constructed in present-day Colorado, taken to Mexico, and later
released after seizure of his papers. released after seizure of his papers.
1806-1810 1806-1810
Gulf of Mexico. American gunboats operated from New Orleans against Spanish and French privateers American gunboats operated from New Orleans against Spanish and French privateers
off the Mississippi Delta, chiefly under Captain John Shaw and Master Commandant David Porter. off the Mississippi Delta, chiefly under Captain John Shaw and Master Commandant David Porter.
1810 1810
West Florida (Spanish territory). Governor Wil iam Charles Cole Claiborne of Louisiana, on orders of Governor Wil iam Charles Cole Claiborne of Louisiana, on orders of
the President, occupied with troops territory in dispute east of the Mississippi River as far as the the President, occupied with troops territory in dispute east of the Mississippi River as far as the
Pearl River, later the eastern boundary of Louisiana. He was authorized to seize as far east as the Pearl River, later the eastern boundary of Louisiana. He was authorized to seize as far east as the
Perdido River. Perdido River.
1812 1812
Amelia Island and other parts of east Florida, then under Spain. Temporary possession was authorized by Temporary possession was authorized by
President President James Madison and by Congress, to prevent occupation by any other power; but possession was Madison and by Congress, to prevent occupation by any other power; but possession was
obtained by General George Matthews in so irregular a manner that his measures were disavowed by obtained by General George Matthews in so irregular a manner that his measures were disavowed by
the President. the President.
1812-1815
War of 1812. On June 18, 1812, the United States declared war between the United
States and the United Kingdom of Great Britain and Ireland. Among the issues leading to Among the issues leading to
the war were British interception of neutral ships and blockades of the United States during British the war were British interception of neutral ships and blockades of the United States during British
hostilities with France. hostilities with France.
1813 1813
West Florida (Spanish territory). On authority given by Congress, General Wilkinson seized Mobile Bay On authority given by Congress, General Wilkinson seized Mobile Bay
in April with 600 soldiers. A small Spanish garrison gave way. The United States advanced into in April with 600 soldiers. A small Spanish garrison gave way. The United States advanced into
disputed territory to the Perdido River, as projected in 1810. No fightingdisputed territory to the Perdido River, as projected in 1810. No fighting took place. .
1813-1814 1813-1814
Marquesas Islands. U.S. forces built a fort on the Pacific island of Nuku Hiva, the largest of the U.S. forces built a fort on the Pacific island of Nuku Hiva, the largest of the
Marquesas, to protect three prize ships which had been captured from the British. Marquesas, to protect three prize ships which had been captured from the British.
1814 1814
Spanish Florida. General Andrew Jackson took Pensacola Bay and drove out the British, in September General Andrew Jackson took Pensacola Bay and drove out the British, in September
1814 with whom the United States was at war and pacified the Spanish governor of Florida. This 1814 with whom the United States was at war and pacified the Spanish governor of Florida. This
capture of Pensacola was crucial to Jackson securing victory during the battle of New Orleans in capture of Pensacola was crucial to Jackson securing victory during the battle of New Orleans in
November 1814. November 1814.
1814-1825 1814-1825
Caribbean. Engagements between pirates and American ships or squadrons took place repeatedly, Engagements between pirates and American ships or squadrons took place repeatedly,
especial y ashore and offshore about Cuba, Puerto Rico, Santo Domingo, and Yucatan. Three especial y ashore and offshore about Cuba, Puerto Rico, Santo Domingo, and Yucatan. Three
thousand pirate attacks on merchantmen were reported between 1815 and 1823. In 1822, thousand pirate attacks on merchantmen were reported between 1815 and 1823. In 1822,
Commodore James Biddle deployed a squadron of two frigates, four sloops of war, two brigs, four Commodore James Biddle deployed a squadron of two frigates, four sloops of war, two brigs, four
schooners, and two gunboats in the West Indies. schooners, and two gunboats in the West Indies.
1815 1815
Algiers. The second Barbary War was declared against the United States by the Bey of Algiers of the The second Barbary War was declared against the United States by the Bey of Algiers of the
Barbary states, an act not reciprocated by the United States. Congress did authorize a military Barbary states, an act not reciprocated by the United States. Congress did authorize a military
expedition by statutes. A large fleet under U.S. Commodore Stephen Decatur attacked Algiers and expedition by statutes. A large fleet under U.S. Commodore Stephen Decatur attacked Algiers and
obtained indemnities. obtained indemnities.
Tripoli, Libya. After securing an agreement from Algiers, Decatur demonstrated with his squadron at Tunis After securing an agreement from Algiers, Decatur demonstrated with his squadron at Tunis
and Tripoli, where he secured indemnities for offenses during the War of 1812. and Tripoli, where he secured indemnities for offenses during the War of 1812.
Congressional Research Service Congressional Research Service
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Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~2023

1816 1816
Spanish Florida. ~~United States~~U.S. forces destroyed Nichol s Fort, forces destroyed Nichol s Fort, ~~also called Negro Fort,~~ located in located in
present Franklin County, Florida, which harbored raiders making forays into United States territory. present Franklin County, Florida, which harbored raiders making forays into United States territory.
1816-1818 1816-1818
Spanish Florida——First Seminole War. The Seminole Indians, whose area was a haven for escaped slaves The Seminole Indians, whose area was a haven for escaped slaves
and border ruffians, were attacked by troops under Generals Andrew Jackson and Edmund P. Gaines and border ruffians, were attacked by troops under Generals Andrew Jackson and Edmund P. Gaines
and pursued into northern Florida. Spanish posts were attacked and occupied, British citizens and pursued into northern Florida. Spanish posts were attacked and occupied, British citizens
executed. In 1819, the Floridas were ceded to the United States. executed. In 1819, the Floridas were ceded to the United States.
1817 1817
Amelia Island (Spanish territory off northeast Florida). Under orders of President James Monroe, United Under orders of President James Monroe, United
States forces landed and expelled a group of smugglers, adventurers, and freebooters. States forces landed and expelled a group of smugglers, adventurers, and freebooters.
1818 1818
Oregon. The USS The USS Ontario landed at the Columbia River and in August took possession of the Oregon landed at the Columbia River and in August took possession of the Oregon
territory. Britain had ceded sovereigntyterritory. Britain had ceded sovereignty, but Russia and Spain asserted claims to the area. but Russia and Spain asserted claims to the area.
1820-1823 1820-1823
Africa. Naval units raided the slave traffic pursuant to the Act of 1819 by Congress which authorized Naval units raided the slave traffic pursuant to the Act of 1819 by Congress which authorized
U.S. armed vessels to interdict slave traders in an attempt to stop slave trade at its source and return U.S. armed vessels to interdict slave traders in an attempt to stop slave trade at its source and return
slaves to Africa. slaves to Africa.
1822 1822
Cuba. United States naval forces suppressing piracy landed on the northwest coast of Cuba and United States naval forces suppressing piracy landed on the northwest coast of Cuba and
burned a pirate station. burned a pirate station.
1823 1823
Cuba. Brief landings in pursuit of pirates occurred April 8 Brief landings in pursuit of pirates occurred April 8, 1823, near Escondido; April 16 near Cayo Blanco; near Escondido; April 16 near Cayo Blanco;
July 11 at Siquapa Bay; July 21 at Cape Cruz; and October 23 at Camarioca. July 11 at Siquapa Bay; July 21 at Cape Cruz; and October 23 at Camarioca.
1824 1824
Cuba. In October In October 1824, the USS the USS Porpoise landed bluejackets near Matanzas in pursuit of pirates. landed bluejackets near Matanzas in pursuit of pirates.
Puerto Rico (Spanish territory). Commodore David Porter with a landing party of 200 attacked the town Commodore David Porter with a landing party of 200 attacked the town
of Fajardo, which had sheltered pirates and insulted American naval officers forcing an apology. of Fajardo, which had sheltered pirates and insulted American naval officers forcing an apology.
Commodore Porter was later court-martialed for overstepping his authority. Commodore Porter was later court-martialed for overstepping his authority.
1825 1825
Cuba. ~~During~~In March March 1825, cooperating American and British forces landed at Sagua La Grande, along the , cooperating American and British forces landed at Sagua La Grande, along the
north coast of the Vil a Clara province, to capture pirates. north coast of the Vil a Clara province, to capture pirates.
1827 1827
Greece. In October and November In October and November 1827, landing parties hunted pirates on the Mediterranean islands of landing parties hunted pirates on the Mediterranean islands of
Argentière, Miconi, and Andros. Argentière, Miconi, and Andros.
1831-1832 1831-1832
Falkland Islands/Malvinas, Argentina. Captain Duncan of the USS Captain Duncan of the USS Lexington investigated the capture of three American investigated the capture of three American
sealing vessels and sought to protect American interests.sealing vessels and sought to protect American interests.2
1832 1832
Sumatra. From February 6 to 9February 6 to 9~~. A~~, 1832, a naval force landed and stormed a fort to punish naval force landed and stormed a fort to punish ~~natives~~residents of the town of of the town of
Quallah Battoo for plundering the American ship Quallah Battoo for plundering the American ship Friendship.
1833 1833
Argentina. From October 31 to November 15October 31 to November 15~~. A~~, 1833, a naval force was sent ashore at Buenos Aires to protect the force was sent ashore at Buenos Aires to protect the
interests of the United States and other countries during an insurrection. interests of the United States and other countries during an insurrection.
1835-1836 1835-1836
Peru. December 10, 1835, to January 24, 1836, and August 31 to December 7, 1836. Marines December 10, 1835, to January 24, 1836, and August 31 to December 7, 1836. Marines
protected American interests in Callao and Lima during an attempted revolution. protected American interests in Callao and Lima during an attempted revolution.
1836 1836
Mexico. General Gaines occupied Nacogdoches (Texas), disputed territory, from July to December General Gaines occupied Nacogdoches (Texas), disputed territory, from July to December
1836, during the Texan war for independence under orders to cross the “imaginary boundary line” if an during the Texan war for independence under orders to cross the “imaginary boundary line” if an
Indian outbreak threatened. Indian outbreak threatened.
1838-1839 1838-1839
Sumatra. December 24, 1838, to January 4, 1839. A naval force landed to punish December 24, 1838, to January 4, 1839. A naval force landed to punish ~~natives~~residents of the towns of the towns
of Quallah Battoo and Muckie (Meukek) for depredations on American shipping. of Quallah Battoo and Muckie (Meukek) for depredations on American shipping.
1840 1840
Fiji Islands. July. Naval forces landed to punish July. Naval forces landed to punish ~~natives~~inhabitants for attacking American exploring and surveying for attacking American exploring and surveying
parties. parties.
1841 1841
Taputeoiea (Tabiteuea) or Drummond’s Island, Kingsmill Group. A naval party landed to avenge the A naval party landed to avenge the
murder of Navy Seaman John Anderson by murder of Navy Seaman John Anderson by ~~the native warriors.~~
~~Samoa.~~ ~~February 24. A~~indigenous warriors. 2 Christian J. Maisch, “The Falkland/Malvinas Islands Clash of 1831–32: U.S. and British Diplomacy in the South Atlantic,” Diplomatic History, Vol. 24, No. 2 (Spring 2000), at https://www.jstor.org/stable/24913798. Congressional Research Service 3 Instances of Use of United States Armed Forces Abroad, 1798-2023 Samoa. February 24, 1841, a naval party landed and burned towns after the murder of an American sailor naval party landed and burned towns after the murder of an American sailor
on Upolu Island. This was the second engagement with islanders of the Pacific Ocean during the on Upolu Island. This was the second engagement with islanders of the Pacific Ocean during the
United States Exploring Expedition. United States Exploring Expedition.
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1842 1842
Mexico. Commodore T.A.C. Jones, in command of a squadron long cruising off California, occupied Commodore T.A.C. Jones, in command of a squadron long cruising off California, occupied
Monterey, CA, on October 19, Monterey, CA, on October 19, 1842, believing war had come. That not being the case, he withdrew. believing war had come. That not being the case, he withdrew.
1843 1843
China. Sailors and marines from the USS Sailors and marines from the USS St. Louis were landed after a clash between Americans and were landed after a clash between Americans and
Chinese at the trading post in Canton (Chinese at the trading post in Canton (~~now~~ Guangzhou). Guangzhou).
Africa. From November 29 to December 16November 29 to December 16~~. Four~~, 1843, four United States vessels demonstrated and landed various United States vessels demonstrated and landed various
parties (one of 200 marines and sailors) to discourage piracy and the slave trade along the Ivory parties (one of 200 marines and sailors) to discourage piracy and the slave trade along the Ivory
Coast and to punish attacks by the Coast and to punish attacks by the ~~natives~~locals on American merchant seamen and shipping. on American merchant seamen and shipping.
1844 1844
Mexico. U.S. President John Tyler deployed U.S. forces to protect Texas against Mexico, pending U.S. President John Tyler deployed U.S. forces to protect Texas against Mexico, pending
Senate approval of a treaty of annexation (later rejected). He defended his action against a Senate Senate approval of a treaty of annexation (later rejected). He defended his action against a Senate
resolution of inquiry. resolution of inquiry.
1846-1848
Mexican War. On May 13, 1846, the United States recognized the existence of a state of
war with Mexico. After the annexation of Texas in 1845, the United States and Mexico failed to After the annexation of Texas in 1845, the United States and Mexico failed to
resolve a boundary dispute, and U.S. President James K. Polk said that it was necessary to deploy resolve a boundary dispute, and U.S. President James K. Polk said that it was necessary to deploy
forces in Mexico to meet a threatened invasion. forces in Mexico to meet a threatened invasion.
1849 1849
Smyrna (İzmir, Turkey). In July, a naval force gained release of an American seized by Austrian officials. In July, a naval force gained release of an American seized by Austrian officials.
1851 1851
Turkey. After a massacre of foreigners (including Americans) at Jaffa in January After a massacre of foreigners (including Americans) at Jaffa in January 1851, a demonstration by the , a demonstration by the
Mediterranean Squadron was ordered along the Turkish (Levant) coast. Mediterranean Squadron was ordered along the Turkish (Levant) coast.
Johanns Island (east of Africa). August. Forces from the U.S. sloop of war USS August. Forces from the U.S. sloop of war USS Dale exacted redress for exacted redress for
the unlawful imprisonment of the captain of an American whaling brig. the unlawful imprisonment of the captain of an American whaling brig.
1852-1853 1852-1853
Argentina. February 3 to 12, 1852; September 17, 1852, to April 1853. Marines were landed and February 3 to 12, 1852; September 17, 1852, to April 1853. Marines were landed and
maintained in Buenos Aires to protect American interests during a revolution. maintained in Buenos Aires to protect American interests during a revolution.
1853 1853
Nicaragua. From March 11 to 13March 11 to 13., 1853, U.S. forces landed to protect American lives and interests during political U.S. forces landed to protect American lives and interests during political
disturbances. disturbances.
1853-1854 1853-1854
Japan. Commodore Matthew C. Perry and his naval expedition made a display of force leading to the Commodore Matthew C. Perry and his naval expedition made a display of force leading to the
“opening of Japan.” “opening of Japan.”
Ryukyu and Bonin Islands. Commodore Perry on three visits before going to Japan and while waiting Commodore Perry on three visits before going to Japan and while waiting
for a reply from Japan made a naval demonstration, landing marines twice, and secured a coaling for a reply from Japan made a naval demonstration, landing marines twice, and secured a coaling
concession from the ruler of Naha on Okinawa. Perry also held a naval demonstration in the Bonin concession from the ruler of Naha on Okinawa. Perry also held a naval demonstration in the Bonin
Islands, an archipelago of over 30 subtropical and tropical islands over 600 miles south of Tokyo, with Islands, an archipelago of over 30 subtropical and tropical islands over 600 miles south of Tokyo, with
the purpose of securing facilities for commerce. the purpose of securing facilities for commerce.
1854 1854
China. April 4 to June 15 to 17 April 4 to June 15 to 17, 1854. American and English ships landed forces to protect American . American and English ships landed forces to protect American
interests in and near Shanghai during Chinese civil strife. interests in and near Shanghai during Chinese civil strife.
Nicaragua. July 9 to 15. Naval forces bombarded and burned San Juan del Norte (Greytown) to . July 9 to 15. Naval forces bombarded and burned San Juan del Norte (Greytown) to
avenge an insult to the American Minister to Nicaragua. avenge an insult to the American Minister to Nicaragua.
1855 1855
China. May 19 to 21 May 19 to 21, 1855. U.S. forces protected American interests in Shanghai and, from August 3 to 5, . U.S. forces protected American interests in Shanghai and, from August 3 to 5,
fought pirates near Hong Kong. fought pirates near Hong Kong.
Fiji Islands. September 12 to November 4 September 12 to November 4, 1855. An American naval force landed to seek reparations for . An American naval force landed to seek reparations for
depredations on American residents and seamen. depredations on American residents and seamen.
Uruguay. November 25 to 29 November 25 to 29, 1855. United States and European naval forces landed to protect American . United States and European naval forces landed to protect American
interests during an attempted revolution in Montevideo. interests during an attempted revolution in Montevideo.
1856 1856
Panama, Republic of New Grenada. September 19 to 22. September 19 to 22, 1856. U.S. forces landed to protect American . U.S. forces landed to protect American
interests during an insurrection. interests during an insurrection.
China. October 22 to December 6 October 22 to December 6, 1856. U.S. forces landed to protect American interests at Canton . U.S. forces landed to protect American interests at Canton (~~(now~~
Guangzhou) during hostilities between the British and the Chinese and to avenge an assault upon an Guangzhou) during hostilities between the British and the Chinese and to avenge an assault upon an
unarmed boat displaying the United States flag. unarmed boat displaying the United States flag.
Congressional Research Service 4 Instances of Use of United States Armed Forces Abroad, 1798-2023 1857 1857
Nicaragua. April to May, November to December April to May, November to December 1857. In May, Commander C.H. Davis, with some . In May, Commander C.H. Davis, with some
marines, received the surrender of Wil iam Walker, who had been attempting to gain control of the marines, received the surrender of Wil iam Walker, who had been attempting to gain control of the
country and protected his men from the retaliation of country and protected his men from the retaliation of ~~native~~local allies who had been fighting Walker. In allies who had been fighting Walker. In
November and December of the same year, United States vessels November and December of the same year, United States vessels Saratoga, , Wabash, and , and Fulton
~~Congressional Research Service~~
4

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

opposed another attempt by Wil iam Walker to take control of Nicaragua. Commodore Hiram opposed another attempt by Wil iam Walker to take control of Nicaragua. Commodore Hiram
Paulding’s act of landing marines and compelling the removal of Walker to the United States was Paulding’s act of landing marines and compelling the removal of Walker to the United States was
tacitly disavowed by Secretary of State Lewis Cass, and Paulding was forced into retirement. tacitly disavowed by Secretary of State Lewis Cass, and Paulding was forced into retirement.
1858 1858
Uruguay. January 2 to 27 January 2 to 27, 1858. Forces from two United States warships landed to protect American . Forces from two United States warships landed to protect American
property during a revolution in Montevideo. property during a revolution in Montevideo.
Fiji Islands. October 6 to 16 October 6 to 16, 1858. A U.S. marine expedition burned . A U.S. marine expedition burned ~~a native~~an indigenous vil age in retaliation for the vil age in retaliation for the
murder of two American traders on the island of Waya. murder of two American traders on the island of Waya.
1858-1859 1858-1859
Turkey. The Secretary of State requested a display of naval force along the Levant after a massacre of The Secretary of State requested a display of naval force along the Levant after a massacre of
Americans at Jaffa and mistreatment elsewhere “to remind the authorities (of Turkey) of the power Americans at Jaffa and mistreatment elsewhere “to remind the authorities (of Turkey) of the power
of the United States.” of the United States.”
1859 1859
Paraguay. Congress authorized a naval squadron to seek redress for an attack on a naval vessel in the Congress authorized a naval squadron to seek redress for an attack on a naval vessel in the
Parana River during 1855. Apologies were made after a large display of force. Parana River during 1855. Apologies were made after a large display of force.
Mexico. Two hundred United States soldiers crossed the Rio Grande in pursuit of the Mexican bandit Two hundred United States soldiers crossed the Rio Grande in pursuit of the Mexican bandit
Juan Cortina. Juan Cortina.
China. July 31 to August 2 July 31 to August 2, 1859. A naval force landed to protect American interests in Shanghai. . A naval force landed to protect American interests in Shanghai.
1860 1860
Angola, Portuguese West Africa. March 1. March 1, 1860. American residents at Kissembo called upon American and . American residents at Kissembo called upon American and
British ships to protect lives and property during problems with British ships to protect lives and property during problems with ~~natives~~locals. .
Colombia (Bay of Panama). September 27 to October 8 September 27 to October 8, 1860. Naval forces landed to protect American . Naval forces landed to protect American
interests during a revolution. interests during a revolution.
1863 1863
Japan. July 16. The USS July 16. The USS Wyoming retaliated against a firing on the American vessel retaliated against a firing on the American vessel Pembroke at at
Shimonoseki. Shimonoseki.
1864 1864
Japan. July 14 to August 3 July 14 to August 3, 1864. Naval forces protected the United States Minister to Japan when he visited . Naval forces protected the United States Minister to Japan when he visited
Yedo (Edo) to negotiate American claims against Japan and to make his negotiations easier by Yedo (Edo) to negotiate American claims against Japan and to make his negotiations easier by
impressing the Japanese with American power. impressing the Japanese with American power.
Japan. September 4 to 14 September 4 to 14, 1864. Naval forces of the United States, Great Britain, France, and the . Naval forces of the United States, Great Britain, France, and the
Netherlands compelled Japan and the Prince of Nagato in particular to permit the Straits of Netherlands compelled Japan and the Prince of Nagato in particular to permit the Straits of
Shimonoseki to be used by foreign shipping in accordance with treaties already signed. Shimonoseki to be used by foreign shipping in accordance with treaties already signed.
1865 1865
Panama. March 9 and 10 March 9 and 10, 1865. U.S. forces protected the lives and property of American residents during a . U.S. forces protected the lives and property of American residents during a
revolution. revolution.
1866 1866
China. From June 20 to July 7, From June 20 to July 7, 1866, U.S. forces punished an assault on the American consul at Newchwang U.S. forces punished an assault on the American consul at Newchwang
(Yingkou). (Yingkou).
Mexico. To protect American residents, General Sedgwick and 100 men in November compelled the To protect American residents, General Sedgwick and 100 men in November compelled the
surrender of Matamoras. Three days later, he was ordered to withdraw and the act was repudiated surrender of Matamoras. Three days later, he was ordered to withdraw and the act was repudiated
by the President. by the President.
1867 1867
Nicaragua. Marines occupied Managua and Leon. Marines occupied Managua and Leon.
Formosa. June 13 June 13, 1867. A naval force landed and burned a number of huts to punish the murder of the . A naval force landed and burned a number of huts to punish the murder of the
crew of a wrecked American vessel. crew of a wrecked American vessel.
1868 1868
Japan (Osaka, Hiolo, Nagasaki, Yokohama, and Negata). February 4 to 8, April 4 to May 12, June 12 and February 4 to 8, April 4 to May 12, June 12 and
1313, 1868. U.S. forces were landed to protect American interests during the civil war in Japan. . U.S. forces were landed to protect American interests during the civil war in Japan.
Uruguay. February 7 and 8, 19 to 26 February 7 and 8, 19 to 26, 1868. U.S. forces protected foreign residents and the customhouse . U.S. forces protected foreign residents and the customhouse
during an insurrection at Montevideo. during an insurrection at Montevideo.
Colombia. April. U.S. forces protected passengers and treasure in transit at Aspinwall (Colón) in the April. U.S. forces protected passengers and treasure in transit at Aspinwall (Colón) in the
absence of local police or troops on the occasion of the death of the president of Colombia. absence of local police or troops on the occasion of the death of the president of Colombia.
1870 1870
Mexico. June 17 and 18 June 17 and 18, 1870. U.S. forces destroyed the pirate ship . U.S. forces destroyed the pirate ship Forward, which had run aground in the , which had run aground in the
~~Rio Tecapán.~~
Rio Tecapán. Congressional Research Service 5 Instances of Use of United States Armed Forces Abroad, 1798-2023 Hawaiian Islands. September 21. U.S. forces landed and placed the American flag at the Honolulu September 21. U.S. forces landed and placed the American flag at the Honolulu
consulate at half-mast upon the death of Queen Kalama. consulate at half-mast upon the death of Queen Kalama.
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1871 1871
Korea. June 10 to 12 June 10 to 12, 1871. A U.S. naval force attacked and captured five forts to punish . A U.S. naval force attacked and captured five forts to punish ~~natives~~locals for for
depredations on Americans, particularly for murdering the crew of the USS depredations on Americans, particularly for murdering the crew of the USS General Sherman and and
burning the schooner and for later firing on other American small boats taking soundings up the Salee burning the schooner and for later firing on other American small boats taking soundings up the Salee
River. River.
1873 1873
Colombia (Bay of Panama). May 7 to 22, September 23 to October 9 May 7 to 22, September 23 to October 9, 1873. U.S. forces protected American . U.S. forces protected American
interests during hostilities between local groups over control of the government of the State of interests during hostilities between local groups over control of the government of the State of
Panama. Panama.
1873-1896 1873-1896
Mexico. United States troops crossed the Mexican border repeatedly in pursuit of cattle thieves and United States troops crossed the Mexican border repeatedly in pursuit of cattle thieves and
other brigands. There were some reciprocal pursuits by Mexican troops into border territory. other brigands. There were some reciprocal pursuits by Mexican troops into border territory.
Mexico protested frequently. Notable cases were at Remolino in May 1873 and at Las Cuevas in Mexico protested frequently. Notable cases were at Remolino in May 1873 and at Las Cuevas in
1875. While Washington often supported these excursions, formal agreements between Mexico and 1875. While Washington often supported these excursions, formal agreements between Mexico and
the United States, the first in 1882, finally legitimized such raids. They continued intermittently, with the United States, the first in 1882, finally legitimized such raids. They continued intermittently, with
minor disputes, until 1896. minor disputes, until 1896.
1874 1874
Hawaiian Islands. February 12 to 20 February 12 to 20, 1874. Detachments from American vessels were landed to preserve . Detachments from American vessels were landed to preserve
order and protect American lives and interests during the coronation of a new king. order and protect American lives and interests during the coronation of a new king.
1876 1876
Mexico. May 18 May 18, 1876. Marines were sent to police the town of Matamoros temporarily to protect . Marines were sent to police the town of Matamoros temporarily to protect
American citizens and property while it was without other government. American citizens and property while it was without other government.
1882 1882
Egypt. July 14 to 18 July 14 to 18, 1882. American forces landed to protect American interests during warfare between . American forces landed to protect American interests during warfare between
British forces and Egyptians and the looting of the city of Alexandria by locals. British forces and Egyptians and the looting of the city of Alexandria by locals.
1885 1885
Panama (Colón). January 18 and 19 January 18 and 19, 1885. U.S. forces were used to guard valuables in transit over the . U.S. forces were used to guard valuables in transit over the
Panama Railroad and the safes and vaults of the Panama Railroad company during revolutionary Panama Railroad and the safes and vaults of the Panama Railroad company during revolutionary
activity. From March through May in the cities of Colón and Panama City, U.S. forces helped activity. From March through May in the cities of Colón and Panama City, U.S. forces helped
reestablish freedom of transit during revolutionary strife. reestablish freedom of transit during revolutionary strife.
1888 1888
Korea. June. A naval force was sent ashore to protect American residents in Seoul during unsettled . June. A naval force was sent ashore to protect American residents in Seoul during unsettled
political conditions when an outbreak of the populace was expected. political conditions when an outbreak of the populace was expected.
Haiti. December 20 December 20, 1888. A display of force persuaded the Haitian government to give up an American . A display of force persuaded the Haitian government to give up an American
steamer that had been seized on the charge of breach of blockade. steamer that had been seized on the charge of breach of blockade.
1888-1889 1888-1889
Samoa. November 14, 1888, to March 20, 1889. U.S. forces were landed to protect American citizens November 14, 1888, to March 20, 1889. U.S. forces were landed to protect American citizens
and the consulate during a and the consulate during a ~~native~~ civil war. civil war.
1889 1889
Hawaiian Islands. July 30 and 31 July 30 and 31, 1889. U.S. forces protected American interests at Honolulu during a . U.S. forces protected American interests at Honolulu during a
revolution. revolution.
1890 1890
Argentina. A naval party landed to protect the U.S. consulate and legation in Buenos Aires. A naval party landed to protect the U.S. consulate and legation in Buenos Aires.
1891 1891
Haiti. U.S. forces sought to protect American interest in U.S. forces sought to protect American interest in guano, an organic fertilizer, on the , an organic fertilizer, on the
uninhabited Navassa Island. uninhabited Navassa Island.
Bering Strait. June 22 to October 5. June 22 to October 5, 1891. The Bering Sea Squadron, combined operations by the U.S. and . The Bering Sea Squadron, combined operations by the U.S. and
British navies, sought to stop seal poaching by boarding and expelling dozens of merchant vessels British navies, sought to stop seal poaching by boarding and expelling dozens of merchant vessels
around the Aleutian islands. around the Aleutian islands.
Chile. August 28 to 30. The USS . August 28 to 30. The USS Baltimore and USS and USS San Francisco landed a party commanded by landed a party commanded by
Captain Wil iam S. Muce, USMC, to guard the U.S. Consulate at Valparaiso during the Chilean civil Captain Wil iam S. Muce, USMC, to guard the U.S. Consulate at Valparaiso during the Chilean civil
war. war.
1893 1893
Hawaii. January 16 to April 1. January 16 to April 1, 1893. Marines were landed ostensibly to protect American lives and property, . Marines were landed ostensibly to protect American lives and property,
but many believed actually to promote a provisional government under Sanford B. Dole. This action but many believed actually to promote a provisional government under Sanford B. Dole. This action
was disavowed by the United States. was disavowed by the United States.
1894 1894
Brazil. January. A display of naval force sought to protect American commerce and shipping at Rio de . January. A display of naval force sought to protect American commerce and shipping at Rio de
Janeiro during a Brazilian civil war. Janeiro during a Brazilian civil war.
Congressional Research Service 6 Instances of Use of United States Armed Forces Abroad, 1798-2023 Nicaragua. July 6 to August 7. July 6 to August 7, 1894. U.S. forces sought to protect American interests at Bluefields fol owing . U.S. forces sought to protect American interests at Bluefields fol owing
~~a revolution.~~
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

a revolution. 1894-1895 1894-1895
China. In March 1894, Marines from the gunboat USS In March 1894, Marines from the gunboat USS Monocacy provided an honor guard for the provided an honor guard for the
Chinese viceroy’s official visit to the U.S. consulate at Tientsin (Chinese viceroy’s official visit to the U.S. consulate at Tientsin (~~now~~ Tianjin). Tianjin).
China. A naval vessel was beached and used as a fort at Newchwang ( A naval vessel was beached and used as a fort at Newchwang (~~now~~ Yingkou) for protection of Yingkou) for protection of
American nationals. American nationals.
1894-1896 1894-1896
Korea. July 24, 1894, to April 3, 1896. A guard of marines was sent to protect the American legation . July 24, 1894, to April 3, 1896. A guard of marines was sent to protect the American legation
and American lives and interests at Seoul during and fol owing the Sino-Japanese War. and American lives and interests at Seoul during and fol owing the Sino-Japanese War.
1895 1895
Colombia. March 8 to 9. March 8 to 9, 1895. Lieutenant Ben Hebard Ful er led a landing party at Boca del Toro to protect . Lieutenant Ben Hebard Ful er led a landing party at Boca del Toro to protect
American lives and property threatened by a political revolt. American lives and property threatened by a political revolt.
1896 1896
Nicaragua. May 2 to 4. May 2 to 4, 1896. U.S. forces protected American interests in Corinto during political unrest. . U.S. forces protected American interests in Corinto during political unrest.
1898 1898
Nicaragua. February 7 and 8. February 7 and 8, 1898. U.S. forces protected American lives and property at San Juan del Sur. . U.S. forces protected American lives and property at San Juan del Sur.
1898
The Spanish-American War. On April 25, 1898, the United States declared war with
Spain. The war fol owed a Cuban insurrection against Spanish rule and the sinking of the USS The war fol owed a Cuban insurrection against Spanish rule and the sinking of the USS Maine
in the harbor at Havana. in the harbor at Havana.
1898-1899 1898-1899
China. November 5, 1898, to March 15, 1899. U.S. forces provided a guard for the legation at Peking . November 5, 1898, to March 15, 1899. U.S. forces provided a guard for the legation at Peking
(Beijing) and the consulate at Tientsin and the consulate at Tientsin ~~during contest~~(Tianjin) during a contest for political control between the Dowager Empress and her son. between the Dowager Empress and her son.
1899 1899
Nicaragua. American and British naval forces were landed to protect national interests at San Juan del American and British naval forces were landed to protect national interests at San Juan del
Norte, February 22 to March 5, Norte, February 22 to March 5, 1899, and at Bluefields a few weeks later in connection with the and at Bluefields a few weeks later in connection with the
insurrection of General Juan P. Reyes. insurrection of General Juan P. Reyes.
Samoa. February-May 15. February-May 15, 1899. American and British naval forces were landed to protect national interests . American and British naval forces were landed to protect national interests
and to take part in a bloody contention over the succession to the throne. and to take part in a bloody contention over the succession to the throne.
1899-1901 1899-1901
Philippine Islands. U.S. forces protected American interests fol owing the war with Spain and U.S. forces protected American interests fol owing the war with Spain and
conquered the islands by defeating the Filipinos in their war for independence. conquered the islands by defeating the Filipinos in their war for independence.
1900 1900
China. May 24 to September 28. May 24 to September 28, 1900. American troops participated in operations to protect foreign lives . American troops participated in operations to protect foreign lives
during the Boxer during the Boxer ~~rising~~Uprising, particularly at Peking, particularly at Peking (Beijing). For many years after this experience, a permanent . For many years after this experience, a permanent
legation guard was maintained in Peking legation guard was maintained in Peking (Beijing) and was strengthened at times as trouble threatened. and was strengthened at times as trouble threatened.
1901 1901
Colombia (State of Panama). November 20 to December 4. November 20 to December 4, 1901. U.S. forces protected American property . U.S. forces protected American property
on the Isthmus and kept transit lines open during serious revolutionary disturbances. on the Isthmus and kept transit lines open during serious revolutionary disturbances.
1902 1902
Colombia. April 16 to 23. April 16 to 23, 1902. U.S. forces protected American lives and property at Bocas del Toro during . U.S. forces protected American lives and property at Bocas del Toro during
a civil war. a civil war.
Colombia (State of Panama). September 17 to November 18. September 17 to November 18, 1902. The United States placed armed guards . The United States placed armed guards
on all trains crossing the Isthmus to keep the railroad line open, and stationed ships on both sides of on all trains crossing the Isthmus to keep the railroad line open, and stationed ships on both sides of
Panama to prevent the landing of Colombian troops. Panama to prevent the landing of Colombian troops.
1903 1903
Honduras. March 23 to 30 or 31. March 23 to 30 or 31, 1903. U.S. forces protected the American consulate and the steamship . U.S. forces protected the American consulate and the steamship
wharf at Puerto Cortez during a period of revolutionary activity. wharf at Puerto Cortez during a period of revolutionary activity.
Dominican Republic. March 30 to April 21. March 30 to April 21, 1903. A detachment of . A detachment of U.S. marines was landed to protect American marines was landed to protect American
interests in the city of Santo Domingo during a revolutionary outbreak. interests in the city of Santo Domingo during a revolutionary outbreak.
Syria. September 7 to 12 September 7 to 12, 1903. U.S. forces protected the American consulate in Beirut when a local . U.S. forces protected the American consulate in Beirut when a local
~~Moslem~~ uprising was feared. uprising was feared.
1903-1904 1903-1904
Abyssinia. Twenty-five marines were sent to Abyssinia Twenty-five marines were sent to Abyssinia (modern day Ethiopia) to protect the U.S. Consul General while he to protect the U.S. Consul General while he
negotiated a treaty. negotiated a treaty.
1903-1914 1903-1914
Panama. U.S. forces sought to protect American interests and lives during and fol owing the U.S. forces sought to protect American interests and lives during and fol owing the
revolution for independence from Colombia over construction of the Isthmian Canal. With brief revolution for independence from Colombia over construction of the Isthmian Canal. With brief
~~intermissions, United States Marines~~ Congressional Research Service 7 Instances of Use of United States Armed Forces Abroad, 1798-2023 intermissions, U.S. marines were stationed on the Isthmus from November 4, 1903, to were stationed on the Isthmus from November 4, 1903, to
January 21, 1914, to guard American interests. January 21, 1914, to guard American interests.
1904 1904
Dominican Republic. January 2 to February 11. January 2 to February 11, 1904. American and British naval forces established an area in . American and British naval forces established an area in
which no fighting would be allowed and protected American interests in Puerto Plata and Sosúa and which no fighting would be allowed and protected American interests in Puerto Plata and Sosúa and
Santo Domingo City during revolutionary fighting. Santo Domingo City during revolutionary fighting.
~~Congressional Research Service~~
7

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Tangier, Morocco. A squadron demonstrated to force the release of a kidnapped Americans Ion A squadron demonstrated to force the release of a kidnapped Americans Ion
Hanford Perdicaris and Cromwell Varley. Marines were landed to protect the consul general. Hanford Perdicaris and Cromwell Varley. Marines were landed to protect the consul general.
Panama. November 17 to 24. November 17 to 24, 1904. U.S. forces protected American lives and property at Ancon at the time . U.S. forces protected American lives and property at Ancon at the time
of a threatened insurrection. of a threatened insurrection.
1904-1905 1904-1905
Korea. January 5, 1904, to November 11, 1905. A guard of . January 5, 1904, to November 11, 1905. A guard of ~~Marines~~marines was sent to protect the American was sent to protect the American
legation in Seoul during the Russo-Japanese War. legation in Seoul during the Russo-Japanese War.
1906-1909 1906-1909
Cuba. September 1906 to January 23, 1909. U.S. forces sought to restore order, protect foreigners, . September 1906 to January 23, 1909. U.S. forces sought to restore order, protect foreigners,
and establish a stable government after serious revolutionary activity. and establish a stable government after serious revolutionary activity.
1907 1907
Honduras. March 18 to June 8 March 18 to June 8, 1907. To protect American interests during a war between Honduras and . To protect American interests during a war between Honduras and
Nicaragua, Nicaragua, U.S. troops were stationed in Trujil o, La Ceiba, Puerto Cortez, San Pedro, Laguna, and troops were stationed in Trujil o, La Ceiba, Puerto Cortez, San Pedro, Laguna, and
Choloma. Choloma.
1910 1910
Nicaragua. May 19 to September 4. May 19 to September 4, 1910. U.S. forces protected American interests at Bluefields. U.S. forces protected American interests at Bluefields, an area where U.S. marines were stationed. .
1911 1911
Honduras. January 26. January 26, 1911. American naval detachments were landed to protect American lives and . American naval detachments were landed to protect American lives and
interests during a civil war in Honduras. interests during a civil war in Honduras.
China. As the nationalist revolution approached, in October As the nationalist revolution approached, in October 1911 an ensign and 10 men tried to enter an ensign and 10 men tried to enter
Wuchang Wuchang (Wuhan) to rescue missionaries but retired on being warned away, and a small landing force guarded to rescue missionaries but retired on being warned away, and a small landing force guarded
American private property and consulate at Hankow (Hankou). Marines were deployed in November American private property and consulate at Hankow (Hankou). Marines were deployed in November
to guard the cable stations at Shanghai; landing forces were sent for protection in to guard the cable stations at Shanghai; landing forces were sent for protection in ~~Nanking, Chinkiang,~~
~~Taku~~Nanking (Nanjing), Chinkiang (Zhenjiang), Taku, Japan, and elsewhere. , and elsewhere.
1912 1912
Honduras. A small force landed to prevent seizure by the government of an American-owned railroad A small force landed to prevent seizure by the government of an American-owned railroad
at Puerto Cortez. The forces were withdrawn after the United States disapproved the action. at Puerto Cortez. The forces were withdrawn after the United States disapproved the action.
Panama. U.S. troops, on request of both political parties, supervised elections outside the Canal Zone. U.S. troops, on request of both political parties, supervised elections outside the Canal Zone.
Cuba. June 5 to August 5. June 5 to August 5, 1912. U.S. forces protected American interests on the Province of Oriente . U.S. forces protected American interests on the Province of Oriente
(before 1905 known as Santiago de Cuba Province), and in Havana. (before 1905 known as Santiago de Cuba Province), and in Havana.
China. August 24 to 26, . August 24 to 26, on1912. On Kentucky Island, and August 26 to 30 at Camp Nicholson. U.S. forces Kentucky Island, and August 26 to 30 at Camp Nicholson. U.S. forces
protected Americans and American interests during revolutionary activity. protected Americans and American interests during revolutionary activity.
Turkey. November 18 to December 3 November 18 to December 3, 1912. U.S. forces guarded the American legation at Constantinople . U.S. forces guarded the American legation at Constantinople
~~during a~~(Istanbul) during the First Balkan War. Balkan War.
1912-1925 1912-1925
Nicaragua. August to November 1912. U.S. forces protected American interests during an attempted August to November 1912. U.S. forces protected American interests during an attempted
revolution. A small force, serving as a legation guard and seeking to promote peace and stability, revolution. A small force, serving as a legation guard and seeking to promote peace and stability,
remained until August 5, 1925. remained until August 5, 1925.
1912-1941 1912-1941
China. The disorders which began with the overthrow of the dynasty during The disorders which began with the overthrow of the dynasty during the Kuomintang rebellion in Kuomintang rebellion in
1912, which were redirected by the invasion of China by Japan, led to demonstrations and landing 1912, which were redirected by the invasion of China by Japan, led to demonstrations and landing
parties for the protection of U.S. interests in China parties for the protection of U.S. interests in China ~~continuously and at many points~~that continued from 1912 on to from 1912 on to
1941. The guard at Peking 1941. The guard at Peking (Beijing) and along the route to the sea was maintained until 1941. In 1927, the and along the route to the sea was maintained until 1941. In 1927, the
United States had 5,670 troops ashore in China and 44 naval vessels in its waters. In 1933 the United United States had 5,670 troops ashore in China and 44 naval vessels in its waters. In 1933 the United
States had 3,027 armed men ashore. The protective action was generally based on treaties with China States had 3,027 armed men ashore. The protective action was generally based on treaties with China
concluded from 1858 to 1901. concluded from 1858 to 1901.
1913 1913
Mexico. September 5 to 7. September 5 to 7, 1913. A few marines landed at Estero de Ciaris to aid in evacuating American . A few marines landed at Estero de Ciaris to aid in evacuating American
citizens and others from the Yaqui Valley, made dangerous for foreigners by civil strife. citizens and others from the Yaqui Valley, made dangerous for foreigners by civil strife.
1914 1914
Haiti. January 29 to February 9, February 20 to 21, October 19. January 29 to February 9, February 20 to 21, October 19, 1914. Intermittently, U.S. naval forces . Intermittently, U.S. naval forces
protected American nationals in a time of rioting and revolution. protected American nationals in a time of rioting and revolution.
Congressional Research Service 8 Instances of Use of United States Armed Forces Abroad, 1798-2023 Dominican Republic. June and July June and July 1914. During a revolutionary movement, United States naval forces by . During a revolutionary movement, United States naval forces by
gunfire stopped the bombardment of Puerto Plata, and by threat of force maintained Santo Domingo gunfire stopped the bombardment of Puerto Plata, and by threat of force maintained Santo Domingo
City as a neutral zone. City as a neutral zone.
1914-1917 1914-1917
Mexico. Undeclared Mexican-American hostilities fol owed the Dolphin affair and Vil a’s raids and Undeclared Mexican-American hostilities fol owed the Dolphin affair and Vil a’s raids and
included capture of Vera Cruz and later Pershing’s expedition into northern Mexico. included capture of Vera Cruz and later Pershing’s expedition into northern Mexico.
1915-1934 1915-1934
Haiti. July 28, 1915, to August 15, 1934. U.S. forces maintained order during a period of chronic . July 28, 1915, to August 15, 1934. U.S. forces maintained order during a period of chronic
political instability. political instability.
~~Congressional Research Service~~
8

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1916 1916
China. American forces landed to quell a riot taking place on American property in Nanking American forces landed to quell a riot taking place on American property in Nanking (Nanjing). .
1916-1924 1916-1924
Dominican Republic. May 1916 to September 1924. American naval forces maintained order during a . May 1916 to September 1924. American naval forces maintained order during a
period of chronic and threatened insurrection. period of chronic and threatened insurrection.
1917 1917
China. American troops were landed at Chungking American troops were landed at Chungking (Chongqing) to protect American lives during a political crisis. to protect American lives during a political crisis.
1917-1918
World War I. On April 6, 1917, the United States declared war with Germany and on
December 7, 1917, with Austria-Hungary. Entrance of the United States into the war was Entrance of the United States into the war was
precipitated by Germany’s submarine warfare against neutral shipping. precipitated by Germany’s submarine warfare against neutral shipping.
1917-1922 1917-1922
Cuba. U.S. forces protected American interests during an insurrection and subsequent unsettled U.S. forces protected American interests during an insurrection and subsequent unsettled
conditions. Most of the United States Armed Forces left Cuba by August 1919, but two companies conditions. Most of the United States Armed Forces left Cuba by August 1919, but two companies
remained at Camaguey until February 1922. remained at Camaguey until February 1922.
1918-1919 1918-1919
Mexico. After withdrawal of the Pershing expedition, U.S. troops entered Mexico in pursuit of bandits After withdrawal of the Pershing expedition, U.S. troops entered Mexico in pursuit of bandits
at least three times in 1918 and six times in 1919. In August 1918at least three times in 1918 and six times in 1919. In August 1918, American and Mexican troops American and Mexican troops
fought at Nogales. fought at Nogales.
1918-1920 1918-1920
Panama. U.S. forces were used for police duty according to treaty stipulations, in Chiriquí Province, U.S. forces were used for police duty according to treaty stipulations, in Chiriquí Province,
during election disturbances and subsequent unrest. during election disturbances and subsequent unrest.
Soviet Russia. Marines were landed at and near Vladivostok in June and July to protect the American Marines were landed at and near Vladivostok in June and July to protect the American
consulate and other points in the fighting between the Bolshevik troops and the Czech Army, which consulate and other points in the fighting between the Bolshevik troops and the Czech Army, which
had traversed Siberia from the western front. A joint proclamation of emergency government and had traversed Siberia from the western front. A joint proclamation of emergency government and
neutrality was issued by the American, Japanese, British, French, and Czech commanders in July. In neutrality was issued by the American, Japanese, British, French, and Czech commanders in July. In
August 7,000 men were landed in Vladivostok and remained until January 1920, as part of an allied August 7,000 men were landed in Vladivostok and remained until January 1920, as part of an allied
occupation force. In September 1918, 5,000 American troops joined the allied intervention force at occupation force. In September 1918, 5,000 American troops joined the allied intervention force at
Archangel and remained until June 1919. These operations were in response to the Bolshevik Archangel and remained until June 1919. These operations were in response to the Bolshevik
revolution in Russia and were partly supported by Czarist or Kerensky elements. revolution in Russia and were partly supported by Czarist or Kerensky elements.
1919 1919
Dalmatia. U.S. forces were landed at Trau ( U.S. forces were landed at Trau (~~now~~ Trogir, Croatia) at the request of Italian authorities to Trogir, Croatia) at the request of Italian authorities to
police order between the Italians and Serbs. police order between the Italians and Serbs.
Turkey. Marines from the USS Marines from the USS Arizona were landed to guard the U.S. Consulate during the Greek were landed to guard the U.S. Consulate during the Greek
occupation of Constantinopleoccupation of Constantinople (Istanbul). .
Honduras. September 8 to 12. September 8 to 12, 1919. A landing force was sent ashore to maintain order in a neutral zone . A landing force was sent ashore to maintain order in a neutral zone
during an attempted revolution. during an attempted revolution.
1920 1920
China. March 14. March 14, 1920. A landing force was sent ashore for a few hours to protect lives during a disturbance . A landing force was sent ashore for a few hours to protect lives during a disturbance
at Kiukiang (Jiujiang). at Kiukiang (Jiujiang).
Guatemala. April 9 to 27 April 9 to 27, 1920. U.S. forces protected the American legation and other American interests, . U.S. forces protected the American legation and other American interests,
such as the cable station, during a period of fighting between Unionists and the government of such as the cable station, during a period of fighting between Unionists and the government of
Guatemala. Guatemala.
1920-1922 1920-1922
Russia (Siberia). February 16, 1920, to November 19, 1922. A . February 16, 1920, to November 19, 1922. A ~~Marine~~marine guard was sent to protect the guard was sent to protect the
United States radio station and property on Russian Island, Bay of Vladivostok. United States radio station and property on Russian Island, Bay of Vladivostok.
1921 1921
Panama-Costa Rica. American naval squadrons demonstrated in April on both sides of the Isthmus to American naval squadrons demonstrated in April on both sides of the Isthmus to
prevent war between the two countries over a boundary dispute. prevent war between the two countries over a boundary dispute.
Congressional Research Service 9 Instances of Use of United States Armed Forces Abroad, 1798-2023 1922 1922
Turkey. September and October. September and October 1922. A landing force was sent ashore with consent of both Greek and . A landing force was sent ashore with consent of both Greek and
Turkish authorities to protect American lives and property when the Turkish Nationalists entered Turkish authorities to protect American lives and property when the Turkish Nationalists entered
Smyrna. Smyrna.
1922-1923 1922-1923
China. Between April 1922 and November 1923 Between April 1922 and November 1923, U.S. marines were landed five times to protect Americans marines were landed five times to protect Americans
during periods of unrest. during periods of unrest.
1924 1924
Honduras. February 28 to March 31, September 10 to 15. February 28 to March 31, September 10 to 15, 1924. U.S. forces protected American lives and . U.S. forces protected American lives and
interests during election hostilities. interests during election hostilities.
China. September. Marines were landed to protect Americans and other foreigners in Shanghai during . September. Marines were landed to protect Americans and other foreigners in Shanghai during
Chinese factional hostilities. Chinese factional hostilities.
~~Congressional Research Service~~
9

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1925 1925
China. January 15 to August 29. January 15 to August 29, 1925. Fighting of Chinese factions accompanied by riots and demonstrations . Fighting of Chinese factions accompanied by riots and demonstrations
in Shanghai brought the landing of American forces to protect lives and property in the International in Shanghai brought the landing of American forces to protect lives and property in the International
Settlement. Settlement.
Honduras. April 19 to 21 April 19 to 21, 1925. U.S. forces protected foreigners at La Ceiba during a political upheaval. . U.S. forces protected foreigners at La Ceiba during a political upheaval.
Panama. October 12 to 23. October 12 to 23, 1925. Strikes and rent riots led to the landing of about 600 American troops to . Strikes and rent riots led to the landing of about 600 American troops to
keep order and protect American interests. keep order and protect American interests.
1926-1933 1926-1933
Nicaragua. May 7 to June 5, 1926; August 27, 1926, to January 3, 1933. The coup d’état of General . May 7 to June 5, 1926; August 27, 1926, to January 3, 1933. The coup d’état of General
Chamorro aroused revolutionary activities leading to the landing of American marines to protect the Chamorro aroused revolutionary activities leading to the landing of American marines to protect the
interests of the United States. United States forces came and went intermittently until January 3, interests of the United States. United States forces came and went intermittently until January 3,
1933. 1933.
1926 1926
China. August and September. August and September 1926. The Nationalist attack on Hankow. The Nationalist attack on Hankow (Hankou) brought the landing brought the landing of U.S. ~~of American~~
naval forces to protect American citizens. A small guard was maintained at the naval forces to protect American citizens. A small guard was maintained at the American consulate general even consulate general even
after September 16, when the rest of the forces were withdrawn. Likewise, when Nationalist forces after September 16, when the rest of the forces were withdrawn. Likewise, when Nationalist forces
captured Kiukiangcaptured Kiukiang, (Jiujiang), U.S. naval forces were landed for the protection of foreigners naval forces were landed for the protection of foreigners from November 4 to 6November 4 to 6, 1926. .
1927 1927
China. February. February 1927. Fighting at Shanghai caused American naval forces and marines to be increased. In . Fighting at Shanghai caused American naval forces and marines to be increased. In
March, a naval guard was stationed at the American consulate at NankingMarch, a naval guard was stationed at the American consulate at Nanking (Nanjing) after Nationalist forces after Nationalist forces
captured the city. American and British destroyers later used shell fire to protect Americans and captured the city. American and British destroyers later used shell fire to protect Americans and
other foreigners. Subsequentlyother foreigners. Subsequently, additional forces of additional forces of U.S. marines and naval vessels were stationed in the marines and naval vessels were stationed in the
vicinity of Shanghai and Tientsinvicinity of Shanghai and Tientsin (Tianjin). .
1932 1932
China. American forces were landed to protect American interests during the Japanese occupation of American forces were landed to protect American interests during the Japanese occupation of
Shanghai. Shanghai.
1933 1933
Cuba. During a revolution against President Gerardo Machado During a revolution against President Gerardo Machado, U.S. naval forces demonstrated but no naval forces demonstrated but no
landing was made. landing was made.
1934 1934
China. Marines landed at Foochow Marines landed at Foochow (Fuzhou) to protect the American to protect the American ~~Consulate~~consulate. .
1940 1940
Newfoundland, Bermuda, St. Lucia, Bahamas, Jamaica, Antigua, Trinidad, and British Guiana. Troops were Troops were
sent to guard air and naval bases obtained by negotiation with Great Britain. These were sometimes sent to guard air and naval bases obtained by negotiation with Great Britain. These were sometimes
called lend-lease bases. called lend-lease bases.
1941 1941
Greenland. Greenland was taken under protection of the United States in April Greenland was taken under protection of the United States in April 1941. .
Netherlands (Dutch Guiana). In November In November ~~the President~~, President Franklin D. Roosevelt ordered American troops to occupy Dutch ordered American troops to occupy Dutch
Guiana, but by agreement with the Netherlands government in exileGuiana, but by agreement with the Netherlands government in exile,. Brazil cooperated to protect Brazil cooperated to protect
aluminum ore supply from the bauxite mines in Surinam. aluminum ore supply from the bauxite mines in Surinam.
Iceland. Iceland was taken under the protection of the United States, with consent of its government, Iceland was taken under the protection of the United States, with consent of its government,
for strategic reasons. for strategic reasons.
Germany. ~~Sometime in the spring, the~~In spring 1941, President President Roosevelt ordered the ordered the U.S. Navy to patrol ship lanes to Europe. By Navy to patrol ship lanes to Europe. By
JulyJuly, U.S. warships were convoying and by September were attacking German submarines. In U.S. warships were convoying and by September were attacking German submarines. In
November, the Neutrality Act was partly repealed to protect U.S. military aid to Britain. November, the Neutrality Act was partly repealed to protect U.S. military aid to Britain.
1941-1945
World War II. On December 8, 1941, the United States declared war with Japan, on
December 11 with Germany and Italy, and on June 5, 1942, with Bulgaria, Hungary, and
Congressional Research Service 10 Instances of Use of United States Armed Forces Abroad, 1798-2023 Romania. The United States declared war against Japan after the surprise bombing of Pearl Harbor, The United States declared war against Japan after the surprise bombing of Pearl Harbor,
and against Germany and Italy after those nations, under the dictators Hitler and Mussolini, declared and against Germany and Italy after those nations, under the dictators Hitler and Mussolini, declared
war against the United States. The United States declared war against Bulgaria, Hungary, and Romania war against the United States. The United States declared war against Bulgaria, Hungary, and Romania
in response to the declarations of war by those nations against the United States. in response to the declarations of war by those nations against the United States.
1945 1945
China. In October In October 1945, 50,000 U.S. , 50,000 U.S. ~~Marines~~marines were sent to North China to assist Chinese Nationalist were sent to North China to assist Chinese Nationalist
authorities in disarming and repatriating the Japanese in China and in control ing ports, railroads, and authorities in disarming and repatriating the Japanese in China and in control ing ports, railroads, and
airfields. This was in addition to approximately 60,000 U.S. forces remaining in China at the end of airfields. This was in addition to approximately 60,000 U.S. forces remaining in China at the end of
World War II. World War II.
1946 1946
Trieste, Italy. President President Harry Truman ordered the augmentation of U.S. troops along the zonal occupation line Truman ordered the augmentation of U.S. troops along the zonal occupation line
and the reinforcement of air forces in northern Italy after Yugoslav forces shot down an unarmed and the reinforcement of air forces in northern Italy after Yugoslav forces shot down an unarmed
U.S. Army transport plane flying over Friuli Venezia Giulia. Earlier U.S. naval units had been U.S. Army transport plane flying over Friuli Venezia Giulia. Earlier U.S. naval units had been
dispatched to the scene. dispatched to the scene.
~~Congressional Research Service~~
10

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1948 1948
Palestine. A marine consular guard was sent to Jerusalem to protect the U.S. Consul General. A marine consular guard was sent to Jerusalem to protect the U.S. Consul General.
Berlin, Germany. After the Soviet Union established a land blockade of the U.S., British, and French sectors of After the Soviet Union established a land blockade of the U.S., British, and French sectors of
Berlin on June 24, 1948, the United States and its allies airlifted supplies to Berlin until after the Berlin on June 24, 1948, the United States and its allies airlifted supplies to Berlin until after the
blockade was lifted in May 1949. blockade was lifted in May 1949.
1948-1949 1948-1949
China. Marines were dispatched to Nanking Marines were dispatched to Nanking (Nanjing) to protect the American embassy when the city fell to to protect the American embassy when the city fell to
Communist troops, and to Shanghai to aid in the protection and evacuation of Americans. Communist troops, and to Shanghai to aid in the protection and evacuation of Americans.
1950-1953 1950-1953
Korean War. The United States responded to The United States responded to the North Korean invasion of South Korea by going to its North Korean invasion of South Korea by going to its
assistance, pursuant to United Nations Security Council resolutions. U.S. forces deployed in Korea assistance, pursuant to United Nations Security Council resolutions. U.S. forces deployed in Korea
exceeded 300,000 during the last year of the conflict. Over 36,600 U.S. military were kil ed in action. exceeded 300,000 during the last year of the conflict. Over 36,600 U.S. military were kil ed in action.
1950-1955 1950-1955
Formosa (Taiwan). In June 1950 at the beginning of the Korean War, President Truman ordered the In June 1950 at the beginning of the Korean War, President Truman ordered the
U.S. Seventh Fleet to prevent Chinese Communist attacks upon FormosaU.S. Seventh Fleet to prevent Chinese Communist attacks upon Formosa (Taiwan) and Chinese Nationalist and Chinese Nationalist
operations against mainland China. operations against mainland China.
1954-1955 1954-1955
China. Naval units evacuated U.S. civilians and military personnel from the Tachen (Dachen) Islands. Naval units evacuated U.S. civilians and military personnel from the Tachen (Dachen) Islands.
1956 1956
Egypt. A marine battalion evacuated U.S. nationals and other persons from Alexandria during the Suez A marine battalion evacuated U.S. nationals and other persons from Alexandria during the Suez
crisis. crisis.
1958 1958
Lebanon. Marines were landed in Lebanon at the invitation of its government to help protect against Marines were landed in Lebanon at the invitation of its government to help protect against
threatened insurrection supported from the outside. threatened insurrection supported from the outside. ~~The President~~President Dwight Eisenhower’s action was supported by a ’s action was supported by a
congressional resolution passed in 1957 that authorized such actions in that area of the world. congressional resolution passed in 1957 that authorized such actions in that area of the world.
1959-1960 1959-1960
The Caribbean. The 2nd Marine Ground Task Force was deployed to protect U.S. nationals during the 2nd Marine Ground Task Force was deployed to protect U.S. nationals during the
Cuban crisis. Cuban crisis.
1962 1962
Thailand. The 3rd Marine Expeditionary Unit landed on May 17, 1962, to support that country during The 3rd Marine Expeditionary Unit landed on May 17, 1962, to support that country during
the threat of Communist pressure from outside; by July 30 the 5,000 marines had been withdrawn. the threat of Communist pressure from outside; by July 30 the 5,000 marines had been withdrawn.
Cuba. On October 22, On October 22, ~~President~~1962, President John F. Kennedy instituted “quarantine” on the shipment of offensive Kennedy instituted “quarantine” on the shipment of offensive
missiles to Cuba from the Soviet Union. He also warned the Soviet Union that the launching of any missiles to Cuba from the Soviet Union. He also warned the Soviet Union that the launching of any
missile from Cuba against any nation in the Western Hemisphere would bring about U.S. nuclear missile from Cuba against any nation in the Western Hemisphere would bring about U.S. nuclear
retaliation on the Soviet Union. A negotiated settlement was achieved in a few days. retaliation on the Soviet Union. A negotiated settlement was achieved in a few days.
1962-1975 1962-1975
Laos. From October 1962 until 1975, the United States played an important role in military support of From October 1962 until 1975, the United States played an important role in military support of
anti-Communist forces in Laos. anti-Communist forces in Laos.
1964 1964
Congo. The United States sent four transport planes to provide airlift for Congolese troops during a The United States sent four transport planes to provide airlift for Congolese troops during a
rebellion and to transport Belgian paratroopers to rescue foreigners. rebellion and to transport Belgian paratroopers to rescue foreigners.
1964-1973 1964-1973
Vietnam War. U.S. military advisers had been in South Vietnam for a decade, and their numbers had U.S. military advisers had been in South Vietnam for a decade, and their numbers had
been increased as the military position of the Saigon government became weaker. After citing what he been increased as the military position of the Saigon government became weaker. After citing what he
termed were attacks on U.S. destroyers in the Tonkin Gulf, President termed were attacks on U.S. destroyers in the Tonkin Gulf, President Lyndon B. Johnson asked in Johnson asked in August 1964 August 1964
for a resolution expressing U.S. determination to support freedom and protect peace in Southeast for a resolution expressing U.S. determination to support freedom and protect peace in Southeast
Asia. Congress responded with the Tonkin Gulf Resolution, expressing support for “all necessary Asia. Congress responded with the Tonkin Gulf Resolution, expressing support for “all necessary
measures” the President might take to repel armed attack against U.S. forces and prevent measures” the President might take to repel armed attack against U.S. forces and prevent Congressional Research Service 11 Instances of Use of United States Armed Forces Abroad, 1798-2023 further further
aggression. Fol owing this resolution, and fol owing a Communist attack on a U.S. installation in aggression. Fol owing this resolution, and fol owing a Communist attack on a U.S. installation in
central Vietnam, the United States escalated its participation in the war to a peak of 543,000 military central Vietnam, the United States escalated its participation in the war to a peak of 543,000 military
personnel by April 1969. personnel by April 1969.
1965 1965
Dominican Republic. The United States intervened to protect lives and property during a Dominican The United States intervened to protect lives and property during a Dominican
revolt and sent more troops as fears grew that the revolutionary forces were coming increasingly revolt and sent more troops as fears grew that the revolutionary forces were coming increasingly
under Communist control. under Communist control.
1967 1967
Congo. The United States sent three military transport aircraft with crews to provide the Congo The United States sent three military transport aircraft with crews to provide the Congo
central government with logistical support during a revolt. central government with logistical support during a revolt.
1970 1970
Cambodia. U.S. troops were ordered into Cambodia to clean out Communist sanctuaries from which U.S. troops were ordered into Cambodia to clean out Communist sanctuaries from which
Viet Cong and North Vietnamese attacked U.S. and South Vietnamese forces in Vietnam. The object Viet Cong and North Vietnamese attacked U.S. and South Vietnamese forces in Vietnam. The object
of this attack, which lasted from April 30 to June 30, was to ensure the continuing safe withdrawal of of this attack, which lasted from April 30 to June 30, was to ensure the continuing safe withdrawal of
American forces from South Vietnam and to assist the program of Vietnamization. American forces from South Vietnam and to assist the program of Vietnamization.
~~Congressional Research Service~~
11

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1974 1974
Evacuation from Cyprus. ~~United States~~U.S. naval forces evacuated naval forces evacuated ~~U.S. civilians~~American civilians from the island during hostilities between during hostilities between
Turkish and Greek Cypriot forces. Turkish and Greek Cypriot forces.
1975 1975
Evacuation from Vietnam. On April 3, 1975, President On April 3, 1975, President Gerald Ford reported U.S. naval vessels, helicopters, and Ford reported U.S. naval vessels, helicopters, and
marines had been sent to assist in evacuation of refugees and U.S. nationals from Vietnam.marines had been sent to assist in evacuation of refugees and U.S. nationals from Vietnam.23
Evacuation from Cambodia. On April 12, 1975, President Ford reported that he had ordered U.S. On April 12, 1975, President Ford reported that he had ordered U.S.
military forces to proceed with the planned evacuation of U.S. citizens from Cambodia. military forces to proceed with the planned evacuation of U.S. citizens from Cambodia.
South Vietnam. On April 30, 1975, President Ford reported that a force of 70 evacuation helicopters On April 30, 1975, President Ford reported that a force of 70 evacuation helicopters
and 865 marines had evacuated about 1,400 U.S. citizens and 5,500 third country nationals and South and 865 marines had evacuated about 1,400 U.S. citizens and 5,500 third country nationals and South
Vietnamese from landing zones near the U.S. embassy in SaigonVietnamese from landing zones near the U.S. embassy in Saigon (Ho Chi Minh City) and the Tan Son Nhut Airfield. and the Tan Son Nhut Airfield.
Mayaguez incident. On May 15, 1975, President Ford reported he had ordered military forces to On May 15, 1975, President Ford reported he had ordered military forces to
retake the SS retake the SS Mayaguez, a merchant vessel en route from Hong Kong to Thailand with a U.S. citizen , a merchant vessel en route from Hong Kong to Thailand with a U.S. citizen
crew which was seized by Cambodian naval patrol boats in international waters and forced to crew which was seized by Cambodian naval patrol boats in international waters and forced to
proceed to a nearby island. proceed to a nearby island.
1976 1976
Lebanon. On July 22 and 23, 1974, helicopters from five U.S. naval vessels evacuated approximately On July 22 and 23, 1974, helicopters from five U.S. naval vessels evacuated approximately
250 Americans and Europeans from Lebanon during fighting between Lebanese factions after an 250 Americans and Europeans from Lebanon during fighting between Lebanese factions after an
overland convoy evacuation had been blocked by hostilities. overland convoy evacuation had been blocked by hostilities.
Korea. Additional forces were sent to Korea after two American soldiers were kil ed by North Additional forces were sent to Korea after two American soldiers were kil ed by North
Korean soldiers in the demilitarized zone between North and South Korea while cutting down a tree. Korean soldiers in the demilitarized zone between North and South Korea while cutting down a tree.
1978 1978
Zaire. From May 19 through June 1978, the United States From May 19 through June 1978, the United States ~~utilized~~used military transport aircraft to provide military transport aircraft to provide
logistical support to Belgian and French rescue operations in Zairelogistical support to Belgian and French rescue operations in Zaire (now the Democratic Republic of Congo, or DRC). .
1980 1980
Iran. On April 26, 1980, President On April 26, 1980, President Jimmy Carter reported the use of six U.S. transport planes and eight Carter reported the use of six U.S. transport planes and eight
helicopters in an unsuccessful attempt to rescue American hostages being held in Iran. helicopters in an unsuccessful attempt to rescue American hostages being held in Iran.
1981 1981
El Salvador. After a gueril a offensive against the government of El Salvador, additional U.S. military After a gueril a offensive against the government of El Salvador, additional U.S. military
advisers were sent to El Salvador, bringing the total to approximately 55, to assist in training advisers were sent to El Salvador, bringing the total to approximately 55, to assist in training
government forces in counterinsurgency. government forces in counterinsurgency.
Libya. On August 19, 1981, U.S. planes based on the carrier USS On August 19, 1981, U.S. planes based on the carrier USS Nimitz shot down two Libyan jets shot down two Libyan jets
over the Gulf of Sidra after one of the Libyan jets had fired a heat-seeking missile. The United States over the Gulf of Sidra after one of the Libyan jets had fired a heat-seeking missile. The United States
periodically held freedom of navigation exercises in the Gulf of Sidra, claimed by Libya as territorial periodically held freedom of navigation exercises in the Gulf of Sidra, claimed by Libya as territorial
waters but considered international waters by the United States. waters but considered international waters by the United States.
3 This and subsequent mentions of presidential reports or notifications refer to reports the President submitted to Congress related to the War Powers Resolution (P.L. 93-148, November 7, 1973). Background information on the discussion of the War Powers Resolution and various types of reports required under it was included in CRS Report R42699, The War Powers Resolution: Concepts and Practice, by Matthew C. Weed, and “The War Powers Resolution,” by Christine Sellers. Law Library Blog, Library of Congress, October 27, 2011, at https://blogs.loc.gov/law/2011/10/the-war-powers-resolution/. Congressional Research Service 12 Instances of Use of United States Armed Forces Abroad, 1798-2023 1982 Sinai, Egypt ~~1982~~
~~Sinai~~. On March 19, 1982, President On March 19, 1982, President Ronald Reagan reported the deployment of military personnel and Reagan reported the deployment of military personnel and
equipment to participate in the Multinational Force and Observers in the Sinai. Participation had been equipment to participate in the Multinational Force and Observers in the Sinai. Participation had been
authorized by the Multinational Force and Observers Resolution, P.L. 97-132. authorized by the Multinational Force and Observers Resolution, P.L. 97-132.
Lebanon. On August 21, 1982, President Reagan reported the dispatch of 800 marines to serve in the On August 21, 1982, President Reagan reported the dispatch of 800 marines to serve in the
multinational force to assist in the withdrawal of members of the Palestine Liberation force from multinational force to assist in the withdrawal of members of the Palestine Liberation force from
Beirut. The Beirut. The ~~Marines~~marines left September 20, 1982. left September 20, 1982.
1982-1983 1982-1983
Lebanon. On September 29, 1982, President Reagan reported the deployment of 1,200 marines to On September 29, 1982, President Reagan reported the deployment of 1,200 marines to
serve in a temporary multinational force to facilitate the restoration of Lebanese government serve in a temporary multinational force to facilitate the restoration of Lebanese government
sovereignty. On September 29, 1983, Congress passed the Multinational Force in Lebanon Resolution sovereignty. On September 29, 1983, Congress passed the Multinational Force in Lebanon Resolution
(P.L. 98-119) authorizing the continued participation for 18 months. (P.L. 98-119) authorizing the continued participation for 18 months.
1983 1983
Egypt. After a Libyan plane bombed a city in Sudan on March 18, 1983, and Sudan and Egypt appealed After a Libyan plane bombed a city in Sudan on March 18, 1983, and Sudan and Egypt appealed
for assistance, the United States dispatched an AWACS electronic surveillance plane to Egypt. for assistance, the United States dispatched an AWACS electronic surveillance plane to Egypt.
1983-1989 1983-1989
Honduras. In July 1983 the United States undertook a series of exercises in Honduras that some In July 1983 the United States undertook a series of exercises in Honduras that some
believed might lead to conflict with Nicaragua. On March 25, 1986, unarmed U.S. military helicopters believed might lead to conflict with Nicaragua. On March 25, 1986, unarmed U.S. military helicopters
and crewmen ferried Honduran troops to the Nicaraguan border to repel Nicaraguan troops. and crewmen ferried Honduran troops to the Nicaraguan border to repel Nicaraguan troops.

~~2 This and subsequent mentions of presidential reports or notifications refer to reports the President submitted to~~
~~Congress related to the War Powers Resolution (P.L. 93-148, November 7, 1973). Background information on the~~
~~discussion of the War Powers Resolution and various types of reports required under it was included in CRS Report~~
~~R42699, The War Powers Resolution: Concepts and Practice, by Matthew C. Weed, and “The War Powers~~
~~Resolution,” by Christine Sellers. Law Library Blog, Library of Congress, October 27, 2011, at~~
~~https://blogs.loc.gov/law/2011/10/the-war-powers-resolution/.~~
~~Congressional Research Service~~
12

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

1983 1983
Chad. On August 8, 1983, President Reagan reported the deployment of two AWACS electronic On August 8, 1983, President Reagan reported the deployment of two AWACS electronic
surveillance planes and eight F-15 fighter planes and ground logistical support forces to assist Chad surveillance planes and eight F-15 fighter planes and ground logistical support forces to assist Chad
against Libyan and rebel forces. against Libyan and rebel forces.
Grenada. On October 25, 1983, President Reagan reported a landing on Grenada by On October 25, 1983, President Reagan reported a landing on Grenada by ~~Marines~~marines and and
Army airborne troops to protect lives and assist in the restoration of law and order and at the Army airborne troops to protect lives and assist in the restoration of law and order and at the
request of five members of the Organization of Eastern Caribbean States. request of five members of the Organization of Eastern Caribbean States.
1984 1984
Persian Gulf. On June 5, 1984, Saudi Arabian jet fighter planes, aided by intelligence from a U.S. On June 5, 1984, Saudi Arabian jet fighter planes, aided by intelligence from a U.S.
AWACS electronic surveillance aircraft and fueled by a U.S. KC-10 tanker, shot down two Iranian AWACS electronic surveillance aircraft and fueled by a U.S. KC-10 tanker, shot down two Iranian
fighter planes over an area of the Persian Gulf proclaimed as a protected zone for shipping. fighter planes over an area of the Persian Gulf proclaimed as a protected zone for shipping.
1985 1985
Italy. On October 10, 1985, U.S. Navy pilots intercepted an Egyptian airliner and forced it to land in On October 10, 1985, U.S. Navy pilots intercepted an Egyptian airliner and forced it to land in
Sicily. The airliner was carrying the hijackers of the Italian cruise ship Sicily. The airliner was carrying the hijackers of the Italian cruise ship Achille Lauro, who had kil ed an who had kil ed an
American citizen during the hijacking. American citizen during the hijacking.
1986 1986
Libya. On March 26, 1986, President Reagan reported to Congress that, on March 24 and 25, U.S. On March 26, 1986, President Reagan reported to Congress that, on March 24 and 25, U.S.
forces, while engaged in freedom of navigation exercises around the Gulf of Sidra, had been attacked forces, while engaged in freedom of navigation exercises around the Gulf of Sidra, had been attacked
by Libyan missiles and the United States had responded with missiles. by Libyan missiles and the United States had responded with missiles.
Libya. On April 16, 1986, President Reagan reported that U.S. air and naval forces had conducted On April 16, 1986, President Reagan reported that U.S. air and naval forces had conducted
bombing strikes on terrorist facilities and military installations in Libya. bombing strikes on terrorist facilities and military installations in Libya.
Bolivia. U.S. Army personnel and aircraft assisted Bolivia in anti-drug operations. U.S. Army personnel and aircraft assisted Bolivia in anti-drug operations.
1987-1988 1987-1988
Persian Gulf. After the Iran-Iraq War resulted in several military incidents in the Persian Gulf, the After the Iran-Iraq War resulted in several military incidents in the Persian Gulf, the
United States increased U.S. joint military forces operations in the Persian Gulf and adopted a policy United States increased U.S. joint military forces operations in the Persian Gulf and adopted a policy
of reflagging and escorting Kuwaiti oil tankers through the Gulf. President Reagan reported that U.S. of reflagging and escorting Kuwaiti oil tankers through the Gulf. President Reagan reported that U.S.
Navy ships had been fired upon or struck mines or taken other military action on September 23, Navy ships had been fired upon or struck mines or taken other military action on September 23,
October 10, and October 20, 1987, and April 19, July 4, and July 14, 1988. The United States October 10, and October 20, 1987, and April 19, July 4, and July 14, 1988. The United States
gradually reduced its forces after a cease-fire between Iran and Iraq on August 20, 1988. gradually reduced its forces after a cease-fire between Iran and Iraq on August 20, 1988.
1988 1988
Panama. In mid-March and April 1988, during a period of instability in Panama and as pressure grew In mid-March and April 1988, during a period of instability in Panama and as pressure grew
for Panamanian military leader General Manuel Noriega to resign, the United States sent 1,000 troops for Panamanian military leader General Manuel Noriega to resign, the United States sent 1,000 troops
to Panama, to “further safeguard the canal, U.S. lives, property and interests in the area.” The forces to Panama, to “further safeguard the canal, U.S. lives, property and interests in the area.” The forces
supplemented 10,000 U.S. military personnel already in Panama. supplemented 10,000 U.S. military personnel already in Panama.
1989 1989
Libya. On January 4, 1989, two U.S. Navy F-14 aircraft based on the USS On January 4, 1989, two U.S. Navy F-14 aircraft based on the USS John F. Kennedy shot down shot down
two Libyan jet fighters over the Mediterranean Sea about 70 miles north of Libya. The U.S. pilots said two Libyan jet fighters over the Mediterranean Sea about 70 miles north of Libya. The U.S. pilots said
the Libyan planes had demonstrated hostile intentions. the Libyan planes had demonstrated hostile intentions.
Panama. On May 11, 1989, in response to General Noriega’s disregard of the results of the On May 11, 1989, in response to General Noriega’s disregard of the results of the
Panamanian election, President George H.W. Bush ordered a brigade-sized force of approximately Panamanian election, President George H.W. Bush ordered a brigade-sized force of approximately
1,900 troops to augment the estimated 11,000 U.S. forces already in the area. 1,900 troops to augment the estimated 11,000 U.S. forces already in the area.
Andean Initiative in War on Drugs. On September 15, 1989, President On September 15, 1989, President George H.W. Bush announced that military and Bush announced that military and
law enforcement assistance would be sent to help the Andean nations of Colombia, law enforcement assistance would be sent to help the Andean nations of Colombia, Congressional Research Service 13 Instances of Use of United States Armed Forces Abroad, 1798-2023 Bolivia, and Peru Bolivia, and Peru
combat il icit drug producers and traffickers. By mid-September there were 50-100 U.S. military combat il icit drug producers and traffickers. By mid-September there were 50-100 U.S. military
advisers in Colombia in connection with transport and training in the use of military equipment, plus advisers in Colombia in connection with transport and training in the use of military equipment, plus
seven Special Forces teams of 2-12 persons to train troops in the three countries. seven Special Forces teams of 2-12 persons to train troops in the three countries.
Philippines. On December 2, 1989, President On December 2, 1989, President George H.W. Bush reported that on December 1Bush reported that on December 1, U.S. fighter planes U.S. fighter planes
from Clark Air Base in the Philippines had assisted the Aquino government to repel a coup attempt. from Clark Air Base in the Philippines had assisted the Aquino government to repel a coup attempt.
In addition, 100 marines were sent from the U.S. Navy base at Subic Bay to protect the U.S. embassy In addition, 100 marines were sent from the U.S. Navy base at Subic Bay to protect the U.S. embassy
in Manila. in Manila.
1989-1990 1989-1990
Panama. On December 21, 1989, President George H.W. Bush reported that he had ordered U.S. On December 21, 1989, President George H.W. Bush reported that he had ordered U.S.
military forces to Panama to protect the lives of American citizens and bring General Noriega to military forces to Panama to protect the lives of American citizens and bring General Noriega to
justice. By February 13, 1990, all the invasion forces had been withdrawn. justice. By February 13, 1990, all the invasion forces had been withdrawn.
1990 1990
Liberia. On August 6, 1990, President George H.W. Bush reported that a reinforced rifle company On August 6, 1990, President George H.W. Bush reported that a reinforced rifle company
had been sent to provide additional security to the U.S. embassy in Monrovia, and that helicopter had been sent to provide additional security to the U.S. embassy in Monrovia, and that helicopter
teams had evacuated U.S. citizens from Liberia. teams had evacuated U.S. citizens from Liberia.
Saudi Arabia. On August 9, 1990, President On August 9, 1990, President George H.W. Bush reported that he had ordered the forward Bush reported that he had ordered the forward
deployment of substantial elements of the U.S. Armed Forces into the Persian Gulf region to deployment of substantial elements of the U.S. Armed Forces into the Persian Gulf region to help ~~help~~
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

defend Saudi Arabia after the August 2 invasion of Kuwait by Iraq. On November 16, 1990, he defend Saudi Arabia after the August 2 invasion of Kuwait by Iraq. On November 16, 1990, he
reported the continued buildup of the forces to ensure an adequate offensive military option. reported the continued buildup of the forces to ensure an adequate offensive military option.
1991 1991
Iraq. On January 18, 1991, President George H.W. Bush reported that he had directed U.S. Armed On January 18, 1991, President George H.W. Bush reported that he had directed U.S. Armed
Forces to commence combat operations on January 16 against Iraqi forces and military targets in Iraq Forces to commence combat operations on January 16 against Iraqi forces and military targets in Iraq
and Kuwait, in conjunction with a coalition of allies and U.N. Security Council resolutions. On January and Kuwait, in conjunction with a coalition of allies and U.N. Security Council resolutions. On January
12, Congress had passed the Authorization for Use of Military Force against Iraq Resolution (P.L. 102-12, Congress had passed the Authorization for Use of Military Force against Iraq Resolution (P.L. 102-
1). Combat operations were suspended on February 28, 1991. 1). Combat operations were suspended on February 28, 1991.
Iraq. On May 17, 1991, President On May 17, 1991, President George H.W. Bush stated in a status report to Congress that the Iraqi repression Bush stated in a status report to Congress that the Iraqi repression
of the Kurdish people had necessitated a limited introduction of U.S. forces into northern Iraq for of the Kurdish people had necessitated a limited introduction of U.S. forces into northern Iraq for
emergency relief purposes. emergency relief purposes.
Zaire (now DRC). On September 25-27, 1991, after widespread looting and rioting broke out in Kinshasa, U.S. Air . On September 25-27, 1991, after widespread looting and rioting broke out in Kinshasa, U.S. Air
Force C-141s transported 100 Belgian troops and equipment into Kinshasa. U.S. planes also carried Force C-141s transported 100 Belgian troops and equipment into Kinshasa. U.S. planes also carried
300 French troops into the Central African Republic and 300 French troops into the Central African Republic and ~~hauled~~brought back American citizens and third back American citizens and third
country nationals from locations outside Zairecountry nationals from locations outside Zaire (DRC). .
1992 1992
Sierra Leone. On May 3, 1992, U.S. military planes evacuated Americans from Sierra Leone, where On May 3, 1992, U.S. military planes evacuated Americans from Sierra Leone, where
military leaders had overthrown the government. military leaders had overthrown the government.
Kuwait. On August 3, 1992, the United States began a series of military exercises in Kuwait, fol owing On August 3, 1992, the United States began a series of military exercises in Kuwait, fol owing
Iraqi refusal to recognize a new border drawn up by the United Nations and refusal to cooperate Iraqi refusal to recognize a new border drawn up by the United Nations and refusal to cooperate
with U.N. inspection teams. with U.N. inspection teams.
Iraq. On September 16, 1992, President George H.W. Bush stated in a status report to Congress that On September 16, 1992, President George H.W. Bush stated in a status report to Congress that
he had ordered U.S. participation in the enforcement of a prohibition against Iraqi flights in a specified he had ordered U.S. participation in the enforcement of a prohibition against Iraqi flights in a specified
zone in southern Iraq, and aerial reconnaissance to monitor Iraqi compliance with the cease-fire zone in southern Iraq, and aerial reconnaissance to monitor Iraqi compliance with the cease-fire
resolution. resolution.
Somalia. On December 10, 1992, President On December 10, 1992, President George H.W. Bush reported that he had deployed U.S. Armed Forces Bush reported that he had deployed U.S. Armed Forces
to Somalia in response to a humanitarian crisis and a U.N. Security Council Resolution determining to Somalia in response to a humanitarian crisis and a U.N. Security Council Resolution determining
that the situation constituted a threat to international peace. This operation, called Operation that the situation constituted a threat to international peace. This operation, called Operation
Restore Hope, was part of a U.S.-led United Nations Unified Task Force (UNITAF) and came to an Restore Hope, was part of a U.S.-led United Nations Unified Task Force (UNITAF) and came to an
end on May 4, 1993. U.S. forces continued to participate in the successor United Nations Operation end on May 4, 1993. U.S. forces continued to participate in the successor United Nations Operation
in Somalia (UNOSOM II), which the U.N. Security Council authorized to assist Somalia in political in Somalia (UNOSOM II), which the U.N. Security Council authorized to assist Somalia in political
reconciliation and restoration of peace. reconciliation and restoration of peace.
1993 1993
Iraq. On January 19, 1993, President George H.W. Bush said in a status report that on December 27, On January 19, 1993, President George H.W. Bush said in a status report that on December 27,
1992, U.S. aircraft had shot down an Iraqi aircraft in the prohibited zone; on January 13 aircraft from 1992, U.S. aircraft had shot down an Iraqi aircraft in the prohibited zone; on January 13 aircraft from
the United States and coalition partners had attacked missile bases in southern Iraq; and further the United States and coalition partners had attacked missile bases in southern Iraq; and further
military actions had occurred on January 17 and 18. Administration officials said the United States was military actions had occurred on January 17 and 18. Administration officials said the United States was
deploying a battalion task force to Kuwait to underline the continuing U.S. commitment to Kuwaiti deploying a battalion task force to Kuwait to underline the continuing U.S. commitment to Kuwaiti
independence. independence.
Iraq. On January 21, 1993, shortly after his inauguration, President On January 21, 1993, shortly after his inauguration, President Bil Clinton said the United States Clinton said the United States
would continue the Bush policy on Iraq, and U.S. aircraft fired at targets in Iraq after pilots sensed would continue the Bush policy on Iraq, and U.S. aircraft fired at targets in Iraq after pilots sensed
Iraqi radar or anti-aircraft fire directed at them. Iraqi radar or anti-aircraft fire directed at them.
Congressional Research Service 14 Instances of Use of United States Armed Forces Abroad, 1798-2023 Bosnia. On February 28, 1993, the United States began an airdrop of relief supplies aimed at Muslims On February 28, 1993, the United States began an airdrop of relief supplies aimed at Muslims
surrounded by Serbian forces in Bosnia. surrounded by Serbian forces in Bosnia.
Bosnia. On April 13, 1993, President On April 13, 1993, President Bil Clinton reported U.S. forces were participating in a North Clinton reported U.S. forces were participating in a North
Atlantic Treaty Organization (NATO) air action to enforce a U.N. ban on all unauthorized military Atlantic Treaty Organization (NATO) air action to enforce a U.N. ban on all unauthorized military
flights over Bosnia-Herzegovina. flights over Bosnia-Herzegovina.
Iraq. In a status report on Iraq of May 24, President Clinton said that on April 9 and April 18 U.S. In a status report on Iraq of May 24, President Clinton said that on April 9 and April 18 U.S.
planes had bombed or fired missiles at Iraqi anti-aircraft sites that had tracked U.S. aircraft. planes had bombed or fired missiles at Iraqi anti-aircraft sites that had tracked U.S. aircraft.
Somalia. On June 10, 1993, President Clinton reported that in response to attacks against U.N. forces On June 10, 1993, President Clinton reported that in response to attacks against U.N. forces
in Somalia by a factional leader, the U.S. Quick Reaction Force in the area had participated in military in Somalia by a factional leader, the U.S. Quick Reaction Force in the area had participated in military
action to quell the violence. On July 1action to quell the violence. On July 1, President Clinton reported further air and ground military President Clinton reported further air and ground military
operations on June 12 and June 17operations on June 12 and June 17, aimed at neutralizing military capabilities that had impeded U.N. aimed at neutralizing military capabilities that had impeded U.N.
efforts to deliver humanitarian relief and promote national reconstruction, and additional instances efforts to deliver humanitarian relief and promote national reconstruction, and additional instances
occurred in the fol owing months. occurred in the fol owing months.
Iraq. On June 28, 1993, President Clinton reported that on June 26 On June 28, 1993, President Clinton reported that on June 26, U.S. naval forces had launched U.S. naval forces had launched
missiles against the Iraqi Intelligence Service’s headquarters in Baghdad in response to an unsuccessful missiles against the Iraqi Intelligence Service’s headquarters in Baghdad in response to an unsuccessful
attempt to assassinate former President attempt to assassinate former President George H.W. Bush in Kuwait in April 1993. Bush in Kuwait in April 1993.
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Iraq. In a status report of July 22, 1993, President Clinton said on June 19 In a status report of July 22, 1993, President Clinton said on June 19, a U.S. aircraft had fired a a U.S. aircraft had fired a
missile at an Iraqi anti-aircraft site displaying hostile intent. U.S. planes also bombed an Iraqi missile missile at an Iraqi anti-aircraft site displaying hostile intent. U.S. planes also bombed an Iraqi missile
battery on August 19, 1993. battery on August 19, 1993.
Former Yugoslav Republic of Macedonia. On July 9, 1993, President Clinton reported the deployment of 350 U.S. soldiers to the On July 9, 1993, President Clinton reported the deployment of 350 U.S. soldiers to the
~~former~~Former Yugoslav Republic of Macedonia Yugoslav Republic of Macedonia (FYROM) to participate in the U.N. Protection Force to help maintain to participate in the U.N. Protection Force to help maintain
stability in the area of former Yugoslavia.stability in the area of former Yugoslavia.4
Haiti. On October 20, 1993, President Clinton reported that U.S. ships had begun to enforce a U.N. On October 20, 1993, President Clinton reported that U.S. ships had begun to enforce a U.N.
embargo against Haiti. embargo against Haiti.
1994 1994
Bosnia. On February 17, 1994, President Clinton reported that the United States had expanded its On February 17, 1994, President Clinton reported that the United States had expanded its
participation in United Nations and NATO efforts to reach a peaceful solution to the conflict in participation in United Nations and NATO efforts to reach a peaceful solution to the conflict in
former Yugoslavia and that 60 U.S. aircraft were available for participation in the authorized NATO former Yugoslavia and that 60 U.S. aircraft were available for participation in the authorized NATO
missions. missions.
Bosnia. On March 1, 1994, President Clinton reported that on February 28 On March 1, 1994, President Clinton reported that on February 28, U.S. planes patrol ing the U.S. planes patrol ing the
“no-fly zone” in former Yugoslavia under NATO shot down four Serbian Galeb planes. “no-fly zone” in former Yugoslavia under NATO shot down four Serbian Galeb planes.
Bosnia. On April 12, 1994, President Clinton reported that on April 10 and 11, U.S. warplanes under On April 12, 1994, President Clinton reported that on April 10 and 11, U.S. warplanes under
NATO command had fired against Bosnian Serb forces shelling the “safe” city of Gorazde. NATO command had fired against Bosnian Serb forces shelling the “safe” city of Gorazde.
Rwanda. On April 12, 1994, President Clinton reported that combat-equipped U.S. military forces had On April 12, 1994, President Clinton reported that combat-equipped U.S. military forces had
been deployed to Burundi to conduct possible non-combatant evacuation operations of U.S. citizens been deployed to Burundi to conduct possible non-combatant evacuation operations of U.S. citizens
and other third-country nationals from Rwanda, where widespread fighting had broken out. By and other third-country nationals from Rwanda, where widespread fighting had broken out. By
September 30, 1994, all U.S. troops had departed from Rwanda and surrounding nations. In the September 30, 1994, all U.S. troops had departed from Rwanda and surrounding nations. In the
Defense Appropriations Act for FY1995 (P.L. 103-335, signed September 30, 1994), Congress barred Defense Appropriations Act for FY1995 (P.L. 103-335, signed September 30, 1994), Congress barred
use of funds for U.S. military participation in or around Rwanda after October 7, 1994, except for any use of funds for U.S. military participation in or around Rwanda after October 7, 1994, except for any
action necessary to protect U.S. citizens. action necessary to protect U.S. citizens.
~~Macedonia~~FYROM. On April 19, 1994, President Clinton reported that the U.S. contingent in the On April 19, 1994, President Clinton reported that the U.S. contingent in the ~~former~~Former
Yugoslav Republic of Macedonia Yugoslav Republic of Macedonia (FYROM) had been augmented by a reinforced company of 200 personnel. had been augmented by a reinforced company of 200 personnel.
Haiti. On April 20, 1994, President Clinton reported that U.S. naval forces had continued On April 20, 1994, President Clinton reported that U.S. naval forces had continued
enforcement of the U.N. embargo in the waters around Haiti and that 712 vessels had been boarded enforcement of the U.N. embargo in the waters around Haiti and that 712 vessels had been boarded
since October 20, 1993. since October 20, 1993.
Bosnia. On August 22, 1994, President Clinton reported the use on August 5 On August 22, 1994, President Clinton reported the use on August 5, of U.S. aircraft under of U.S. aircraft under
NATO to attack Bosnian Serb heavy weapons in the Sarajevo heavy weapons exclusion zone upon NATO to attack Bosnian Serb heavy weapons in the Sarajevo heavy weapons exclusion zone upon
request of the U.N. Protection Forces. request of the U.N. Protection Forces.
Haiti. On September 21, 1994, President Clinton reported the deployment of 1,500 troops to Haiti to On September 21, 1994, President Clinton reported the deployment of 1,500 troops to Haiti to
restore democracyrestore democracy ~~in Haiti. The troop level was subsequently increased to 20,000.~~
. The troop level was subsequently increased to 20,000. 4 Following the breakup of Yugoslavia, Macedonia achieved independence in 1991. However, due to a dispute with Greece over the name “Macedonia,” the country was initially recognized and admitted to the United Nations in 1993 as the “Former Yugoslav Republic of Macedonia.” In February 2019, following an agreement with Greece, Macedonia's name changed to the Republic of North Macedonia. Congressional Research Service 15 Instances of Use of United States Armed Forces Abroad, 1798-2023 Bosnia. On November 22, 1994, President Clinton reported the use of U.S. combat aircraft on On November 22, 1994, President Clinton reported the use of U.S. combat aircraft on
November 21, 1994, under NATO, to attack bases used by Serbs to attack the town of BihacNovember 21, 1994, under NATO, to attack bases used by Serbs to attack the town of Bihac, in
Bosnia. Bosnia.
~~Macedonia~~FYROM. On December 22, 1994, President Clinton reported that the U.S. Army contingent in the On December 22, 1994, President Clinton reported that the U.S. Army contingent in the
~~former~~Former Yugoslav Republic of Macedonia Yugoslav Republic of Macedonia (FYROM) continued its peacekeeping mission and that the current continued its peacekeeping mission and that the current
contingent would soon be replaced by about 500 soldiers from the 3rd Battalion, 5th Cavalry contingent would soon be replaced by about 500 soldiers from the 3rd Battalion, 5th Cavalry
Regiment, and 1st Armored Division from Kirchgoens, Germany. Regiment, and 1st Armored Division from Kirchgoens, Germany.
1995 1995
Somalia. On March 1, 1995, President Clinton reported that on February 27, 1995, 1,800 combat- On March 1, 1995, President Clinton reported that on February 27, 1995, 1,800 combat-
equipped U.S. Armed Forces personnel began deployment into Mogadishu, Somalia, to assist in the equipped U.S. Armed Forces personnel began deployment into Mogadishu, Somalia, to assist in the
withdrawal of U.N. forces assigned there to the United Nations Operation in Somalia (UNOSOM II). withdrawal of U.N. forces assigned there to the United Nations Operation in Somalia (UNOSOM II).
This mission was completed on March 3, 1995. This mission was completed on March 3, 1995.
Haiti. On March 21, 1995, President Clinton reported that U.S. military forces in Haiti as part of a On March 21, 1995, President Clinton reported that U.S. military forces in Haiti as part of a
U.N. Multinational Force had been reduced to just fewer than 5,300 personnel. He noted that as of U.N. Multinational Force had been reduced to just fewer than 5,300 personnel. He noted that as of
March 31, 1995, approximately 2,500 U.S. personnel would remain in Haiti as part of the U.N. March 31, 1995, approximately 2,500 U.S. personnel would remain in Haiti as part of the U.N.
Mission in Haiti (UNMIH). Mission in Haiti (UNMIH).
Bosnia. On May 24, 1995, President Clinton reported that U.S. combat-equipped fighter aircraft and On May 24, 1995, President Clinton reported that U.S. combat-equipped fighter aircraft and
other aircraft continued to contribute to NATO’s enforcement of the no-fly zone in airspace over other aircraft continued to contribute to NATO’s enforcement of the no-fly zone in airspace over
Bosnia-Herzegovina. U.S. aircraft, he noted, were also available for close air support of U.N. forces in Bosnia-Herzegovina. U.S. aircraft, he noted, were also available for close air support of U.N. forces in
Croatia. Roughly 500 U.S. soldiers continued to be deployed in the Croatia. Roughly 500 U.S. soldiers continued to be deployed in the ~~former~~Former Yugoslav Republic of Yugoslav Republic of
Macedonia Macedonia (FYROM) as part of the U.N. Preventive Deployment Force (UNPREDEP). U.S. forces continued to as part of the U.N. Preventive Deployment Force (UNPREDEP). U.S. forces continued to
support U.N. refugee and embargo operations in this region. support U.N. refugee and embargo operations in this region.
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Bosnia. On September 1, 1995, President Clinton reported that “U.S. combat and support aircraft” On September 1, 1995, President Clinton reported that “U.S. combat and support aircraft”
had been used beginning on August 29, 1995, in a series of NATO air strikes against Bosnian Serb had been used beginning on August 29, 1995, in a series of NATO air strikes against Bosnian Serb
Army (BSA) forces in Bosnia-Herzegovina that were threatening the U.N.-declared safe areas of Army (BSA) forces in Bosnia-Herzegovina that were threatening the U.N.-declared safe areas of
Sarajevo, Tuzla, and Gorazde. He noted that during the first day of operations, “some 300 sorties Sarajevo, Tuzla, and Gorazde. He noted that during the first day of operations, “some 300 sorties
were flown against 23 targets in the vicinity of Sarajevo, Tuzla, Gorazde and Mostar.” were flown against 23 targets in the vicinity of Sarajevo, Tuzla, Gorazde and Mostar.”
Haiti. On September 21, 1995, President Clinton reported that currently the United States had 2,400 On September 21, 1995, President Clinton reported that currently the United States had 2,400
military personnel in Haiti as participants in UNMIH. In addition, 260 U.S. military personnel were military personnel in Haiti as participants in UNMIH. In addition, 260 U.S. military personnel were
assigned to the U.S. Support Group Haiti. assigned to the U.S. Support Group Haiti.
Bosnia. On December 6, 1995, President Clinton reported to Congress that he had “ordered the On December 6, 1995, President Clinton reported to Congress that he had “ordered the
deployment of approximately 1,500 U.S. military personnel” to Bosnia-Herzegovina and Croatia as deployment of approximately 1,500 U.S. military personnel” to Bosnia-Herzegovina and Croatia as
part of a NATO “enabling force” to lay the groundwork for the prompt and safe deployment of the part of a NATO “enabling force” to lay the groundwork for the prompt and safe deployment of the
NATO-led Implementation Force (IFOR),” which would be used to implement the Bosnian peace NATO-led Implementation Force (IFOR),” which would be used to implement the Bosnian peace
agreement after its signing. The President also noted that he had authorized deployment of roughly agreement after its signing. The President also noted that he had authorized deployment of roughly
3,000 other U.S. military personnel to Hungary, Italy, and Croatia to establish infrastructure for the 3,000 other U.S. military personnel to Hungary, Italy, and Croatia to establish infrastructure for the
enabling force and the IFOR. enabling force and the IFOR.
Bosnia. On December 21, 1995, President Clinton reported to Congress that he had ordered the On December 21, 1995, President Clinton reported to Congress that he had ordered the
deployment of approximately 20,000 U.S. military personnel to participate in IFOR in the Republic of deployment of approximately 20,000 U.S. military personnel to participate in IFOR in the Republic of
Bosnia-Herzegovina, and approximately 5,000 U.S. military personnel would be deployed in other Bosnia-Herzegovina, and approximately 5,000 U.S. military personnel would be deployed in other
former Yugoslav states, primarily in Croatia. In addition, about 7,000 U.S. support forces would be former Yugoslav states, primarily in Croatia. In addition, about 7,000 U.S. support forces would be
deployed to Hungary, Italy, and Croatia and other regional states in support of IFOR’s mission. deployed to Hungary, Italy, and Croatia and other regional states in support of IFOR’s mission.
1996 1996
Haiti. On March 21, 1996, President Clinton reported to Congress that beginning in January 1996. On March 21, 1996, President Clinton reported to Congress that beginning in January 1996,
there had been a “phased reduction” in the number of United States personnel assigned to UNMIH. there had been a “phased reduction” in the number of United States personnel assigned to UNMIH.
As of March 21, 309 U.S. personnel remained a part of UNMIHAs of March 21, 309 U.S. personnel remained a part of UNMIH~~. These U.S. forces~~ and were “equipped were “equipped
for combat.” for combat.”
Liberia. On April 11, 1996, President Clinton reported to Congress that on April 9, 1996, due to the On April 11, 1996, President Clinton reported to Congress that on April 9, 1996, due to the
“deterioration of the security situation and the resulting threat to American citizens” in Liberia he “deterioration of the security situation and the resulting threat to American citizens” in Liberia he
had ordered U.S. military forces to evacuate from that country “private U.S. citizens and certain had ordered U.S. military forces to evacuate from that country “private U.S. citizens and certain
third-country nationals who had taken refuge in the U.S. Embassy compound.” third-country nationals who had taken refuge in the U.S. Embassy compound.”
Liberia. On May 20, 1996, President Clinton reported to Congress the continued deployment of U.S. On May 20, 1996, President Clinton reported to Congress the continued deployment of U.S.
military forces in Liberia to evacuate both American citizens and other foreign personnel, and to military forces in Liberia to evacuate both American citizens and other foreign personnel, and to
respond to various isolated “attacks on the American Embassy complex” in Liberia. The President respond to various isolated “attacks on the American Embassy complex” in Liberia. The President
noted that the deployment of U.S. forces would continue until there was no longer any need for noted that the deployment of U.S. forces would continue until there was no longer any need for
enhanced security at the embassy and a requirement to maintain an evacuation capability in the enhanced security at the embassy and a requirement to maintain an evacuation capability in the
country. country.
Central African Republic. On May 23, 1996, President Clinton reported to Congress the deployment of On May 23, 1996, President Clinton reported to Congress the deployment of
U.S. military personnel to Bangui, Central African Republic, to conduct the evacuation from that U.S. military personnel to Bangui, Central African Republic, to conduct the evacuation from that
Congressional Research Service 16 Instances of Use of United States Armed Forces Abroad, 1798-2023 country of “private U.S. citizens and certain U.S. Government employees,” and to provide “enhanced country of “private U.S. citizens and certain U.S. Government employees,” and to provide “enhanced
security for the American Embassy in Bangui.” security for the American Embassy in Bangui.”
Bosnia. On June 21, 1996, President Clinton reported to Congress that United States forces totaling . On June 21, 1996, President Clinton reported to Congress that United States forces totaling
about 17,000 remain deployed in Bosnia “under NATO operational command and control” as part of about 17,000 remain deployed in Bosnia “under NATO operational command and control” as part of
the NATO Implementation Force (IFOR). In addition, about 5,500 U.S. military personnel were the NATO Implementation Force (IFOR). In addition, about 5,500 U.S. military personnel were
deployed in Hungary, Italy, and Croatia, and other regional states to provide “logistical and other deployed in Hungary, Italy, and Croatia, and other regional states to provide “logistical and other
support to IFOR.” support to IFOR.” ~~The~~ President President Clinton noted that it was the intention that IFOR would complete the noted that it was the intention that IFOR would complete the
withdrawal of all troops in the weeks after December 20, 1996, on a schedule “set by NATO withdrawal of all troops in the weeks after December 20, 1996, on a schedule “set by NATO
commanders consistent with the safety of troops and the logistical requirements for an orderly commanders consistent with the safety of troops and the logistical requirements for an orderly
withdrawal.” He also noted that a U.S. Army contingent (of about 500 U.S. soldiers) remained in the withdrawal.” He also noted that a U.S. Army contingent (of about 500 U.S. soldiers) remained in the
Former Yugoslav Republic of Macedonia Former Yugoslav Republic of Macedonia (FYROM) as part of the United Nations Preventive Deployment Force as part of the United Nations Preventive Deployment Force
(UNPREDEP). (UNPREDEP).
Rwanda and Zaire (now DRC). On December 2, 1996, President Clinton reported to Congress that to support On December 2, 1996, President Clinton reported to Congress that to support
the humanitarian efforts of the United Nations regarding refugees in Rwanda and the Great Lakes the humanitarian efforts of the United Nations regarding refugees in Rwanda and the Great Lakes
Region of Eastern Zaire, he had authorized the use of U.S. personnel and aircraft, including AC-130U Region of Eastern Zaire, he had authorized the use of U.S. personnel and aircraft, including AC-130U
planes to help in surveying the region in support of humanitarian operations, although fighting stil was planes to help in surveying the region in support of humanitarian operations, although fighting stil was
occurring in the area, and U.S. aircraft had been subject to fire when on flight duty. occurring in the area, and U.S. aircraft had been subject to fire when on flight duty.
Bosnia. On December 20, 1996, President Clinton reported to Congress that he had authorized U.S. On December 20, 1996, President Clinton reported to Congress that he had authorized U.S.
participation in an IFOR follow-on force in Bosnia, known as SFOR (Stabilization Force), under participation in an IFOR follow-on force in Bosnia, known as SFOR (Stabilization Force), under
NATO command. The President said the U.S. forces contribution to SFOR was to be “about 8,500” NATO command. The President said the U.S. forces contribution to SFOR was to be “about 8,500”
personnel whose primary mission personnel whose primary mission iswas to deter or prevent a resumption of hostilities or new threats to deter or prevent a resumption of hostilities or new threats to to
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peace in Bosnia. SFOR’s duration in Bosnia was expected to be 18 months, with progressive peace in Bosnia. SFOR’s duration in Bosnia was expected to be 18 months, with progressive
reductions and eventual withdrawal. reductions and eventual withdrawal.
1997 1997
Albania. On March 15, 1997, President Clinton reported to Congress that on March 13, 1997, he had On March 15, 1997, President Clinton reported to Congress that on March 13, 1997, he had
utilized U.S. military forces to evacuate certain U.S. government employees and private U.S. citizens utilized U.S. military forces to evacuate certain U.S. government employees and private U.S. citizens
from Tirana, Albania, and to enhance security for the U.S. embassy in that city. from Tirana, Albania, and to enhance security for the U.S. embassy in that city.
Congo and Gabon. On March 27, 1997, President Clinton reported to Congress that, on March 25, On March 27, 1997, President Clinton reported to Congress that, on March 25,
1997, a standby evacuation force of U.S. military personnel had been deployed to Congo and Gabon 1997, a standby evacuation force of U.S. military personnel had been deployed to Congo and Gabon
to provide enhanced security for American private citizens, government employees, and selected to provide enhanced security for American private citizens, government employees, and selected
third country nationals in Zaire, and to be available for any necessary evacuation operation. third country nationals in Zaire, and to be available for any necessary evacuation operation.
Sierra Leone. On May 30, 1997, President Clinton reported to Congress that on May 29 and May 30, On May 30, 1997, President Clinton reported to Congress that on May 29 and May 30,
1997, U.S. military personnel were deployed to Freetown, Sierra Leone, to prepare for and undertake 1997, U.S. military personnel were deployed to Freetown, Sierra Leone, to prepare for and undertake
the evacuation of certain U.S. government employees and private U.S. citizens. the evacuation of certain U.S. government employees and private U.S. citizens.
Bosnia. On June 20, 1997, President Clinton reported to Congress that U.S. Armed Forces continued On June 20, 1997, President Clinton reported to Congress that U.S. Armed Forces continued
to support peacekeeping operations in Bosnia and other states in the region in support of the NATO-to support peacekeeping operations in Bosnia and other states in the region in support of the NATO-
led Stabilization Force (SFOR). He reported that currently most U.S. military personnel involved in led Stabilization Force (SFOR). He reported that currently most U.S. military personnel involved in
SFOR were in Bosnia, near Tuzla, and about 2,800 U.S. troops were deployed in Hungary, Croatia, SFOR were in Bosnia, near Tuzla, and about 2,800 U.S. troops were deployed in Hungary, Croatia,
Italy, and other regional states to provide logistics and other support to SFOR. A U.S. Army Italy, and other regional states to provide logistics and other support to SFOR. A U.S. Army
contingent of about 500 also remained in the contingent of about 500 also remained in the ~~Former Yugoslav Republic of Macedonia~~FYROM as part of the as part of the
UNPREDEP. UNPREDEP.
Cambodia. On July 11, 1997, President Clinton reported to Congress that in an effort to ensure the On July 11, 1997, President Clinton reported to Congress that in an effort to ensure the
security of American citizens in Cambodia during a period of domestic conflict there, he had deployed security of American citizens in Cambodia during a period of domestic conflict there, he had deployed
a a ~~Task Force~~task force of about 550 U.S. military personnel to U-Tapao Air Base in Thailand. These personnel of about 550 U.S. military personnel to U-Tapao Air Base in Thailand. These personnel
were to be available for possible emergency evacuation operations in Cambodia as deemed necessary. were to be available for possible emergency evacuation operations in Cambodia as deemed necessary.
Bosnia. On December 19, 1997, President Clinton reported to Congress that he intended “in On December 19, 1997, President Clinton reported to Congress that he intended “in
principle” to have the United States participate in a security presence in Bosnia when the NATO principle” to have the United States participate in a security presence in Bosnia when the NATO
SFOR contingent withdrew in the summer of 1998. SFOR contingent withdrew in the summer of 1998.
1998 1998
Guinea-Bissau. On June 12, 1998, President Clinton reported to Congress that, on June 10, 1998, in On June 12, 1998, President Clinton reported to Congress that, on June 10, 1998, in
response to an army mutiny in Guinea-Bissau endangering the U.S. embassy, U.S. government response to an army mutiny in Guinea-Bissau endangering the U.S. embassy, U.S. government
employees, and U.S. citizens in that country, he had deployed a standby evacuation force of U.S. employees, and U.S. citizens in that country, he had deployed a standby evacuation force of U.S.
military personnel to Dakar, Senegal, to remove such individuals, as well as selected third country military personnel to Dakar, Senegal, to remove such individuals, as well as selected third country
nationals, from the city of Bissau. The deployment continued until the necessary evacuations were nationals, from the city of Bissau. The deployment continued until the necessary evacuations were
completed. completed.
Bosnia. On June 19, 1998, President Clinton reported to Congress regarding activities in the last six On June 19, 1998, President Clinton reported to Congress regarding activities in the last six
months of combat-equipped U.S. forces in support of NATO’s SFOR in Bosnia and surrounding areas months of combat-equipped U.S. forces in support of NATO’s SFOR in Bosnia and surrounding areas
of former Yugoslavia. of former Yugoslavia.
Congressional Research Service 17 Instances of Use of United States Armed Forces Abroad, 1798-2023 Kenya and Tanzania. On August 10, 1998, President Clinton reported to Congress that he had On August 10, 1998, President Clinton reported to Congress that he had
deployed, on August 7, 1998, deployed, on August 7, 1998, a Joint Task Force of U.S. military personnel to Nairobi, Kenya, to Joint Task Force of U.S. military personnel to Nairobi, Kenya, to
coordinate the medical and disaster assistance related to the bombings of the U.S. Embassies in Kenya coordinate the medical and disaster assistance related to the bombings of the U.S. Embassies in Kenya
and Tanzania. He also reported that teams of 50-100 security personnel had arrived in Nairobi, and Tanzania. He also reported that teams of 50-100 security personnel had arrived in Nairobi,
Kenya, and Dar es Salaam, Tanzania, to enhance the security of the U.S. Kenya, and Dar es Salaam, Tanzania, to enhance the security of the U.S. ~~Embassies~~embassies and citizens there. and citizens there.
Albania. On August 18, 1998, President Clinton reported to Congress that he had, on August 16, On August 18, 1998, President Clinton reported to Congress that he had, on August 16,
1998, deployed 200 U.S. 1998, deployed 200 U.S. ~~Marines~~marines and 10 Navy SEALS to the U.S. embassy compound in Tirana, and 10 Navy SEALS to the U.S. embassy compound in Tirana,
Albania, to enhance security against reported threats against U.S. personnel. Albania, to enhance security against reported threats against U.S. personnel.
Afghanistan and Sudan. On August 21, 1998, by letter, President Clinton reported to Congress that he On August 21, 1998, by letter, President Clinton reported to Congress that he
had authorized airstrikes on August 20 against camps and installations in Afghanistan and Sudan used had authorized airstrikes on August 20 against camps and installations in Afghanistan and Sudan used
by the Osama bin Laden terrorist organization. The President did so based on what he viewed as by the Osama bin Laden terrorist organization. The President did so based on what he viewed as
convincing information that the bin Laden organization was responsible for the bombings, on August convincing information that the bin Laden organization was responsible for the bombings, on August
7, 1998, of the U.S. Embassies in Kenya and Tanzania. 7, 1998, of the U.S. Embassies in Kenya and Tanzania.
Liberia. On September 29, 1998, President Clinton reported to Congress that on September 27, 1998, On September 29, 1998, President Clinton reported to Congress that on September 27, 1998,
he had, due to political instability and civil disorder in Liberia, deployed a stand-by response and he had, due to political instability and civil disorder in Liberia, deployed a stand-by response and
evacuation force of 30 U.S. military personnel to augment the security force at the U.S. embassy in evacuation force of 30 U.S. military personnel to augment the security force at the U.S. embassy in
Monrovia, and to provide for a rapid evacuation capability, as needed, to remove U.S. citizens and Monrovia, and to provide for a rapid evacuation capability, as needed, to remove U.S. citizens and
government personnel from the country. government personnel from the country.
Iraq. During the period from December 16-23, 1998, the United States, together with the United During the period from December 16-23, 1998, the United States, together with the United
Kingdom, conducted a bombing campaign, termed Operation Desert Fox, against Iraqi industrial Kingdom, conducted a bombing campaign, termed Operation Desert Fox, against Iraqi industrial
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facilities deemed capable of producing weapons of mass destruction, and against other Iraqi military facilities deemed capable of producing weapons of mass destruction, and against other Iraqi military
and security targets. and security targets.
1998-1999 1998-1999
Iraq. Beginning in late December 1998, and continuing during 1999, the United States, together with Beginning in late December 1998, and continuing during 1999, the United States, together with
forces of the coalition enforcing the “no-fly” zones over Iraq, conducted military operations against forces of the coalition enforcing the “no-fly” zones over Iraq, conducted military operations against
the Iraqi air defense system on numerous occasions in response to actual or potential threats against the Iraqi air defense system on numerous occasions in response to actual or potential threats against
aircraft enforcing the “no-fly” zones in northern and southern Iraq. aircraft enforcing the “no-fly” zones in northern and southern Iraq.
1999 1999
Bosnia. On January 19, 1999, President Clinton reported to Congress that he was continuing to On January 19, 1999, President Clinton reported to Congress that he was continuing to
authorize the use of combat-equipped U.S. Armed Forces in Bosnia and other states in the region as authorize the use of combat-equipped U.S. Armed Forces in Bosnia and other states in the region as
participants in and supporters of the NATO-led Stabilization Force (SFOR). He noted that the U.S. participants in and supporters of the NATO-led Stabilization Force (SFOR). He noted that the U.S.
SFOR military personnel totaled about 6,900, with about 2,300 U.S. military personnel deployed to SFOR military personnel totaled about 6,900, with about 2,300 U.S. military personnel deployed to
Hungary, Croatia, Italy, and other regional states. Also, some 350 U.S. military personnel remain Hungary, Croatia, Italy, and other regional states. Also, some 350 U.S. military personnel remain
deployed in the Former Yugoslav Republic of Macedonia (FYROM) as part of UNPREDEP. deployed in the Former Yugoslav Republic of Macedonia (FYROM) as part of UNPREDEP.
Kenya. On February 25, 1999, President Clinton reported to Congress that he was continuing to On February 25, 1999, President Clinton reported to Congress that he was continuing to
deploy U.S. military personnel in that country to assist in providing security for the U.S. embassy and deploy U.S. military personnel in that country to assist in providing security for the U.S. embassy and
American citizens in Nairobi, pending completion of renovations of the American citizens in Nairobi, pending completion of renovations of the ~~American~~U.S. embassy facility in embassy facility in
Nairobi, subject of a terrorist bombing in August 1998. Nairobi, subject of a terrorist bombing in August 1998.
Yugoslavia. On March 26, 1999, President Clinton reported to Congress that, on March 24, 1999, U.S. On March 26, 1999, President Clinton reported to Congress that, on March 24, 1999, U.S.
military forces, at his direction, and in coalition with NATO allies, had commenced air strikes against military forces, at his direction, and in coalition with NATO allies, had commenced air strikes against
Yugoslavia in response to the Yugoslav government’s campaign of violence and repression against the Yugoslavia in response to the Yugoslav government’s campaign of violence and repression against the
ethnic Albanian population in Kosovo. ethnic Albanian population in Kosovo.
Yugoslavia/Albania. On April 7, 1999, President Clinton reported to Congress that he had ordered On April 7, 1999, President Clinton reported to Congress that he had ordered
additional U.S. military forces to Albania, including rotary wing aircraft, artil ery, and tactical missiles additional U.S. military forces to Albania, including rotary wing aircraft, artil ery, and tactical missiles
systems to enhance NATO’s ability to conduct effective air operations in Yugoslavia. About 2,500 systems to enhance NATO’s ability to conduct effective air operations in Yugoslavia. About 2,500
soldiers and aviators are to be deployed as part of this task force. The President also reported the soldiers and aviators are to be deployed as part of this task force. The President also reported the
deployment of U.S. military forces to Albania and deployment of U.S. military forces to Albania and ~~Macedonia~~FYROM to support humanitarian disaster relief to support humanitarian disaster relief
operations for Kosovar refugees. operations for Kosovar refugees.
Yugoslavia/Albania. On May 25, 1999, President Clinton reported to Congress, “consistent with the On May 25, 1999, President Clinton reported to Congress, “consistent with the
war Powers Resolution,” that he had directed “deployment of additional aircraft and forces to war Powers Resolution,” that he had directed “deployment of additional aircraft and forces to
support NATO’s ongoing efforts [against Yugoslavia], including several thousand additional U.S. support NATO’s ongoing efforts [against Yugoslavia], including several thousand additional U.S.
Armed Forces personnel to Albania in support of the deep strike force located there.” He also Armed Forces personnel to Albania in support of the deep strike force located there.” He also
directed that additional U.S. forces be deployed to the region to assist in “humanitarian operations.” directed that additional U.S. forces be deployed to the region to assist in “humanitarian operations.”
Yugoslavia/Kosovo. On June 12, 1999, President Clinton reported to Congress, “consistent with the On June 12, 1999, President Clinton reported to Congress, “consistent with the
War Powers Resolution,” that he had directed the deployment of about “7,000 U.S. military War Powers Resolution,” that he had directed the deployment of about “7,000 U.S. military
personnel as the U.S. contribution to the approximately 50,000-member, NATO-led security force personnel as the U.S. contribution to the approximately 50,000-member, NATO-led security force
(KFOR)” currently being assembled in Kosovo. He also noted that about “1,500 U.S. military (KFOR)” currently being assembled in Kosovo. He also noted that about “1,500 U.S. military
Congressional Research Service 18 Instances of Use of United States Armed Forces Abroad, 1798-2023 personnel, under separate U.S. command and control, wil deploy to other countries in the region, as personnel, under separate U.S. command and control, wil deploy to other countries in the region, as
our national support element, in support of KFOR.” our national support element, in support of KFOR.”
Bosnia. On July 19, 1999, President Clinton reported to Congress, “consistent with the War Powers On July 19, 1999, President Clinton reported to Congress, “consistent with the War Powers
Resolution,” that about 6,200 U.S. military personnel were continuing to participate in the NATO-led Resolution,” that about 6,200 U.S. military personnel were continuing to participate in the NATO-led
Stabilization Force (SFOR) in Bosnia, and that another 2,200 personnel were supporting SFOR Stabilization Force (SFOR) in Bosnia, and that another 2,200 personnel were supporting SFOR
operations from Hungary, Croatia, and Italy. He also noted that U.S. military personnel remain in operations from Hungary, Croatia, and Italy. He also noted that U.S. military personnel remain in ~~the~~
~~Former Yugoslav Republic of Macedonia~~FYROM to support the international security presence in Kosovo to support the international security presence in Kosovo
(KFOR). (KFOR).
East Timor. On October 8, 1999, President Clinton reported to Congress “consistent with the War On October 8, 1999, President Clinton reported to Congress “consistent with the War
Powers Resolution” that he had directed the deployment of a limited number of U.S. military forces Powers Resolution” that he had directed the deployment of a limited number of U.S. military forces
to East Timor to support the U.N. multinational force (INTERFET) aimed at restoring peace to East to East Timor to support the U.N. multinational force (INTERFET) aimed at restoring peace to East
Timor. U.S. support has been limited initially to “communications, logistics, planning assistance and Timor. U.S. support has been limited initially to “communications, logistics, planning assistance and
transportation.” The President further noted that he had authorized deployment of the amphibious transportation.” The President further noted that he had authorized deployment of the amphibious
ship USS ship USS Belleau Wood, together with its helicopters and , together with its helicopters and ~~her complement of~~ personnel from the 31st personnel from the 31st
Marine Expeditionary Unit (Special Operations Capable) (MEU SOC), to the East Timor region, to Marine Expeditionary Unit (Special Operations Capable) (MEU SOC), to the East Timor region, to
provide helicopter airlift and search and rescue support to the multinational operation. U.S. provide helicopter airlift and search and rescue support to the multinational operation. U.S.
participation was anticipated to continue until the transition to a U.N. peacekeeping operation was participation was anticipated to continue until the transition to a U.N. peacekeeping operation was
complete. complete.
Yugoslavia/Kosovo. On December 15, 1999, President Clinton reported to Congress “consistent with On December 15, 1999, President Clinton reported to Congress “consistent with
the War Powers Resolution” that U.S. combat-equipped military personnel continued to serve as part the War Powers Resolution” that U.S. combat-equipped military personnel continued to serve as part
of the NATO-led security force in Kosovo (KFOR). He noted that the American contribution to of the NATO-led security force in Kosovo (KFOR). He noted that the American contribution to
KFOR in Kosovo was “approximately 8,500 U.S. military personnel.” U.S. forces were deployed in a KFOR in Kosovo was “approximately 8,500 U.S. military personnel.” U.S. forces were deployed in a
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sector around Uroševac (Ferizaj) in the eastern portion of Kosovo.” For U.S. KFOR forces, sector around Uroševac (Ferizaj) in the eastern portion of Kosovo.” For U.S. KFOR forces,
“maintaining public security is a key task.” Other U.S. military personnel are deployed to other “maintaining public security is a key task.” Other U.S. military personnel are deployed to other
countries in the region to serve in administrative and logistics support roles for U.S. forces in KFOR. countries in the region to serve in administrative and logistics support roles for U.S. forces in KFOR.
Of these forces, about 1,500 U.S. military personnel are in Of these forces, about 1,500 U.S. military personnel are in ~~Macedonia~~FYROM and Greece, and occasionally in and Greece, and occasionally in
Albania. Albania.
1999-2000 1999-2000
Iraq. At various times during 1999, and continuing throughout 2000, the United States, together with At various times during 1999, and continuing throughout 2000, the United States, together with
forces of the coalition enforcing the “no-fly” zones over Iraq, conducted military operations against forces of the coalition enforcing the “no-fly” zones over Iraq, conducted military operations against
the Iraqi air defense system on numerous occasions in response to actual or potential threats against the Iraqi air defense system on numerous occasions in response to actual or potential threats against
aircraft enforcing the “no-fly” zones in northern and southern Iraq. aircraft enforcing the “no-fly” zones in northern and southern Iraq.
2000 2000
Bosnia. On January 25, 2000, President Clinton reported to Congress “consistent with the War On January 25, 2000, President Clinton reported to Congress “consistent with the War
Powers Resolution” that the United States continued to provide combat-equipped U.S. Armed Forces Powers Resolution” that the United States continued to provide combat-equipped U.S. Armed Forces
to Bosnia-Herzegovina and other states in the region as part of the NATO led Stabilization Force to Bosnia-Herzegovina and other states in the region as part of the NATO led Stabilization Force
(SFOR). The President noted that the U.S. force contribution was being reduced from “approximately (SFOR). The President noted that the U.S. force contribution was being reduced from “approximately
6,200 to 4,600 personnel,” with the U.S. forces assigned to Multinational Division, North, around the 6,200 to 4,600 personnel,” with the U.S. forces assigned to Multinational Division, North, around the
city of Tuzla. He added that approximately 1,500 U.S. military personnel were deployed to Hungary, city of Tuzla. He added that approximately 1,500 U.S. military personnel were deployed to Hungary,
Croatia, and Italy to provide “logistical and other support to SFOR” and U.S. forces continue to Croatia, and Italy to provide “logistical and other support to SFOR” and U.S. forces continue to
support SFOR in “efforts to apprehend persons indicted for war crimes.” support SFOR in “efforts to apprehend persons indicted for war crimes.”
East Timor. On February 25, 2000, President Clinton reported to Congress “consistent with the War On February 25, 2000, President Clinton reported to Congress “consistent with the War
Powers Resolution” that he had authorized the participation of a small number of U.S. military Powers Resolution” that he had authorized the participation of a small number of U.S. military
personnel in support of the United Nations Transitional Administration in East Timor (UNTAET), personnel in support of the United Nations Transitional Administration in East Timor (UNTAET),
which has a mandate to maintain law and order throughout East Timor, and to facilitate establishment which has a mandate to maintain law and order throughout East Timor, and to facilitate establishment
of an effective administration there, delivery of humanitarian assistance, and support the building of of an effective administration there, delivery of humanitarian assistance, and support the building of
self-government. The President reported that the U.S. contingent was small: three military observers, self-government. The President reported that the U.S. contingent was small: three military observers,
and one judge advocate. To facilitate and coordinate U.S. military activities in East Timor, the and one judge advocate. To facilitate and coordinate U.S. military activities in East Timor, the
President also authorized the deployment of a support group (USGET), consisting of 30 U.S. President also authorized the deployment of a support group (USGET), consisting of 30 U.S.
personnel. U.S. personnel would be temporarily deployed to East Timor, on a rotational basis, and personnel. U.S. personnel would be temporarily deployed to East Timor, on a rotational basis, and
through periodic ship visits, during which U.S. forces would conduct “humanitarian and assistance through periodic ship visits, during which U.S. forces would conduct “humanitarian and assistance
activities throughout East Timor.”activities throughout East Timor.” ~~Rotational activities should continue through the summer of 2000.~~
Sierra Leone. On May 12, 2000, President Clinton, “consistent with the War Powers Resolution,” On May 12, 2000, President Clinton, “consistent with the War Powers Resolution,”
reported to Congress that he had ordered a U.S. Navy patrol craft to deploy to Sierra Leone to be reported to Congress that he had ordered a U.S. Navy patrol craft to deploy to Sierra Leone to be
ready to support evacuation operations from that country if needed. He also authorized a U.S. C-17 ready to support evacuation operations from that country if needed. He also authorized a U.S. C-17
aircraft to deliver “ammunition, and other supplies and equipment” to Sierra Leone in support of aircraft to deliver “ammunition, and other supplies and equipment” to Sierra Leone in support of
United Nations peacekeeping operations there. United Nations peacekeeping operations there.
Yugoslavia/Kosovo. On June 16, 2000, President Clinton reported to Congress, “consistent with the On June 16, 2000, President Clinton reported to Congress, “consistent with the
War Powers Resolution,” that the United States was continuing to provide military personnel to the War Powers Resolution,” that the United States was continuing to provide military personnel to the
NATO-led KFOR security force in Kosovo. U.S. forces were numbered at 7,500, but were scheduled NATO-led KFOR security force in Kosovo. U.S. forces were numbered at 7,500, but were scheduled
to be reduced to 6,000 when ongoing troop rotations were completed. U.S. forces in Kosovo to be reduced to 6,000 when ongoing troop rotations were completed. U.S. forces in Kosovo ~~are~~
were Congressional Research Service 19 Instances of Use of United States Armed Forces Abroad, 1798-2023 assigned to a sector centered near Gnjilane (Gjilan) in eastern Kosovo. Other U.S. military personnel assigned to a sector centered near Gnjilane (Gjilan) in eastern Kosovo. Other U.S. military personnel
~~are~~were deployed to other countries serving in administrative and logistics support roles, with deployed to other countries serving in administrative and logistics support roles, with
approximately 1,000 U.S. personnel in approximately 1,000 U.S. personnel in ~~Macedonia~~FYROM, Albania, and Greece. , Albania, and Greece.
Bosnia. On July 25, 2000, President Clinton reported to Congress, “consistent with the War Powers On July 25, 2000, President Clinton reported to Congress, “consistent with the War Powers
Resolution,” that combat-equipped U.S. military personnel continued to participate in the NATO-led Resolution,” that combat-equipped U.S. military personnel continued to participate in the NATO-led
Stabilization Force (SFOR) in Bosnia-Herzegovina, being deployed to Bosnia and other states in the Stabilization Force (SFOR) in Bosnia-Herzegovina, being deployed to Bosnia and other states in the
region in support of peacekeeping efforts in former Yugoslavia. U.S. military personnel levels have region in support of peacekeeping efforts in former Yugoslavia. U.S. military personnel levels have
been reduced from 6,200 to 4,600. Apart from the forces in Bosnia, approximately 1,000 U.S. been reduced from 6,200 to 4,600. Apart from the forces in Bosnia, approximately 1,000 U.S.
personnel personnel ~~continue~~continued to be deployed in support roles in Hungary, Croatia, and Italy. to be deployed in support roles in Hungary, Croatia, and Italy.
East Timor. On August 25, 2000, President Clinton reported to Congress, “consistent with the War On August 25, 2000, President Clinton reported to Congress, “consistent with the War
Powers Resolution,” that the United States was currently contributing three military observers to the Powers Resolution,” that the United States was currently contributing three military observers to the
United Nations Transitional Administration in East Timor (UNTAET) that United Nations Transitional Administration in East Timor (UNTAET) that iswas charged by the U.N. with charged by the U.N. with
restoring and maintaining peace and security there. He also noted that the United States was restoring and maintaining peace and security there. He also noted that the United States was
maintaining a military presence in East Timor separate from UNTAET, maintaining a military presence in East Timor separate from UNTAET, ~~comprised of~~comprising about 30 U.S. about 30 U.S.
personnel who facilitate and coordinate U.S. military activities in East Timor and rotational operations personnel who facilitate and coordinate U.S. military activities in East Timor and rotational operations
of U.S. forces there. of U.S. forces there. These U.S. forces U.S. forces ~~currently conduct~~had been conducting humanitarian and civic assistance activities for East humanitarian and civic assistance activities for East
Timor’s citizens. U.S. rotational presence operations in East Timor Timor’s citizens. U.S. rotational presence operations in East Timor ~~are presently~~were expected, the expected, the
President said, to continue through December 2000. President said, to continue through December 2000.
Yemen. On October 14, 2000, President Clinton reported to Congress, “consistent with the War On October 14, 2000, President Clinton reported to Congress, “consistent with the War
Powers Resolution,” that on October 12, 2000, in the wake of an attack on the USS Powers Resolution,” that on October 12, 2000, in the wake of an attack on the USS Cole in the port in the port
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of Aden, Yemen, he had authorized deployment of about 45 military personnel from U.S. Naval of Aden, Yemen, he had authorized deployment of about 45 military personnel from U.S. Naval
Forces Central Command to Aden to provide “medical, security, and disaster response assistance.” Forces Central Command to Aden to provide “medical, security, and disaster response assistance.”
The President further reported that on October 13, 2000, about 50 U.S. military security personnel The President further reported that on October 13, 2000, about 50 U.S. military security personnel
arrived in Aden, and that additional “security elements” may be deployed to the area, to enhance the arrived in Aden, and that additional “security elements” may be deployed to the area, to enhance the
ability of the U.S. to ensure the security of the USS ability of the U.S. to ensure the security of the USS Cole and the personnel responding to the incident. and the personnel responding to the incident.
In addition, two U.S. Navy surface combatant vessels are operating in or near Yemeni territorial In addition, two U.S. Navy surface combatant vessels are operating in or near Yemeni territorial
waters to provide communications and other support, as required. waters to provide communications and other support, as required.
Yugoslavia/Kosovo. On December 18, 2000, President Clinton reported to Congress, “consistent with On December 18, 2000, President Clinton reported to Congress, “consistent with
the War Powers Resolution,” that the United States was continuing to provide approximately 5,600 the War Powers Resolution,” that the United States was continuing to provide approximately 5,600
U.S. military personnel in support of peacekeeping efforts in Kosovo as part of KFOR. An additional U.S. military personnel in support of peacekeeping efforts in Kosovo as part of KFOR. An additional
500 U.S. military personnel 500 U.S. military personnel ~~are~~were deployed as the National Support Element in deployed as the National Support Element in ~~Macedonia~~FYROM, with an , with an
occasional presence in Albania and Greece. U.S. forces occasional presence in Albania and Greece. U.S. forces ~~are~~were assigned to a sector around Gnjilane assigned to a sector around Gnjilane (Gjilan) in the in the
eastern portion of Kosovo. The President noted that the mission for these U.S. military eastern portion of Kosovo. The President noted that the mission for these U.S. military forces was to maintain~~forces is~~
~~maintaining~~ a safe and secure environment through conducting “security patrols in urban areas and in a safe and secure environment through conducting “security patrols in urban areas and in
the countryside throughout their sector.” the countryside throughout their sector.”
2001 2001
East Timor. On March 2, 2001, President George W. Bush reported to Congress, “consistent with the On March 2, 2001, President George W. Bush reported to Congress, “consistent with the
War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations
peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East
Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-
government in East Timor. The United Statesgovernment in East Timor. The United States ~~currently has~~, at the time, had three military observers attached to three military observers attached to
UNTAET. The United States also UNTAET. The United States also ~~has~~had a separate military presence, the U.S. Support Group East a separate military presence, the U.S. Support Group East
Timor (USGET), of approximately 12 U.S. personnel, including a security detachment, which Timor (USGET), of approximately 12 U.S. personnel, including a security detachment, which
“facilitates and coordinates” U.S. military activities in East Timor. “facilitates and coordinates” U.S. military activities in East Timor.
Yugoslavia/Kosovo. On May 18, 2001, President George W. Bush reported to Congress, “consistent On May 18, 2001, President George W. Bush reported to Congress, “consistent
with the War Powers Resolution,” that the United States was continuing to provide approximately with the War Powers Resolution,” that the United States was continuing to provide approximately
6,000 U.S. military personnel in support of peacekeeping efforts in Kosovo as part of KFOR. An 6,000 U.S. military personnel in support of peacekeeping efforts in Kosovo as part of KFOR. An
additional 500 U.S. military personnel are deployed as the National Support Element in additional 500 U.S. military personnel are deployed as the National Support Element in ~~Macedonia,~~
FYROM, with an occasional presence in Greece and Albania. U.S. forces in Kosovo with an occasional presence in Greece and Albania. U.S. forces in Kosovo ~~are~~were assigned to a sector assigned to a sector
around Gnjilane in the eastern portion. President Bush noted that the mission for these U.S. military around Gnjilane in the eastern portion. President Bush noted that the mission for these U.S. military
forces forces iswas maintaining a safe and secure environment through conducting security patrols in urban maintaining a safe and secure environment through conducting security patrols in urban
areas and in the countryside through their sector. areas and in the countryside through their sector.
Bosnia. On July 25, 2001, President George W. Bush reported to Congress, “consistent with the War On July 25, 2001, President George W. Bush reported to Congress, “consistent with the War
Powers Resolution,” that about 3,800 combat-equipped U.S. Armed Forces continued to be deployed Powers Resolution,” that about 3,800 combat-equipped U.S. Armed Forces continued to be deployed
in Bosnia-Herzegovina and other regional states as part of SFOR. Most were based at Tuzla in Bosnia. in Bosnia-Herzegovina and other regional states as part of SFOR. Most were based at Tuzla in Bosnia.
About 500 others were based in Hungary, Croatia, and Italy, providing logistical and other support. About 500 others were based in Hungary, Croatia, and Italy, providing logistical and other support.
Iraq. At various times throughout 2001, the United States, together with forces of the coalition At various times throughout 2001, the United States, together with forces of the coalition
enforcing the “no-fly” zones over Iraq, conducted military operations against the Iraqi air defense enforcing the “no-fly” zones over Iraq, conducted military operations against the Iraqi air defense
Congressional Research Service 20 Instances of Use of United States Armed Forces Abroad, 1798-2023 system on numerous occasions in response to actual or potential threats against aircraft enforcing the system on numerous occasions in response to actual or potential threats against aircraft enforcing the
“no-fly” zones in northern and southern Iraq. “no-fly” zones in northern and southern Iraq.
East Timor. On August 31, 2001, President George W. Bush reported to Congress, “consistent with On August 31, 2001, President George W. Bush reported to Congress, “consistent with
the War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations the War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations
peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East
Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-
government in East Timor. The United Statesgovernment in East Timor. The United States ~~currently has~~, at the time, had three military observers attached to three military observers attached to
UNTAET. The United States also UNTAET. The United States also ~~has~~had a separate military presence, USGET, of approximately 20 U.S. a separate military presence, USGET, of approximately 20 U.S.
personnel, including a security detachment, which “facilitates and coordinates” U.S. military activities personnel, including a security detachment, which “facilitates and coordinates” U.S. military activities
in East Timor, as well as a rotational presence of U.S. forces through temporary deployments to East in East Timor, as well as a rotational presence of U.S. forces through temporary deployments to East
Timor. The President stated that U.S. forces would continue a presence through December 2001, Timor. The President stated that U.S. forces would continue a presence through December 2001,
while options for a U.S. presence in 2002 while options for a U.S. presence in 2002 ~~are~~were being reviewed, with the President’s objective being being reviewed, with the President’s objective being
redeployment of USGET personnel, as circumstances permit. redeployment of USGET personnel, as circumstances permit.
Terrorism threat. On September 24, 2001, President George W. Bush reported to Congress, On September 24, 2001, President George W. Bush reported to Congress,
“consistent with the War Powers Resolution” and “Senate Joint Resolution 23,” that in response to “consistent with the War Powers Resolution” and “Senate Joint Resolution 23,” that in response to
terrorist attacks on the World Trade Center and the Pentagonterrorist attacks on the World Trade Center and the Pentagon, he ~~he had~~ ordered the “deployment of ordered the “deployment of
various combat-equipped and combat support forces to a number of foreign nations in the Central various combat-equipped and combat support forces to a number of foreign nations in the Central
and Pacific Command areas of operations.” The President noted in efforts to “prevent and deter and Pacific Command areas of operations.” The President noted in efforts to “prevent and deter
terrorism” he might find it necessary to order “additional forces into these and other areas of the terrorism” he might find it necessary to order “additional forces into these and other areas of the
world.” He stated that he could not now predict “the scope and duration of these deployments,” or world.” He stated that he could not now predict “the scope and duration of these deployments,” or
the “actions necessary to counter the terrorist threat to the United States.” the “actions necessary to counter the terrorist threat to the United States.”
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Afghanistan. On October 9, 2001, President George W. Bush reported to Congress, “consistent with On October 9, 2001, President George W. Bush reported to Congress, “consistent with
the War Powers Resolution” and “Senate Joint Resolution 23,” that on October 7, 2001, U.S. Armed the War Powers Resolution” and “Senate Joint Resolution 23,” that on October 7, 2001, U.S. Armed
Forces “began combat action in Afghanistan against Al Qaida terrorists and their Taliban supporters.” Forces “began combat action in Afghanistan against Al Qaida terrorists and their Taliban supporters.”
The President stated that he had directed this military action in response to the September 11, 2001, The President stated that he had directed this military action in response to the September 11, 2001,
attacks on U.S. “territory, our citizens, and our way of life, and to the continuing threat of terrorist attacks on U.S. “territory, our citizens, and our way of life, and to the continuing threat of terrorist
acts against the United States and our friends and allies.” This military action was “part of our acts against the United States and our friends and allies.” This military action was “part of our
campaign against terrorism” and was “designed to disrupt the use of Afghanistan as a terrorist base of campaign against terrorism” and was “designed to disrupt the use of Afghanistan as a terrorist base of
operations.” operations.”
Yugoslavia/Kosovo. On November 19, 2001, President George W. Bush reported to Congress, On November 19, 2001, President George W. Bush reported to Congress,
“consistent with the War Powers Resolution,” that the United States was continuing to provide “consistent with the War Powers Resolution,” that the United States was continuing to provide
approximately 5,500 U.S. military personnel in support of peacekeeping efforts in Kosovo as part of approximately 5,500 U.S. military personnel in support of peacekeeping efforts in Kosovo as part of
KFOR. An additional 500 U.S. military personnel KFOR. An additional 500 U.S. military personnel ~~are~~were deployed as the National Support Element in deployed as the National Support Element in
~~Macedonia~~FYROM, with an occasional presence in Greece and Albania. U.S. forces in Kosovo , with an occasional presence in Greece and Albania. U.S. forces in Kosovo ~~are~~were assigned to assigned to
a sector around Gnjilane a sector around Gnjilane (Gjilan) in the eastern portion. President Bush noted that the mission for these U.S. in the eastern portion. President Bush noted that the mission for these U.S.
military forces military forces iswas maintaining a safe and secure environment through conducting security patrols in maintaining a safe and secure environment through conducting security patrols in
urban areas and in the countryside through their sector. urban areas and in the countryside through their sector.
2002 2002
Bosnia. On January 21, 2002, President George W. Bush reported to Congress, “consistent with the On January 21, 2002, President George W. Bush reported to Congress, “consistent with the
War Powers Resolution,” that about 3,100 combat-equipped U.S. Armed Forces continued to be War Powers Resolution,” that about 3,100 combat-equipped U.S. Armed Forces continued to be
deployed in Bosnia-Herzegovina and other regional states as part of the NATO-led Stabilization Force deployed in Bosnia-Herzegovina and other regional states as part of the NATO-led Stabilization Force
(SFOR). Most American forces were based at Tuzla in Bosnia. About 500 others were based in (SFOR). Most American forces were based at Tuzla in Bosnia. About 500 others were based in
Hungary, Croatia, and Italy, providing logistical and other support. Hungary, Croatia, and Italy, providing logistical and other support.
East Timor. On February 28, 2002, President George W. Bush reported to Congress, “consistent with On February 28, 2002, President George W. Bush reported to Congress, “consistent with
the War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations the War Powers Resolution,” that U.S. Armed Forces were continuing to support the United Nations
peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East peacekeeping effort in East Timor aimed at providing security and maintaining law and order in East
Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-Timor, coordinating delivery of humanitarian assistance, and helping establish the basis for self-
government in East Timor. The United Statesgovernment in East Timor. The United States ~~currently has~~, at the time, had three military observers attached to three military observers attached to
UNTAET. The United States also UNTAET. The United States also ~~has~~had a separate military presence, USGET, composed of a separate military presence, USGET, composed of
approximately 10 U.S. personnel, including a security detachment, which “facilitates and coordinates” approximately 10 U.S. personnel, including a security detachment, which “facilitates and coordinates”
U.S. military activities in East Timor, as well as a rotational presence of U.S. forces through temporary U.S. military activities in East Timor, as well as a rotational presence of U.S. forces through temporary
deployments to East Timor. The President stated that U.S. forces would continue a presence through deployments to East Timor. The President stated that U.S. forces would continue a presence through
2002. The President noted his objective was to gradually reduce the “rotational presence 2002. The President noted his objective was to gradually reduce the “rotational presence
operations,” and to redeploy USGET personnel, as circumstances permitted. operations,” and to redeploy USGET personnel, as circumstances permitted.
Terrorism threat. On March 20, 2002, President George W. Bush reported to Congress, “consistent On March 20, 2002, President George W. Bush reported to Congress, “consistent
with the War Powers Resolution,” on U.S. efforts in the “global war on with the War Powers Resolution,” on U.S. efforts in the “global war on ~~Terrorism~~terrorism.” He noted that .” He noted that
the “heart of the al-Qaeda training capability” had been “seriously degraded,” and that the remainder the “heart of the al-Qaeda training capability” had been “seriously degraded,” and that the remainder
of the Taliban and the al-Qaeda fighters were being “actively pursued and engaged by the U.S., of the Taliban and the al-Qaeda fighters were being “actively pursued and engaged by the U.S.,
coalition and Afghan forces.” The United States was also conducting “maritime interception coalition and Afghan forces.” The United States was also conducting “maritime interception
~~operations . . to~~ operations . . to Congressional Research Service 21 Instances of Use of United States Armed Forces Abroad, 1798-2023 locate and detain suspected al-Qaeda or Taliban leadership fleeing Afghanistan by locate and detain suspected al-Qaeda or Taliban leadership fleeing Afghanistan by
sea.” At the Philippine government’s invitation, sea.” At the Philippine government’s invitation, ~~the President~~President Bush had ordered deployed “combat- had ordered deployed “combat-
equipped and combat support forces to train with, advise, and assist” the Philippines’ Armed Forces in equipped and combat support forces to train with, advise, and assist” the Philippines’ Armed Forces in
enhancing their “existing counterterrorist capabilities.” The strength of U.S. military forces working enhancing their “existing counterterrorist capabilities.” The strength of U.S. military forces working
with the Philippines was projected to be 600 personnel. The President noted that he was “assessing with the Philippines was projected to be 600 personnel. The President noted that he was “assessing
options” for assisting other nations, including Georgia and Yemen, in enhancing their options” for assisting other nations, including Georgia and Yemen, in enhancing their
“counterterrorism capabilities, including training and equipping their armed forces.” He stated that “counterterrorism capabilities, including training and equipping their armed forces.” He stated that
U.S. combat-equipped and combat support forces would be necessary for these efforts, if undertaken. U.S. combat-equipped and combat support forces would be necessary for these efforts, if undertaken.
Yugoslavia/Kosovo. On May 17, 2002, President George W. Bush reported to Congress, “consistent On May 17, 2002, President George W. Bush reported to Congress, “consistent
with the War Powers Resolution,” that the U.S. military was continuing to support peacekeeping with the War Powers Resolution,” that the U.S. military was continuing to support peacekeeping
efforts of KFOR. He noted that the current U.S. contribution was about 5,100 military personnel, and efforts of KFOR. He noted that the current U.S. contribution was about 5,100 military personnel, and
an additional 468 personnel in an additional 468 personnel in ~~Macedonia~~FYROM, with an occasional presence in Albania and Greece. , with an occasional presence in Albania and Greece.
Bosnia. On July 22, 2002, President George W. Bush reported to Congress, “consistent with the War On July 22, 2002, President George W. Bush reported to Congress, “consistent with the War
Powers Resolution,” that the U.S. military was continuing to support peacekeeping efforts of SFOR in Powers Resolution,” that the U.S. military was continuing to support peacekeeping efforts of SFOR in
Bosnia-Herzegovina and other regional states. He noted that the Bosnia-Herzegovina and other regional states. He noted that the ~~current~~ U.S. contributionU.S. contribution, at the time, was was
“approximately 2,400 personnel.” Most U.S. forces in Bosnia-Herzegovina “approximately 2,400 personnel.” Most U.S. forces in Bosnia-Herzegovina ~~are~~were assigned to the assigned to the
Multinational Division, North, headquartered in Tuzla. An additional 60 U.S. military personnel Multinational Division, North, headquartered in Tuzla. An additional 60 U.S. military personnel ~~are~~were
deployed to Hungary and Croatia to provide logistical and other support. deployed to Hungary and Croatia to provide logistical and other support.
Terrorism threat. On September 20, 2002, President On September 20, 2002, President George W. Bush reported to Congress “consistent with the Bush reported to Congress “consistent with the
War Powers Resolution,” that U.S. “combat-equipped and combat support forces” had been War Powers Resolution,” that U.S. “combat-equipped and combat support forces” had been
deployed to the Philippines since January 2002 to train with, assist, and advise the deployed to the Philippines since January 2002 to train with, assist, and advise the Philippines’ Armed ~~Philippines’ Armed~~
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Forces in enhancing their “counterterrorist capabilities.” He added that U.S. forces were conducting Forces in enhancing their “counterterrorist capabilities.” He added that U.S. forces were conducting
maritime interception operations in the Central and European Command areas to combat movement, maritime interception operations in the Central and European Command areas to combat movement,
arming, or financing of “international terrorists.” He also noted that U.S. combat personnel had been arming, or financing of “international terrorists.” He also noted that U.S. combat personnel had been
deployed to Georgia and Yemen to help enhance the “counterterrorist capabilities” of their armed deployed to Georgia and Yemen to help enhance the “counterterrorist capabilities” of their armed
forces. forces.
Cote d’Ivoire. On September 26, 2002, President Bush reported to Congress “consistent with the War On September 26, 2002, President Bush reported to Congress “consistent with the War
Powers Resolution,” that in response to a rebellion in Cote d’Ivoire he had on September 25, 2002, Powers Resolution,” that in response to a rebellion in Cote d’Ivoire he had on September 25, 2002,
sent U.S. military personnel into Cote d’Ivoire to assist in the evacuation of American citizens and sent U.S. military personnel into Cote d’Ivoire to assist in the evacuation of American citizens and
third country nationals from the city of Bouake; and otherwise assist in other evacuations as third country nationals from the city of Bouake; and otherwise assist in other evacuations as
necessary. necessary.
Yugoslavia/Kosovo. On November 15, 2002, the President reported to Congress “consistent with the On November 15, 2002, the President reported to Congress “consistent with the
War Powers Resolution” that the United States was continuing to deploy combat equipped military War Powers Resolution” that the United States was continuing to deploy combat equipped military
personnel as part of KFOR. personnel as part of KFOR. ~~Currently there are~~At the time, there were approximately 4,350 U.S. military personnel in approximately 4,350 U.S. military personnel in
Kosovo, with an additional 266 military personnel in Kosovo, with an additional 266 military personnel in ~~Macedonia~~FYROM. The United States also . The United States also ~~has~~had an an
occasional presence in Albania and Greece, associated with the KFOR mission. occasional presence in Albania and Greece, associated with the KFOR mission.
2003 2003
Bosnia. On January 21, 2003, President George W. Bush reported to Congress, “consistent with the On January 21, 2003, President George W. Bush reported to Congress, “consistent with the
War Powers Resolution,” that about 1,800 U.S. Armed Forces personnel continued to be deployed in War Powers Resolution,” that about 1,800 U.S. Armed Forces personnel continued to be deployed in
Bosnia-Herzegovina, and other regional states as part of SFOR. Most were based at Tuzla in Bosnia. Bosnia-Herzegovina, and other regional states as part of SFOR. Most were based at Tuzla in Bosnia.
About 80 others were based in Hungary and Croatia, providing logistical and other support. About 80 others were based in Hungary and Croatia, providing logistical and other support.
Terrorism threat. On March 20, 2003, President Bush reported to Congress, “consistent with the War On March 20, 2003, President Bush reported to Congress, “consistent with the War
Powers Resolution,” as well as P.L. 107-40, and “pursuant to” his authority as Commander-in-Chief, Powers Resolution,” as well as P.L. 107-40, and “pursuant to” his authority as Commander-in-Chief,
that he had continued a number of U.S. military operations globally in the war against terrorism. that he had continued a number of U.S. military operations globally in the war against terrorism.
These military operations included ongoing U.S. actions against al-Qaeda fighters in Afghanistan; These military operations included ongoing U.S. actions against al-Qaeda fighters in Afghanistan;
col aborative anti-terror operations with forces of Pakistan in the Pakistan/Afghanistan border area; col aborative anti-terror operations with forces of Pakistan in the Pakistan/Afghanistan border area;
“maritime interception operations on the high seas” in areas of responsibility of the Central and “maritime interception operations on the high seas” in areas of responsibility of the Central and
European Commands to prevent terrorist movement and other activities; and military support for the European Commands to prevent terrorist movement and other activities; and military support for the
armed forces of Georgia and Yemen in counter-terrorism operations. armed forces of Georgia and Yemen in counter-terrorism operations.
Iraq War. On March 21, 2003, President Bush reported to Congress, “consistent with the War On March 21, 2003, President Bush reported to Congress, “consistent with the War
Powers Resolution,” as well as P.L. 102-1 and P.L. 107-243, and “pursuant to” his authority as Powers Resolution,” as well as P.L. 102-1 and P.L. 107-243, and “pursuant to” his authority as
Commander-in-Chief, that he had “directed U.S. Armed Forces, operating with other coalition forces, Commander-in-Chief, that he had “directed U.S. Armed Forces, operating with other coalition forces,
to commence operations on March 19, 2003, against Iraq.” He further stated that it was not possible to commence operations on March 19, 2003, against Iraq.” He further stated that it was not possible
to know at to know at ~~present~~the time the duration of active combat operations or the scope necessary to accomplish the duration of active combat operations or the scope necessary to accomplish
the goals of the operation “to disarm Iraq in pursuit of peace, stability, and security both in the Gulf the goals of the operation “to disarm Iraq in pursuit of peace, stability, and security both in the Gulf
region and in the United States.” region and in the United States.”
Yugoslavia/Kosovo. On May 14, 2003, President Bush reported to Congress, “consistent with the War On May 14, 2003, President Bush reported to Congress, “consistent with the War
Powers Resolution,” that combat-equipped U.S. military personnel continued to be deployed as part Powers Resolution,” that combat-equipped U.S. military personnel continued to be deployed as part
Congressional Research Service 22 Instances of Use of United States Armed Forces Abroad, 1798-2023 of KFOR. He noted that about 2,250 U.S. military personnel were deployed in Kosovo, and additional of KFOR. He noted that about 2,250 U.S. military personnel were deployed in Kosovo, and additional
military personnel operated, on occasion, from military personnel operated, on occasion, from ~~Macedonia~~FYROM, Albania, and Greece in support of KFOR , Albania, and Greece in support of KFOR
operations. operations.
Liberia. On June 9, 2003, President Bush reported to Congress, “consistent with the War Powers On June 9, 2003, President Bush reported to Congress, “consistent with the War Powers
Resolution,” that on June 8 he had sent about 35 combat-equipped U.S. military personnel into Resolution,” that on June 8 he had sent about 35 combat-equipped U.S. military personnel into
Monrovia, Liberia, to augment U.S. embassy security forces, to aid in the possible evacuation of U.S. Monrovia, Liberia, to augment U.S. embassy security forces, to aid in the possible evacuation of U.S.
citizens if necessary. The President also noted that he had sent about 34 combat-equipped U.S. citizens if necessary. The President also noted that he had sent about 34 combat-equipped U.S.
military personnel to help secure the U.S. embassy in Nouakchott, Mauritania, and to assist in military personnel to help secure the U.S. embassy in Nouakchott, Mauritania, and to assist in
evacuation of American citizens if required. They were expected to arrive at the U.S. embassy by June evacuation of American citizens if required. They were expected to arrive at the U.S. embassy by June
10, 2003. Back-up and support personnel were sent to Dakar, Senegal, to aid in any necessary 10, 2003. Back-up and support personnel were sent to Dakar, Senegal, to aid in any necessary
evacuation from either Liberia or Mauritania. evacuation from either Liberia or Mauritania.
Bosnia. On July 22, 2003, President Bush reported to Congress, “consistent with the War Powers On July 22, 2003, President Bush reported to Congress, “consistent with the War Powers
Resolution,” that the United States continued to provide about 1,800 combat-equipped military Resolution,” that the United States continued to provide about 1,800 combat-equipped military
personnel in Bosnia-Herzegovina in support of NATO’s SFOR and its peacekeeping efforts in this personnel in Bosnia-Herzegovina in support of NATO’s SFOR and its peacekeeping efforts in this
country. country.
Liberia. On August 13, 2003, President Bush reported to Congress, “consistent with the War Powers On August 13, 2003, President Bush reported to Congress, “consistent with the War Powers
Resolution,” that in response to conditions in Liberia, on August 11, 2003, heResolution,” that in response to conditions in Liberia, on August 11, 2003, he ~~had~~ authorized about authorized about
4,350 U.S. combat-equipped military personnel to enter Liberian territorial waters in support of U.N. 4,350 U.S. combat-equipped military personnel to enter Liberian territorial waters in support of U.N.
and West African States efforts to restore order and provide humanitarian assistance in Liberia. and West African States efforts to restore order and provide humanitarian assistance in Liberia.
Terrorism threat. On September 19, 2003, President Bush reported to Congress “consistent with the On September 19, 2003, President Bush reported to Congress “consistent with the
War Powers Resolution,” that U.S. “combat-equipped and combat support forces” War Powers Resolution,” that U.S. “combat-equipped and combat support forces” ~~continue to be~~
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continued to be deployed at a number of locations around the world as part of U.S. anti-terrorism efforts. American deployed at a number of locations around the world as part of U.S. anti-terrorism efforts. American
forces support anti-terrorism efforts in the Philippines, and maritime interception operations forces support anti-terrorism efforts in the Philippines, and maritime interception operations ~~continue~~
continued on the high seas in the Central, European, and Pacific Command areas of responsibility, to “prevent on the high seas in the Central, European, and Pacific Command areas of responsibility, to “prevent
the movement, arming, or financing of international terrorists.” He also noted that “U.S. combat the movement, arming, or financing of international terrorists.” He also noted that “U.S. combat
equipped and support forces” had been deployed to Georgia and Djibouti to help in enhancing their equipped and support forces” had been deployed to Georgia and Djibouti to help in enhancing their
“counterterrorist capabilities.” “counterterrorist capabilities.”
Yugoslavia/Kosovo. On November 14, 2003, the President reported to Congress “consistent with the On November 14, 2003, the President reported to Congress “consistent with the
War Powers Resolution” that the United States was continuing to deploy combat equipped military War Powers Resolution” that the United States was continuing to deploy combat equipped military
personnel as part of the NATO-led international security force in Kosovo (KFOR). personnel as part of the NATO-led international security force in Kosovo (KFOR). ~~Currently~~At the time, there there
~~are~~were approximately 2,100 U.S. military personnel in Kosovo, with additional American military approximately 2,100 U.S. military personnel in Kosovo, with additional American military
personnel operating out of personnel operating out of ~~Macedonia~~FYROM, Albania and Greece, in support of KFOR operations. , Albania and Greece, in support of KFOR operations.
2004 2004
Bosnia. On January 22, 2004, On January 22, 2004, ~~the President~~President George W. Bush reported to Congress “consistent with the War Powers reported to Congress “consistent with the War Powers
Resolution” that the United States was continuing to deploy combat equipped military personnel Resolution” that the United States was continuing to deploy combat equipped military personnel
Bosnia and Herzegovina in support of NATO’s SFOR and its peacekeeping efforts in this country. Bosnia and Herzegovina in support of NATO’s SFOR and its peacekeeping efforts in this country.
About 1,800 U.S. personnel About 1,800 U.S. personnel ~~are participating~~participated. .
Haiti. On February 25, 2004, the President reported to Congress “consistent with the War Powers On February 25, 2004, the President reported to Congress “consistent with the War Powers
Resolution” that, on February 23, he had sent a combat-equipped “security force” of about “55 U.S. Resolution” that, on February 23, he had sent a combat-equipped “security force” of about “55 U.S.
military personnel from the U.S. Joint Forces Command” to Port-au-Prince, Haiti, to augment the U.S. military personnel from the U.S. Joint Forces Command” to Port-au-Prince, Haiti, to augment the U.S.
embassy security forces there and to protect American citizens and property in light of the instability embassy security forces there and to protect American citizens and property in light of the instability
created by the armed rebellion in Haiti. created by the armed rebellion in Haiti.
Haiti. On March 2, 2004, the President reported to Congress “consistent with the War Powers On March 2, 2004, the President reported to Congress “consistent with the War Powers
Resolution” that on February 29Resolution” that on February 29, he had sent about “200 additional U.S. combat-equipped, military he had sent about “200 additional U.S. combat-equipped, military
personnel from the U.S. Joint Forces Command” to Port-au-Prince, Haiti, for a variety of purposes, personnel from the U.S. Joint Forces Command” to Port-au-Prince, Haiti, for a variety of purposes,
including preparing the way for a U.N. Multinational Interim Force, and otherwise supporting U.N. including preparing the way for a U.N. Multinational Interim Force, and otherwise supporting U.N.
Security Council Resolution 1529 (2004). Security Council Resolution 1529 (2004).
Terrorism/Bosnia and Haiti. On March 20, 2004, the President reported to Congress “consistent with On March 20, 2004, the President reported to Congress “consistent with
the War Powers Resolution,” a consolidated report giving details of multiple the War Powers Resolution,” a consolidated report giving details of multiple ~~on-going~~ongoing United States United States
military deployments and operations “in support of the global war on terrorism (including in military deployments and operations “in support of the global war on terrorism (including in
Afghanistan),” as well as operations in Bosnia and Herzegovina, Kosovo, and Haiti. In this report, the Afghanistan),” as well as operations in Bosnia and Herzegovina, Kosovo, and Haiti. In this report, the
President noted that U.S. anti-terror related activities were underway in Georgia, Djibouti, Kenya, President noted that U.S. anti-terror related activities were underway in Georgia, Djibouti, Kenya,
Ethiopia, Yemen, and Eritrea. He further noted that U.S. combat-equipped military personnel Ethiopia, Yemen, and Eritrea. He further noted that U.S. combat-equipped military personnel
continued to be deployed in Kosovo as part of the NATO-led KFOR (1,900 personnel); in Bosnia and continued to be deployed in Kosovo as part of the NATO-led KFOR (1,900 personnel); in Bosnia and
Herzegovina as part of the NATO-led SFOR (about 1,100 personnel); and approximately 1,800 Herzegovina as part of the NATO-led SFOR (about 1,100 personnel); and approximately 1,800
military personnel were deployed in Haiti as part of the U.N. Multinational Interim Force. military personnel were deployed in Haiti as part of the U.N. Multinational Interim Force.
Terrorism threat/Horn of Africa/Kosovo/Bosnia/Iraq. On November 4, 2004, the President sent to On November 4, 2004, the President sent to
Congress, “consistent with the War Powers Resolution,” a consolidated report giving details of Congress, “consistent with the War Powers Resolution,” a consolidated report giving details of
Congressional Research Service 23 Instances of Use of United States Armed Forces Abroad, 1798-2023 multiple ongoing United States military deployments and operations “in support of the global war on multiple ongoing United States military deployments and operations “in support of the global war on
terrorism.” These deployments, support or military operations include activities in Afghanistan, terrorism.” These deployments, support or military operations include activities in Afghanistan,
Djibouti, as well as Kenya, Ethiopia, Eritrea, Bosnia and Herzegovina, and Kosovo. In this report, the Djibouti, as well as Kenya, Ethiopia, Eritrea, Bosnia and Herzegovina, and Kosovo. In this report, the
President noted that U.S. anti-terror related activities were underway in Djibouti, Kenya, Ethiopia, President noted that U.S. anti-terror related activities were underway in Djibouti, Kenya, Ethiopia,
Yemen, and Eritrea. He further noted that U.S. combat-equipped military personnel continued to be Yemen, and Eritrea. He further noted that U.S. combat-equipped military personnel continued to be
deployed in Kosovo as part of the NATO-led KFOR (1,800 personnel); and in Bosnia and deployed in Kosovo as part of the NATO-led KFOR (1,800 personnel); and in Bosnia and
Herzegovina as part of the NATO-led SFOR (about 1,000 personnel). Meanwhile, he stated that the Herzegovina as part of the NATO-led SFOR (about 1,000 personnel). Meanwhile, he stated that the
United States continued to deploy more than 135,000 military personnel in Iraq. United States continued to deploy more than 135,000 military personnel in Iraq.
2005 2005
Terrorism threat/Horn of Africa/Kosovo/Bosnia. On May 20, 2005, On May 20, 2005, ~~the President~~President George W. Bush sent to Congress sent to Congress
“consistent with the War Powers Resolution,” a consolidated report giving details of multiple ongoing “consistent with the War Powers Resolution,” a consolidated report giving details of multiple ongoing
United States military deployments and operations “in support of the global war on terrorism,” as United States military deployments and operations “in support of the global war on terrorism,” as
well as operations in Iraq, where about 139,000 U.S. military personnel were deployed. U.S. forces well as operations in Iraq, where about 139,000 U.S. military personnel were deployed. U.S. forces
are also deployed in Kenya, Ethiopia, Yemen, Eritrea, and Djibouti assisting in “enhancing counter-are also deployed in Kenya, Ethiopia, Yemen, Eritrea, and Djibouti assisting in “enhancing counter-
terrorism capabilities” of these nations. The President further noted that U.S. combat-equipped terrorism capabilities” of these nations. The President further noted that U.S. combat-equipped
military personnel continued to be deployed in Kosovo as part of the NATO-led KFOR (1,700 military personnel continued to be deployed in Kosovo as part of the NATO-led KFOR (1,700
personnel). Approximately 235 U.S. personnel personnel). Approximately 235 U.S. personnel ~~are~~were also deployed in Bosnia and Herzegovina as part of also deployed in Bosnia and Herzegovina as part of
the NATO Headquarters-Sarajevo who assist in defense reform and perform operational tasks, such the NATO Headquarters-Sarajevo who assist in defense reform and perform operational tasks, such
as counter-terrorism and supporting the International Criminal Court for the Former Yugoslavia. as counter-terrorism and supporting the International Criminal Court for the Former Yugoslavia.
Terrorism threat/Horn of Africa/Kosovo/Bosnia/Iraq. On December 7, 2005, the President sent to On December 7, 2005, the President sent to
Congress “consistent” with the War Powers Resolution, a consolidated report giving details of Congress “consistent” with the War Powers Resolution, a consolidated report giving details of
multiple ongoing United States military deployments and operations “in support of the global war on multiple ongoing United States military deployments and operations “in support of the global war on
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terrorism,” and in support of the Multinational Force in Iraq, where about 160,000 U.S. military terrorism,” and in support of the Multinational Force in Iraq, where about 160,000 U.S. military
personnel were deployed. U.S. forces were also deployed in the Horn of Africa region—Kenya, personnel were deployed. U.S. forces were also deployed in the Horn of Africa region—Kenya,
Ethiopia, Yemen, and Djibouti—assisting in “enhancing counter-terrorism capabilities” of these Ethiopia, Yemen, and Djibouti—assisting in “enhancing counter-terrorism capabilities” of these
nations. The President further noted that U.S. combat-equipped military personnel continued to be nations. The President further noted that U.S. combat-equipped military personnel continued to be
deployed in Kosovo as part of the NATO-led KFOR (1,700 personnel). Approximately 220 U.S. deployed in Kosovo as part of the NATO-led KFOR (1,700 personnel). Approximately 220 U.S.
personnel were also deployed in Bosnia and Herzegovina as part of the NATO Headquarters-personnel were also deployed in Bosnia and Herzegovina as part of the NATO Headquarters-
Sarajevo who assist in defense reform and perform operational tasks, such as “counter-terrorism and Sarajevo who assist in defense reform and perform operational tasks, such as “counter-terrorism and
supporting the International Criminal Court for the Former Yugoslavia.” supporting the International Criminal Court for the Former Yugoslavia.”
2006 2006
Terrorism threat/Kosovo/Bosnia/Iraq. On June 15, 2006, On June 15, 2006, ~~the President~~President George W. Bush sent to Congress, “consistent” sent to Congress, “consistent”
with the War Powers Resolution, a consolidated report giving details of multiple ongoing United with the War Powers Resolution, a consolidated report giving details of multiple ongoing United
States military deployments and operations “in support of the war on terror,” and in Kosovo, Bosnia States military deployments and operations “in support of the war on terror,” and in Kosovo, Bosnia
and Herzegovina, and as part of the Multinational Force (MNF) in Iraq. About 131,000 military and Herzegovina, and as part of the Multinational Force (MNF) in Iraq. About 131,000 military
personnel were deployed in Iraq. U.S. forces were also deployed in the Horn of Africa region, and in personnel were deployed in Iraq. U.S. forces were also deployed in the Horn of Africa region, and in
Djibouti to support necessary operations against al-Qaida and other international terrorists operating Djibouti to support necessary operations against al-Qaida and other international terrorists operating
in the region. U.S. military personnel in the region. U.S. military personnel ~~continue~~continued to support the NATO-led KFOR. The U.S. to support the NATO-led KFOR. The U.S.
contribution to KFOR was about 1,700 military personnel. The NATO Headquarters-Sarajevo was contribution to KFOR was about 1,700 military personnel. The NATO Headquarters-Sarajevo was
established in November 22, 2004, as a successor to its stabilization operations in Bosnia-Herzegovina established in November 22, 2004, as a successor to its stabilization operations in Bosnia-Herzegovina
to continue to assist in implementing the peace agreement. Approximately 250 U.S. personnel were to continue to assist in implementing the peace agreement. Approximately 250 U.S. personnel were
assigned to the NATO Headquarters-Sarajevo to assist in defense reform and perform operational assigned to the NATO Headquarters-Sarajevo to assist in defense reform and perform operational
tasks, such as “counter-terrorism and supporting the International Criminal Court for the Former tasks, such as “counter-terrorism and supporting the International Criminal Court for the Former
Yugoslavia.” Yugoslavia.”
Lebanon. On July 18, 2006, the President reported to Congress “consistent” with the War Powers On July 18, 2006, the President reported to Congress “consistent” with the War Powers
Resolution, that in response to the security threat posed in Lebanon to U.S. embassy personnel and Resolution, that in response to the security threat posed in Lebanon to U.S. embassy personnel and
citizens and designated third country personnel, he had deployed combat-equipped military citizens and designated third country personnel, he had deployed combat-equipped military
helicopters and military personnel to Beirut to assist in the departure of the persons under threat helicopters and military personnel to Beirut to assist in the departure of the persons under threat
from Lebanon. The President noted that additional combat-equipped U.S. military forces may be from Lebanon. The President noted that additional combat-equipped U.S. military forces may be
deployed “to Lebanon, Cyprus and other locations, as necessary” to assist further departures of deployed “to Lebanon, Cyprus and other locations, as necessary” to assist further departures of
persons from Lebanon and to provide security. He further stated that once the threat to U.S. citizens persons from Lebanon and to provide security. He further stated that once the threat to U.S. citizens
and property has ended, the U.S. military forces would redeploy. and property has ended, the U.S. military forces would redeploy.
Terrorism threat/Horn of Africa/Kosovo/Bosnia. On December 15, 2006, the President sent to Congress, On December 15, 2006, the President sent to Congress,
“consistent” with the War Powers Resolution, a consolidated report giving details of multiple ongoing “consistent” with the War Powers Resolution, a consolidated report giving details of multiple ongoing
United States military deployments and operations “in support of the war on terror,” in Kosovo, United States military deployments and operations “in support of the war on terror,” in Kosovo,
Bosnia and Herzegovina, and as part of the Multinational Force (MNF) in Iraq. Bosnia and Herzegovina, and as part of the Multinational Force (MNF) in Iraq. ~~About~~ At the time, about 134,000 military 134,000 military
personnel personnel ~~are~~were deployed in Iraq. U.S. forces were also deployed in the Horn of Africa region, and in deployed in Iraq. U.S. forces were also deployed in the Horn of Africa region, and in
Djibouti to support necessary operations against al-Qaida and other international terrorists operating Djibouti to support necessary operations against al-Qaida and other international terrorists operating
in the region, including Yemen. U.S. military personnel continue to support the in the region, including Yemen. U.S. military personnel continue to support the Congressional Research Service 24 Instances of Use of United States Armed Forces Abroad, 1798-2023 NATO-led KFOR. ~~NATO-led KFOR.~~
The U.S. contribution to KFOR was about 1,700 military personnel. The NATO Headquarters-The U.S. contribution to KFOR was about 1,700 military personnel. The NATO Headquarters-
Sarajevo was established in November 22, 2004, as a successor to its stabilization operations in Sarajevo was established in November 22, 2004, as a successor to its stabilization operations in
Bosnia-Herzegovina to continue to assist in implementing the peace agreement. Approximately 100 Bosnia-Herzegovina to continue to assist in implementing the peace agreement. Approximately 100
U.S. personnel were assigned to the NATO Headquarters-Sarajevo to assist in defense reform and U.S. personnel were assigned to the NATO Headquarters-Sarajevo to assist in defense reform and
perform operational tasks, such as “counter-terrorism and supporting the International Criminal perform operational tasks, such as “counter-terrorism and supporting the International Criminal
Court for the Former Yugoslavia.” Court for the Former Yugoslavia.”
2007 2007
Terrorism threat/Kosovo/Afghanistan. On June 15, 2007, On June 15, 2007, ~~the President~~President George W. Bush sent to Congress, “consistent” sent to Congress, “consistent”
with the War Powers Resolution, a consolidated report giving details of ongoing United States with the War Powers Resolution, a consolidated report giving details of ongoing United States
military deployments and operations “in support of the war on terror,” and in support of the NATO-military deployments and operations “in support of the war on terror,” and in support of the NATO-
led KFOR. The President reported that various U.S. “combat-equipped and combat-support forces” led KFOR. The President reported that various U.S. “combat-equipped and combat-support forces”
were deployed to “a number of locations in the Central, Pacific, European (KFOR), and Southern were deployed to “a number of locations in the Central, Pacific, European (KFOR), and Southern
Command areas of operation” and were engaged in combat operations against al-Qaida terrorists and Command areas of operation” and were engaged in combat operations against al-Qaida terrorists and
their supporters. The United States their supporters. The United States iswas currently “pursuing and engaging remnant al-Qaida and Taliban currently “pursuing and engaging remnant al-Qaida and Taliban
fighters in Afghanistan.” U.S. forces in Afghanistan currently total approximately 25,945. Of this total, fighters in Afghanistan.” U.S. forces in Afghanistan currently total approximately 25,945. Of this total,
“approximately 14,340 are assigned to the International Security Assistance Force (ISAF) in “approximately 14,340 are assigned to the International Security Assistance Force (ISAF) in
Afghanistan.” The U.S. military continues to support peacekeeping operations in Kosovo, specifically Afghanistan.” The U.S. military continues to support peacekeeping operations in Kosovo, specifically
the NATO-led KFOR. the NATO-led KFOR. ~~Currently~~At the time, the U.S. contribution to KFOR in Kosovo , the U.S. contribution to KFOR in Kosovo is was approximately 1,584 approximately 1,584
military personnel. military personnel.
Terrorism threat/Kosovo/Afghanistan. On December 14, 2007, the President sent to Congress On December 14, 2007, the President sent to Congress
“consistent with the War Powers Resolution,” a consolidated report giving details of ongoing United “consistent with the War Powers Resolution,” a consolidated report giving details of ongoing United
States military deployments and operations “in support of the war on terror,” and in support of the States military deployments and operations “in support of the war on terror,” and in support of the
NATO-led Kosovo Force (KFOR). The President reported that various U.S. “combat-equipped and NATO-led Kosovo Force (KFOR). The President reported that various U.S. “combat-equipped and
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combat-support forces” were deployed to “a number of locations in the Central, Pacific, European, combat-support forces” were deployed to “a number of locations in the Central, Pacific, European,
and Southern Command areas of operation” and were engaged in combat operations against al-Qaida and Southern Command areas of operation” and were engaged in combat operations against al-Qaida
terrorists and their supporters. The United States terrorists and their supporters. The United States iswas currently “pursuing and engaging remnant al- currently “pursuing and engaging remnant al-
Qaida and Taliban fighters in Afghanistan.” Qaida and Taliban fighters in Afghanistan.” At the time, U.S. forces in Afghanistan U.S. forces in Afghanistan ~~currently total~~ totaled approximately approximately
25,900. Of this total, “approximately 15,180 are assigned to the International Security Assistance 25,900. Of this total, “approximately 15,180 are assigned to the International Security Assistance
Force (ISAF) in Afghanistan.” The U.S. military Force (ISAF) in Afghanistan.” The U.S. military ~~continues~~continued to support peacekeeping operations in to support peacekeeping operations in
Kosovo, specifically, the NATO-led KFOR. Kosovo, specifically, the NATO-led KFOR. ~~Currently, the~~The U.S. contribution to KFOR in Kosovo U.S. contribution to KFOR in Kosovo is
was approximately 1,498 military personnel. approximately 1,498 military personnel.
2008 2008
Terrorism threat/Kosovo/Afghanistan. On June 13, 2008, On June 13, 2008, ~~the President~~President George W. Bush sent to Congress, “consistent sent to Congress, “consistent
with the War Powers Resolution,” a consolidated report giving details of ongoing United States with the War Powers Resolution,” a consolidated report giving details of ongoing United States
military deployments and operations “in support of the war on terror,” and in support of the NATO-military deployments and operations “in support of the war on terror,” and in support of the NATO-
led KFOR. The President reported that various U.S. “combat-equipped and combat-support forces” led KFOR. The President reported that various U.S. “combat-equipped and combat-support forces”
were deployed to “a number of locations in the Central, Pacific, European, and Southern Command were deployed to “a number of locations in the Central, Pacific, European, and Southern Command
areas of operation” and were engaged in combat operations against al-Qaida terrorists and their areas of operation” and were engaged in combat operations against al-Qaida terrorists and their
supporters. The United States supporters. The United States iswas actively “pursuing and engaging remnant al-Qaida and Taliban fighters actively “pursuing and engaging remnant al-Qaida and Taliban fighters
in Afghanistan.” in Afghanistan.” At the time, U.S. forces in Afghanistan U.S. forces in Afghanistan ~~currently total~~totaled approximately 31,122. Of this total, approximately 31,122. Of this total,
“approximately 14,275 are assigned to the International Security Assistance Force (ISAF) in “approximately 14,275 are assigned to the International Security Assistance Force (ISAF) in
Afghanistan.” The U.S. military Afghanistan.” The U.S. military ~~continues~~continued to support peacekeeping operations in Kosovo, specifically, to support peacekeeping operations in Kosovo, specifically,
the NATO-led KFOR. the NATO-led KFOR. ~~Currently, the~~The U.S. contribution to KFOR in Kosovo U.S. contribution to KFOR in Kosovo iswas approximately 1,500 approximately 1,500
military personnel. military personnel.
Terrorism threat/Kosovo/Afghanistan. On December 16, 2008, the President sent to Congress, On December 16, 2008, the President sent to Congress,
“consistent with the War Powers Resolution,” a consolidated report giving details of ongoing United “consistent with the War Powers Resolution,” a consolidated report giving details of ongoing United
States military deployments and operations “in support of the war on terror,” and in support of the States military deployments and operations “in support of the war on terror,” and in support of the
NATO-led KFOR. The President reported that various U.S. “combat-equipped and combat-support NATO-led KFOR. The President reported that various U.S. “combat-equipped and combat-support
forces” were deployed to “a number of locations in the Central, Pacific, European, Southern, and forces” were deployed to “a number of locations in the Central, Pacific, European, Southern, and
Africa Command areas of operation” and were engaged in combat operations against al-Qaida and Africa Command areas of operation” and were engaged in combat operations against al-Qaida and
their supporters. The United States their supporters. The United States iswas “actively pursuing and engaging remnant al-Qaida and Taliban “actively pursuing and engaging remnant al-Qaida and Taliban
fighters in Afghanistan.” U.S. forces in Afghanistan fighters in Afghanistan.” U.S. forces in Afghanistan ~~total~~totaled approximately 31,000. Of this total, approximately 31,000. Of this total,
“approximately 13, 000 are assigned to the International Security Assistance Force (ISAF) in “approximately 13, 000 are assigned to the International Security Assistance Force (ISAF) in
Afghanistan.” The U.S. military Afghanistan.” The U.S. military ~~continues~~continued to support peacekeeping operations in Kosovo, specifically to support peacekeeping operations in Kosovo, specifically
the NATO-led KFOR. The the NATO-led KFOR. The ~~current~~ U.S. contribution to KFOR in KosovoU.S. contribution to KFOR in Kosovo is, at the time, was about 1,500 military about 1,500 military
personnel. personnel.
2009 2009
Terrorism threat/Afghanistan/Iraq/Kosovo. On June 15, 2009, President Obama sent to Congress, . On June 15, 2009, President Obama sent to Congress,
“consistent with the War Powers Resolution,” a supplemental consolidated report, giving details of “consistent with the War Powers Resolution,” a supplemental consolidated report, giving details of
“ongoing contingency operations overseas.” The report noted that the total number of U.S. forces in “ongoing contingency operations overseas.” The report noted that the total number of U.S. forces in
Afghanistan was “approximately 58,000,” of which approximately 20,000 Afghanistan was “approximately 58,000,” of which approximately 20,000 ~~are~~were assigned to the Congressional Research Service 25 Instances of Use of United States Armed Forces Abroad, 1798-2023 ~~assigned to the~~
International Security Assistance Force (ISAF) in Afghanistan. The United States International Security Assistance Force (ISAF) in Afghanistan. The United States ~~continues~~continued to pursue to pursue
and engage “remaining al-Qaida and Taliban forces in Afghanistan.” The United States also and engage “remaining al-Qaida and Taliban forces in Afghanistan.” The United States also ~~continues~~continued
to deploy military forces in support of the Multinational Force (MNF) in Iraq. The to deploy military forces in support of the Multinational Force (MNF) in Iraq. The ~~current~~ U.S. U.S.
contribution to this effort contribution to this effort iswas “approximately 138,000 U.S. military personnel.” U.S. military operations “approximately 138,000 U.S. military personnel.” U.S. military operations
~~continue~~continued in Kosovo, as part of the NATO-led KFOR. in Kosovo, as part of the NATO-led KFOR. ~~Presently~~At the time, the United States the United States ~~contributes~~
contributed approximately 1,400 U.S. military personnel to KFOR. In addition, the United states approximately 1,400 U.S. military personnel to KFOR. In addition, the United states ~~continues~~continued to to
deploy “U.S. combat-equipped forces to help enhance the counterterrorism capabilities of our friends deploy “U.S. combat-equipped forces to help enhance the counterterrorism capabilities of our friends
and allies” not only in the Horn of Africa region, but globally through “maritime interception and allies” not only in the Horn of Africa region, but globally through “maritime interception
operations on the high seas” aimed at blocking the “movement, arming and financing of international operations on the high seas” aimed at blocking the “movement, arming and financing of international
terrorists.” terrorists.”
Terrorism threat/Afghanistan/Iraq/Kosovo. On December 5, 2009, the President sent to Congress On December 5, 2009, the President sent to Congress
“consistent with the War Powers Resolution,” a consolidated report, giving details of “global “consistent with the War Powers Resolution,” a consolidated report, giving details of “global
deployments of U.S. Armed Forces equipped for combat.” The report detailed “ongoing U.S. deployments of U.S. Armed Forces equipped for combat.” The report detailed “ongoing U.S.
contingency operations overseas.” The report noted that the total number of U.S. forces in contingency operations overseas.” The report noted that the total number of U.S. forces in
Afghanistan was “approximately 68,000,” of which approximately 34,000 are assigned to the Afghanistan was “approximately 68,000,” of which approximately 34,000 are assigned to the
International Security Assistance Force (ISAF) in Afghanistan. The United States International Security Assistance Force (ISAF) in Afghanistan. The United States ~~continues~~continued to pursue to pursue
and engage “remaining al-Qaida and Taliban forces in Afghanistan.” The United States has deployed and engage “remaining al-Qaida and Taliban forces in Afghanistan.” The United States has deployed
“various combat-equipped forces to a number of locations in the Central, Pacific, European, Southern “various combat-equipped forces to a number of locations in the Central, Pacific, European, Southern
and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida actions. The and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida actions. The
United States also continues to deploy military forces in Iraq to “maintain security and stability” there. United States also continues to deploy military forces in Iraq to “maintain security and stability” there.
These Iraqi operations These Iraqi operations ~~continue~~continued pursuant to the terms of a bilateral agreement between the United pursuant to the terms of a bilateral agreement between the United
States and Iraq, which entered into force on January 1, 2009. The States and Iraq, which entered into force on January 1, 2009. The ~~current U.S. force level in Iraq is~~
~~Congressional Research Service~~
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U.S. force level in Iraq was “approximately 116,000 U.S. military personnel.” U.S. military operations “approximately 116,000 U.S. military personnel.” U.S. military operations ~~continue~~continued in Kosovo, as part in Kosovo, as part
of the NATO-led KFOR. of the NATO-led KFOR. ~~Presently the~~The United States United States ~~contributes~~contributed approximately 1,475 U.S. military approximately 1,475 U.S. military
personnel to KFOR. In addition, the United States personnel to KFOR. In addition, the United States ~~continues~~continued to deploy “U.S. combat-equipped forces to deploy “U.S. combat-equipped forces
to assist in enhancing the counterterrorism capabilities of our friends and allies” not only in the Horn to assist in enhancing the counterterrorism capabilities of our friends and allies” not only in the Horn
of Africa region, but globally through “maritime interception operations on the high seas” aimed at of Africa region, but globally through “maritime interception operations on the high seas” aimed at
blocking the “movement, arming and financing of international terrorists.” blocking the “movement, arming and financing of international terrorists.”
2010 2010
Terrorism threat/Afghanistan/Iraq/Kosovo. On June 15, 2010, . On June 15, 2010, ~~the President~~President Obama sent to Congress, “consistent sent to Congress, “consistent
with the War Powers Resolution,” a consolidated report giving details of “deployments of U.S. with the War Powers Resolution,” a consolidated report giving details of “deployments of U.S.
Armed Forces equipped for combat.” The report noted that the total number of U.S. forces in Armed Forces equipped for combat.” The report noted that the total number of U.S. forces in
Afghanistan was “approximately 87,000,” of which over 62,000 Afghanistan was “approximately 87,000,” of which over 62,000 ~~are~~were assigned to the International assigned to the International
Security Assistance Force (ISAF) in Afghanistan. The United States Security Assistance Force (ISAF) in Afghanistan. The United States ~~continues~~continued combat operations combat operations
“against al-Qaida terrorists and their Taliban supporters” in Afghanistan. The United States “against al-Qaida terrorists and their Taliban supporters” in Afghanistan. The United States ~~has~~had
deployed “combat-equipped forces to a number of locations in the U.S. Central, Pacific, European, deployed “combat-equipped forces to a number of locations in the U.S. Central, Pacific, European,
Southern and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida Southern and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida
actions. The United States also actions. The United States also ~~continues~~continued to deploy military forces in Iraq to “maintain security and to deploy military forces in Iraq to “maintain security and
stability” there. These Iraqi operations stability” there. These Iraqi operations ~~continue~~continued pursuant to the terms of a bilateral agreement pursuant to the terms of a bilateral agreement
between the United States and Iraq, which entered into force on January 1, 2009. The between the United States and Iraq, which entered into force on January 1, 2009. The ~~current~~ U.S. U.S.
force level in Iraqforce level in Iraq is, at the time, was “approximately 95,000 U.S. military personnel.” U.S. military operations “approximately 95,000 U.S. military personnel.” U.S. military operations ~~continue~~
continued in Kosovo, as part of the NATO-led KFOR. in Kosovo, as part of the NATO-led KFOR. ~~Presently, the~~The United States United States ~~contributes~~contributed approximately approximately
1,074 U.S. military personnel to KFOR. In addition, the United States 1,074 U.S. military personnel to KFOR. In addition, the United States ~~continues~~continued to “conduct maritime to “conduct maritime
interception operations on the high seas” directed at “stopping the movement, arming and financing interception operations on the high seas” directed at “stopping the movement, arming and financing
of international terrorist groups.” of international terrorist groups.”
Terrorism threat/Afghanistan/Iraq/Kosovo. On December 15, 2010, the President submitted to Congress On December 15, 2010, the President submitted to Congress
“consistent with the War Powers Resolution,” a consolidated report, detailing “deployments of U.S. “consistent with the War Powers Resolution,” a consolidated report, detailing “deployments of U.S.
Armed Forces equipped for combat.” The report noted that the total number of U.S. forces in Armed Forces equipped for combat.” The report noted that the total number of U.S. forces in
Afghanistan was “approximately 97,500” of which over 81,500 were assigned to the International Afghanistan was “approximately 97,500” of which over 81,500 were assigned to the International
Security Assistance Force (ISAF) in Afghanistan. The United States Security Assistance Force (ISAF) in Afghanistan. The United States ~~is continuing~~continued combat operations combat operations
“against al-Qaida terrorists and their Taliban supporters” in Afghanistan. The United States “against al-Qaida terrorists and their Taliban supporters” in Afghanistan. The United States ~~has~~had
deployed “combat-equipped forces to a number of locations in the U.S. Central, Pacific, European, deployed “combat-equipped forces to a number of locations in the U.S. Central, Pacific, European,
Southern and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida Southern and African Command areas of operation” in support of anti-terrorist and anti-al-Qaida
actions. In addition, the United States actions. In addition, the United States ~~continues~~continued to conduct “maritime interception operations on the to conduct “maritime interception operations on the
high seas in the areas of responsibility of the geographic combatant commands” directed at “stopping high seas in the areas of responsibility of the geographic combatant commands” directed at “stopping
the movement, arming and financing of international terrorist groups.” The United States also the movement, arming and financing of international terrorist groups.” The United States also
~~continues~~continued to deploy military forces in Iraq in support of Iraqi efforts to “maintain security and to deploy military forces in Iraq in support of Iraqi efforts to “maintain security and
stability” there. These Iraqi operations stability” there. These Iraqi operations ~~continue~~continued pursuant to the terms of a bilateral agreement pursuant to the terms of a bilateral agreement
between the United States and Iraq, which entered into force on January 1, 2009. The between the United States and Iraq, which entered into force on January 1, 2009. The ~~current U.S.~~
U.S. force level in Iraqforce level in Iraq is, at the time, was “approximately 48,400 U.S. military personnel.” U.S. military operations also “approximately 48,400 U.S. military personnel.” U.S. military operations also
~~continue~~ Congressional Research Service 26 Instances of Use of United States Armed Forces Abroad, 1798-2023 continued in Kosovo, as part of the NATO-led KFOR. The United States in Kosovo, as part of the NATO-led KFOR. The United States ~~currently contributes~~
~~approximately~~ contributed approximately 808 U.S. military personnel to KFOR. 808 U.S. military personnel to KFOR.
2011 2011
Terrorism threat/Afghanistan/Libya/Kosovo. On June 15, 2011, . On June 15, 2011, ~~the President~~President Obama sent to Congress, sent to Congress,
“consistent with the War Powers Resolution,” a supplemental consolidated report giving details of “consistent with the War Powers Resolution,” a supplemental consolidated report giving details of
“global deployments of U.S. Armed Forces equipped for combat.” The report detailed ongoing U.S. “global deployments of U.S. Armed Forces equipped for combat.” The report detailed ongoing U.S.
contingency operations overseas. The report noted that the total number of U.S. forces in contingency operations overseas. The report noted that the total number of U.S. forces in
Afghanistan was “approximately 99,000,” of which approximately 83,000 are assigned to the Afghanistan was “approximately 99,000,” of which approximately 83,000 are assigned to the
International Security Assistance Force (ISAF) in Afghanistan. The United States International Security Assistance Force (ISAF) in Afghanistan. The United States ~~continues~~continued to pursue to pursue
and engage “remaining al-Qaida and Taliban fighters in Afghanistan.” The United States and engage “remaining al-Qaida and Taliban fighters in Afghanistan.” The United States ~~has~~had deployed deployed
various “combat-equipped forces” to a number of locations in the Central, Pacific, European, various “combat-equipped forces” to a number of locations in the Central, Pacific, European,
Southern and African Command areas of operation in support of anti-terrorist and anti-al-Qaida Southern and African Command areas of operation in support of anti-terrorist and anti-al-Qaida
actions. actions. ~~This includes the deployment of U.S. military forces globally to assist in enhancing the~~
~~counterterrorism capabilities of our friends and allies through maritime interception operations on~~
~~the high seas “aimed at stopping the movement, arming and financing of certain international terrorist~~
~~groups.”~~ A combat-equipped security force of about “40 U.S. military personnel from the U.S. Central A combat-equipped security force of about “40 U.S. military personnel from the U.S. Central
Command” was deployed to Cairo, Egypt, on January 31, 2011, for the sole purpose of “protecting Command” was deployed to Cairo, Egypt, on January 31, 2011, for the sole purpose of “protecting
American citizens and property.” That force American citizens and property.” That force ~~remains~~remained at the U.S. embassy in Cairo. The United States at the U.S. embassy in Cairo. The United States
~~also continues~~also continued to deploy military forces in Iraq to help it “maintain security and stability” there. These to deploy military forces in Iraq to help it “maintain security and stability” there. These
Iraqi operations continue pursuant to the terms of a bilateral agreement between the United States Iraqi operations continue pursuant to the terms of a bilateral agreement between the United States
and Iraq, which entered into force on January 1, 2009. The and Iraq, which entered into force on January 1, 2009. The ~~current~~ U.S. force level in IraqU.S. force level in Iraq is
, at the time, was “approximately 45,000 U.S. military personnel.” In Libya, since April 4, 2011, the United States “approximately 45,000 U.S. military personnel.” In Libya, since April 4, 2011, the United States ~~has~~
had transferred responsibility for military operations there to NATO, and U.S. involvement “has transferred responsibility for military operations there to NATO, and U.S. involvement “has assumed ~~assumed~~
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a supporting role in the coalition’s efforts.” U.S. support in Libya a supporting role in the coalition’s efforts.” U.S. support in Libya ~~has~~had been limited to “intelligence, been limited to “intelligence,
logistical support, and search and rescue assistance.” The U.S. military aircraft logistical support, and search and rescue assistance.” The U.S. military aircraft ~~have~~were also also ~~been~~ used to used to
assist in the “suppression and destruction of air defenses in support of the no-fly zone” over Libya. assist in the “suppression and destruction of air defenses in support of the no-fly zone” over Libya.
Since April 23, 2011, the United States has supported the coalition effort in Libya through use of Since April 23, 2011, the United States has supported the coalition effort in Libya through use of
“unmanned aerial vehicles against a limited set of clearly defined targets” there. Except in the case of “unmanned aerial vehicles against a limited set of clearly defined targets” there. Except in the case of
operations to “rescue the crew of a U.S. aircraft” on March 21, 2011, “the United States has operations to “rescue the crew of a U.S. aircraft” on March 21, 2011, “the United States has
deployed no ground forces to Libya.” U.S. military operations deployed no ground forces to Libya.” U.S. military operations ~~continue~~continued in Kosovo, as part of the in Kosovo, as part of the
NATO-led KFOR. NATO-led KFOR. ~~Presently~~At the time, the United States the United States ~~contributes~~contributed approximately 800 U.S. military personnel approximately 800 U.S. military personnel
to KFOR. to KFOR.
Libya. On March 21, 2011, the President submitted to Congress “consistent with the War Powers On March 21, 2011, the President submitted to Congress “consistent with the War Powers
Resolution,” a report stating that at “approximately 3:00 p.m. Eastern Daylight Time, on March 19, Resolution,” a report stating that at “approximately 3:00 p.m. Eastern Daylight Time, on March 19,
2011,” he had directed U.S. military forces to commence “operations to assist an international effort 2011,” he had directed U.S. military forces to commence “operations to assist an international effort
authorized by the United Nations (U.N.) Security Council and undertaken with the support of authorized by the United Nations (U.N.) Security Council and undertaken with the support of
European allies and Arab partners, to prevent a humanitarian catastrophe and address the threat European allies and Arab partners, to prevent a humanitarian catastrophe and address the threat
posed to international peace and security by the crisis in Libya.” He further stated that U.S. military posed to international peace and security by the crisis in Libya.” He further stated that U.S. military
forces, “under the command of Commander, U.S. Africa Command (AFRICOM) began a series of forces, “under the command of Commander, U.S. Africa Command (AFRICOM) began a series of
strikes against air defense systems and military airfields for the purposes of preparing a no-fly zone.” strikes against air defense systems and military airfields for the purposes of preparing a no-fly zone.”
These actions were part of “the multilateral response authorized under U.N. Security Council These actions were part of “the multilateral response authorized under U.N. Security Council
Resolution 1973,” and the President added that “these strikes wil be limited in their nature, duration, Resolution 1973,” and the President added that “these strikes wil be limited in their nature, duration,
and scope. Their purpose and scope. Their purpose iswas to support an international coalition as it takes all necessary measures to to support an international coalition as it takes all necessary measures to
enforce the terms of U.N. Security Council Resolution 1973. These limited U.S. actions enforce the terms of U.N. Security Council Resolution 1973. These limited U.S. actions ~~wil~~ would set the set the
stage for further action by other coalition partners.” stage for further action by other coalition partners.”
The President noted that United Nations Security Council Resolution 1973 authorized Member The President noted that United Nations Security Council Resolution 1973 authorized Member
States, under Chapter VII of the U.N. Charter, to take all necessary measures to protect civilians and States, under Chapter VII of the U.N. Charter, to take all necessary measures to protect civilians and
civilian populated areas under threat of attack in Libya, including the establishment and enforcement civilian populated areas under threat of attack in Libya, including the establishment and enforcement
of a “no-fly zone” in the airspace of Libya. United States military efforts of a “no-fly zone” in the airspace of Libya. United States military efforts ~~are~~were discrete and focused on discrete and focused on
employing unique U.S. military capabilities to set the conditions for employing unique U.S. military capabilities to set the conditions for ~~our~~ European allies and Arab European allies and Arab
partners to carry out the measures authorized by the U.N. Security Council Resolution. partners to carry out the measures authorized by the U.N. Security Council Resolution.
The President stated further that the “United States has not deployed ground forces into Libya. The President stated further that the “United States has not deployed ground forces into Libya.
United States forces are conducting a limited and well-defined mission in support of international United States forces are conducting a limited and well-defined mission in support of international
efforts to protect civilians and prevent a humanitarian disaster.” Accordingly, he added, “U.S. forces efforts to protect civilians and prevent a humanitarian disaster.” Accordingly, he added, “U.S. forces
have targeted the Qadhafi (Gaddafi) regime’s air defense systems, command and control structures, have targeted the Qadhafi (Gaddafi) regime’s air defense systems, command and control structures,
and other capabilities of Qadhafi’s armed forces used to attack civilians and civilian populated areas.” and other capabilities of Qadhafi’s armed forces used to attack civilians and civilian populated areas.”
It was the intent of the United States, he said, to “seek a rapid, but responsible, transition of It was the intent of the United States, he said, to “seek a rapid, but responsible, transition of
operations to coalition, regional, or international organizations that are postured to continue operations to coalition, regional, or international organizations that are postured to continue
activities as may be necessary to realize the objectives of U.N. Security Council Resolutions 1970 and activities as may be necessary to realize the objectives of U.N. Security Council Resolutions 1970 and
1973.” The President said that the actions he had directed were “in the national security and foreign 1973.” The President said that the actions he had directed were “in the national security and foreign
policy interests of the United States.” He took them, the President stated, “pursuant to my policy interests of the United States.” He took them, the President stated, “pursuant to my
constitutional authority to conduct U.S. foreign relations and as Commander in Chief and Chief constitutional authority to conduct U.S. foreign relations and as Commander in Chief and Chief
Executive.” Executive.”
Congressional Research Service 27 Instances of Use of United States Armed Forces Abroad, 1798-2023 Central Africa. On October 14, 2011, the President submitted to Congress, “consistent with the War . On October 14, 2011, the President submitted to Congress, “consistent with the War
Powers Resolution,” a report stating that “he had authorized a small number of combat-equipped U.S. Powers Resolution,” a report stating that “he had authorized a small number of combat-equipped U.S.
forces to deploy to central Africa to provide assistance to regional forces that are working toward forces to deploy to central Africa to provide assistance to regional forces that are working toward
the removal of Joseph Kony,” leader of the Lord’s Resistance Army (LRA), from the battlefield. For the removal of Joseph Kony,” leader of the Lord’s Resistance Army (LRA), from the battlefield. For
over two decades the LRA has murdered, kidnapped, and raped tens of thousands of men, women, over two decades the LRA has murdered, kidnapped, and raped tens of thousands of men, women,
and children throughout central Africa, and has continued to commit atrocities in South Sudan, the and children throughout central Africa, and has continued to commit atrocities in South Sudan, the
Democratic Republic of the Congo, and the Central African Republic. The U.S. Armed Forces, the Democratic Republic of the Congo, and the Central African Republic. The U.S. Armed Forces, the
President noted, would be a “significant contribution toward counter-LRA efforts in central Africa.” President noted, would be a “significant contribution toward counter-LRA efforts in central Africa.”
The President stated that on “October 12, 2011, the initial team of U.S. military personnel with The President stated that on “October 12, 2011, the initial team of U.S. military personnel with
appropriate combat equipment deployed to Uganda.” In the “next month, additional forces wil appropriate combat equipment deployed to Uganda.” In the “next month, additional forces wil
deploy, including a second combat-equipped team and associated headquarters, communications, and deploy, including a second combat-equipped team and associated headquarters, communications, and
logistics personnel.” The President further stated that the “total number of U.S. military personnel logistics personnel.” The President further stated that the “total number of U.S. military personnel
deploying for this mission is approximately 100. These forces deploying for this mission is approximately 100. These forces ~~wil~~ would act as advisors to partner forces act as advisors to partner forces
that have the goals of removing from the battlefield Joseph Kony and other senior leadership of the that have the goals of removing from the battlefield Joseph Kony and other senior leadership of the
LRA.” U.S. forces “wil provide information, advice, and assistance to select partner nation forces.” LRA.” U.S. forces “wil provide information, advice, and assistance to select partner nation forces.”
With the approval of the respective host nations, “elements of these U.S. forces wil deploy into With the approval of the respective host nations, “elements of these U.S. forces wil deploy into
Uganda, South Sudan, the Central African Republic, and the Democratic Republic of the Congo. The Uganda, South Sudan, the Central African Republic, and the Democratic Republic of the Congo. The
support provided by U.S. forces wil enhance regional efforts against the LRA.” The President support provided by U.S. forces wil enhance regional efforts against the LRA.” The President
emphasized that even though the “U.S. forces are combat-equipped, they wil only be providing emphasized that even though the “U.S. forces are combat-equipped, they wil only be providing
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information, advice, and assistance to partner nation forces, and they wil not themselves engage LRA information, advice, and assistance to partner nation forces, and they wil not themselves engage LRA
forces unless necessary for self-defense. All appropriate precautions have been taken to ensure the forces unless necessary for self-defense. All appropriate precautions have been taken to ensure the
safety of U.S. military personnel during their deployment.” The President took note in his report that safety of U.S. military personnel during their deployment.” The President took note in his report that
Congress had previously “expressed support for increased, comprehensive U.S. efforts to help Congress had previously “expressed support for increased, comprehensive U.S. efforts to help
mitigate and eliminate the threat posed by the LRA to civilians and regional stability” through the mitigate and eliminate the threat posed by the LRA to civilians and regional stability” through the
passage of the Lord’s Resistance Army Disarmament and Northern Uganda Recovery Act of 2009, passage of the Lord’s Resistance Army Disarmament and Northern Uganda Recovery Act of 2009,
P.L. 111-172, enacted May 24, 2010. P.L. 111-172, enacted May 24, 2010.
Terrorism threat/Afghanistan/Libya/Iraq/Kosovo. On December 15, 2011, the President submitted to On December 15, 2011, the President submitted to
Congress, “consistent with the War Powers Resolution,” a supplemental consolidated report, giving Congress, “consistent with the War Powers Resolution,” a supplemental consolidated report, giving
details of “deployments of U.S. Armed Forces equipped for combat.” The report detailed ongoing details of “deployments of U.S. Armed Forces equipped for combat.” The report detailed ongoing
U.S. contingency operations overseas. The report noted that the total number of U.S. forces in U.S. contingency operations overseas. The report noted that the total number of U.S. forces in
Afghanistan was “approximately 93,000,” of which approximately 78,000 are assigned to the Afghanistan was “approximately 93,000,” of which approximately 78,000 are assigned to the
International Security Assistance Force (ISAF) in Afghanistan. The United States International Security Assistance Force (ISAF) in Afghanistan. The United States ~~continues~~continued to pursue to pursue
and engage “remaining al-Qaida and Taliban fighters in Afghanistan.” The United States and engage “remaining al-Qaida and Taliban fighters in Afghanistan.” The United States ~~has~~had deployed deployed
various “combat-equipped forces” to a number of locations in the Central, Pacific, European, various “combat-equipped forces” to a number of locations in the Central, Pacific, European,
Southern, and African Command areas of operation in support of anti-terrorist and anti-al-Qaida Southern, and African Command areas of operation in support of anti-terrorist and anti-al-Qaida
actions. This actions. This ~~includes~~included the deployment of U.S. military forces globally: “including special operations and the deployment of U.S. military forces globally: “including special operations and
other forces” for “sensitive operations” in various places, as well as forces to other forces” for “sensitive operations” in various places, as well as forces to “assist in enhancing the assist in enhancing the
counterterrorism capabilities of counterterrorism capabilities of ~~our friends and allies.~~allies.” U.S. forces also U.S. forces also ~~have~~had engaged in maritime engaged in maritime
interception operations on the high seas “aimed at stopping the movement, arming and financing of interception operations on the high seas “aimed at stopping the movement, arming and financing of
certain international terrorist groups.” The United States continued to deploy military forces in Iraq certain international terrorist groups.” The United States continued to deploy military forces in Iraq
to help it “maintain security and stability” there. These Iraqi operations were undertaken pursuant to to help it “maintain security and stability” there. These Iraqi operations were undertaken pursuant to
the terms of a bilateral agreement between the United States and Iraq, which entered into force on the terms of a bilateral agreement between the United States and Iraq, which entered into force on
January 1, 2009. The U.S. force level in Iraq on October 28, 2011, was “36,001 U.S. military January 1, 2009. The U.S. force level in Iraq on October 28, 2011, was “36,001 U.S. military
personnel.” The United States was committed to withdraw U.S. forces from Iraq by December 31, personnel.” The United States was committed to withdraw U.S. forces from Iraq by December 31,
2011. (This occurred, as scheduled, after this report was submitted.) In Libya, after April 4, 2011, the 2011. (This occurred, as scheduled, after this report was submitted.) In Libya, after April 4, 2011, the
United States transferred responsibility for military operations there to NATO, and U.S. involvement United States transferred responsibility for military operations there to NATO, and U.S. involvement
“assumed a supporting role in the coalition’s efforts.” U.S. support in Libya was limited to “assumed a supporting role in the coalition’s efforts.” U.S. support in Libya was limited to
“intelligence, logistical support, and search and rescue assistance.” The U.S. military aircraft were also “intelligence, logistical support, and search and rescue assistance.” The U.S. military aircraft were also
used to assist in the “suppression and destruction of air defenses in support of the no-fly zone” over used to assist in the “suppression and destruction of air defenses in support of the no-fly zone” over
Libya. After April 23, 2011, the United States supported the coalition effort in Libya through use of Libya. After April 23, 2011, the United States supported the coalition effort in Libya through use of
“unmanned aerial vehicles against a limited set of clearly defined targets” there. Except in the case of “unmanned aerial vehicles against a limited set of clearly defined targets” there. Except in the case of
operations to “rescue the crew of a U.S. aircraft” on March 21, 2011, and deploying 16 U.S. military operations to “rescue the crew of a U.S. aircraft” on March 21, 2011, and deploying 16 U.S. military
personnel to aid in re-establishing the U.S. embassy in Tripoli in September 2011, “the U.S. deployed personnel to aid in re-establishing the U.S. embassy in Tripoli in September 2011, “the U.S. deployed
no ground forces to Libya.” On October 27, 2011, the United Nations terminated the “no-fly zone” no ground forces to Libya.” On October 27, 2011, the United Nations terminated the “no-fly zone”
effective October 31, 2011. NATO terminated its mission during this same time. U.S. military effective October 31, 2011. NATO terminated its mission during this same time. U.S. military
operations continue in Kosovo, as part of the NATO-led KFOR. Presently the United States operations continue in Kosovo, as part of the NATO-led KFOR. Presently the United States
contributes approximately 800 U.S. military personnel to KFOR. contributes approximately 800 U.S. military personnel to KFOR.
2012 2012
Somalia. On January 26, 2012, On January 26, 2012, ~~the President~~President Obama submitted to Congress, “consistent with the War Powers submitted to Congress, “consistent with the War Powers
Resolution,” a report detailing a successful U.S. Special Operations Forces operation in Resolution,” a report detailing a successful U.S. Special Operations Forces operation in Congressional Research Service 28 Instances of Use of United States Armed Forces Abroad, 1798-2023 Somalia of Somalia of
January 24, 2012, to rescue Ms. Jessica Buchanan, a U.S. citizen who had been kidnapped by a group January 24, 2012, to rescue Ms. Jessica Buchanan, a U.S. citizen who had been kidnapped by a group
linked to Somali pirates and financiers. This operation was undertaken “by a small number of joint linked to Somali pirates and financiers. This operation was undertaken “by a small number of joint
combat-equipped U.S. forces” fol owing receipt of reliable intelligence establishing her location in combat-equipped U.S. forces” fol owing receipt of reliable intelligence establishing her location in
Somalia. A Danish national, Poul Hagen Thisted, kidnapped with Ms. Buchanan, was also rescued. Somalia. A Danish national, Poul Hagen Thisted, kidnapped with Ms. Buchanan, was also rescued.
Terrorism threat/Afghanistan/Somalia/Yemen/Central Africa/Kosovo. On June 15, 2012, the President On June 15, 2012, the President
reported to Congress “consistent with” the War Powers Resolution, a consolidated report regarding reported to Congress “consistent with” the War Powers Resolution, a consolidated report regarding
various deployments of U.S. Armed Forces equipped for combat. In the efforts in support of U.S. various deployments of U.S. Armed Forces equipped for combat. In the efforts in support of U.S.
counterterrorism (CT) objectives against al-Qaida, the Taliban and, associated forces, he noted that counterterrorism (CT) objectives against al-Qaida, the Taliban and, associated forces, he noted that
U.S. forces engaged in Afghanistan in the above effort were “approximately 90,000.” With regard to U.S. forces engaged in Afghanistan in the above effort were “approximately 90,000.” With regard to
other counter-terrorism operations, the President stated that the United States had deployed “U.S. other counter-terrorism operations, the President stated that the United States had deployed “U.S.
combat-equipped forces to assist in enhancing the CT capabilities of our friends and allies including combat-equipped forces to assist in enhancing the CT capabilities of our friends and allies including
special operations and other forces for sensitive operations in various locations around the world.” special operations and other forces for sensitive operations in various locations around the world.”
He noted that the “U.S. military has taken direct action in Somalia against members of al-Qaida, He noted that the “U.S. military has taken direct action in Somalia against members of al-Qaida,
including those who are also members of al-Shabaab, who are engaged in efforts to carry out terrorist including those who are also members of al-Shabaab, who are engaged in efforts to carry out terrorist
attacks against the United States and our interests.” The President further stated that the U.S. attacks against the United States and our interests.” The President further stated that the U.S.
military had been “working closely with the Yemeni government to operationally and ultimately military had been “working closely with the Yemeni government to operationally and ultimately
eliminate the terrorist threat posed by al-Qaida in the Arabian Peninsula (AQAP), the most active and eliminate the terrorist threat posed by al-Qaida in the Arabian Peninsula (AQAP), the most active and
dangerous affiliate of al-Qaida today.” He added that these “joint efforts have resulted in direct action dangerous affiliate of al-Qaida today.” He added that these “joint efforts have resulted in direct action
against a limited number of AQAP operatives and senior leaders in that country who posed a against a limited number of AQAP operatives and senior leaders in that country who posed a
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terrorist threat to the United States and our interests.” The President noted that he would direct terrorist threat to the United States and our interests.” The President noted that he would direct
“additional measures against al-Qaida, the Taliban, and associated forces to protect U.S. citizens and “additional measures against al-Qaida, the Taliban, and associated forces to protect U.S. citizens and
interests.” Further information on such matters interests.” Further information on such matters iswas provided in a “classified annex to this report.” provided in a “classified annex to this report.”
Other military operations reported by the President include the “deployment of U.S. combat-Other military operations reported by the President include the “deployment of U.S. combat-
equipped military personnel to Uganda to serve as advisors to regional forces that are working to equipped military personnel to Uganda to serve as advisors to regional forces that are working to
apprehend or remove Joseph Kony and other senior Lord’s Resistance Army (LRA) leaders from the apprehend or remove Joseph Kony and other senior Lord’s Resistance Army (LRA) leaders from the
battlefield and to protect local populations.” The total number of U.S. military personnel deployed for battlefield and to protect local populations.” The total number of U.S. military personnel deployed for
this mission this mission iswas “approximately 90,” and elements of these U.S. forces have been sent to “forward “approximately 90,” and elements of these U.S. forces have been sent to “forward
locations in the LRA-affected areas of the Republic of South Sudan, the Democratic Republic of the locations in the LRA-affected areas of the Republic of South Sudan, the Democratic Republic of the
Congo, and the Central African Republic.” These U.S. forces “wil not engage LRA forces except in Congo, and the Central African Republic.” These U.S. forces “wil not engage LRA forces except in
self-defense.” The President also reported that presently the United States was contributing self-defense.” The President also reported that presently the United States was contributing
approximately 817 military personnel to the NATO-led KFOR in Kosovo. He also reported that the approximately 817 military personnel to the NATO-led KFOR in Kosovo. He also reported that the
United States remained prepared to engage in “maritime interception operations” intended to stop United States remained prepared to engage in “maritime interception operations” intended to stop
the “movement, arming, and financing of certain international terrorist groups,” as well as stopping the “movement, arming, and financing of certain international terrorist groups,” as well as stopping
“proliferation by sea of weapons of mass destruction and related materials.” Additional details about “proliferation by sea of weapons of mass destruction and related materials.” Additional details about
these efforts are included in “the classified annex” to this report. these efforts are included in “the classified annex” to this report.
Libya/Yemen. On September 14, 2012, the President reported to Congress, “consistent with” the War On September 14, 2012, the President reported to Congress, “consistent with” the War
Powers Resolution, that on September 12, 2012, he ordered deployed to Libya “a security force from Powers Resolution, that on September 12, 2012, he ordered deployed to Libya “a security force from
the U.S. Africa Command” to “support the security of U.S. personnel in Libya.” This action was taken the U.S. Africa Command” to “support the security of U.S. personnel in Libya.” This action was taken
in response to the attack on the U.S. “diplomatic post in Benghazi, Libya,” that had kil ed four in response to the attack on the U.S. “diplomatic post in Benghazi, Libya,” that had kil ed four
America citizens, including U.S. Ambassador John Christopher Stevens. The President added on America citizens, including U.S. Ambassador John Christopher Stevens. The President added on
September 13, 2012, that “an additional security force arrived in Yemen in response to security September 13, 2012, that “an additional security force arrived in Yemen in response to security
threats there.” He further stated that: “Although these security forces are equipped for combat, threats there.” He further stated that: “Although these security forces are equipped for combat,
these movements have been undertaken solely for the purpose of protecting American citizens and these movements have been undertaken solely for the purpose of protecting American citizens and
property.” These security forces property.” These security forces ~~wil~~ would remain in Libya and in Yemen, he noted, “until the security remain in Libya and in Yemen, he noted, “until the security
situation becomes such that they are no longer needed.” situation becomes such that they are no longer needed.”
Southern Philippines Humanitarian Assistance for Typhoon Bopha. On December 17, 2012, U.S. Pacific . On December 17, 2012, U.S. Pacific
Command (PACOM) reported all DOD humanitarian assistance and military-to-military search and Command (PACOM) reported all DOD humanitarian assistance and military-to-military search and
rescue assistance had been completed in the southeastern Philippines fol owing Typhoon Bopha. rescue assistance had been completed in the southeastern Philippines fol owing Typhoon Bopha.
According to Pentagon Press Secretary George Little at the time, “U.S. forces provided planning, According to Pentagon Press Secretary George Little at the time, “U.S. forces provided planning,
coordination, personnel, water purification teams, and aircraft assets that flew 24 sorties to deliver coordination, personnel, water purification teams, and aircraft assets that flew 24 sorties to deliver
756,800 pounds of relief supplies, flew 56 hours in support of search and rescue operations and 756,800 pounds of relief supplies, flew 56 hours in support of search and rescue operations and
provided 60 hours of search and rescue coverage. PACOM forces are returning back to their home provided 60 hours of search and rescue coverage. PACOM forces are returning back to their home
stations or are proceeding to fol ow-on taskings.” stations or are proceeding to fol ow-on taskings.”
2013 2013
Afghanistan. On January 31, 2013, DOD identified three major units to deploy as part of the ongoing . On January 31, 2013, DOD identified three major units to deploy as part of the ongoing
rotation of forces operating in Afghanistan. The scheduled rotation involved one Infantry Brigade rotation of forces operating in Afghanistan. The scheduled rotation involved one Infantry Brigade
Combat Team (IBCT) with roughly 2,250 personnel from the 4th Infantry Brigade Combat Team, 3rd Combat Team (IBCT) with roughly 2,250 personnel from the 4th Infantry Brigade Combat Team, 3rd
Infantry Division, Fort Stewart, Georgia; a Combat Aviation Brigade (CAB) with roughly 2,200 Infantry Division, Fort Stewart, Georgia; a Combat Aviation Brigade (CAB) with roughly 2,200
personnel from the 10th Combat Aviation Brigade, 10th Mountain Division, Fort Drum, New York; personnel from the 10th Combat Aviation Brigade, 10th Mountain Division, Fort Drum, New York;
Congressional Research Service 29 Instances of Use of United States Armed Forces Abroad, 1798-2023 and a corps headquarters with roughly 500 personnel from the III Corps Headquarters, Fort Hood, and a corps headquarters with roughly 500 personnel from the III Corps Headquarters, Fort Hood,
Texas, in spring 2013. Texas, in spring 2013.
Niger. On February 22, 2013, On February 22, 2013, ~~the President~~President Obama reported in a letter dated February 20 to congressional reported in a letter dated February 20 to congressional
leaders that “the last 40 of the approximately 100 military personnel had arrived in Niger and were leaders that “the last 40 of the approximately 100 military personnel had arrived in Niger and were
deployed with weapons for the purpose of providing their own force protection and security.” deployed with weapons for the purpose of providing their own force protection and security.”
President Obama further stated, “This deployment wil provide support for intelligence col ection and President Obama further stated, “This deployment wil provide support for intelligence col ection and
wil also facilitate intelligence sharing with French forces conducting operations in Mali, and with other wil also facilitate intelligence sharing with French forces conducting operations in Mali, and with other
partners in the region.” partners in the region.”
Afghanistan. On April 10, 2013, DOD identified four major units to deploy as part of the upcoming . On April 10, 2013, DOD identified four major units to deploy as part of the upcoming
rotation of forces operating in Afghanistan. The scheduled rotationrotation of forces operating in Afghanistan. The scheduled rotation ~~is ongoing and involves~~ one one
cavalry regiment, the 2nd Cavalry Regiment from Vilseck, Germany, with roughly 3,000 personnel; one cavalry regiment, the 2nd Cavalry Regiment from Vilseck, Germany, with roughly 3,000 personnel; one
armored brigade combat team (ABCT) with roughly 3,200 personnel from the 2nd Armored Brigade armored brigade combat team (ABCT) with roughly 3,200 personnel from the 2nd Armored Brigade
Combat Team, 1st Cavalry Division, Fort Hood, Texas; one infantry brigade combat team (IBCT) with Combat Team, 1st Cavalry Division, Fort Hood, Texas; one infantry brigade combat team (IBCT) with
roughly 2,200 personnel from the 3rd Infantry Brigade Combat Team, 1st Infantry Division, Fort Knox, roughly 2,200 personnel from the 3rd Infantry Brigade Combat Team, 1st Infantry Division, Fort Knox,
Kentucky; and a division headquarters with roughly 450 personnel from the 4th Infantry Division Kentucky; and a division headquarters with roughly 450 personnel from the 4th Infantry Division
Headquarters, Fort Carson, Colorado, to rotate in summer 2013. Headquarters, Fort Carson, Colorado, to rotate in summer 2013.
Jordan. Defense Secretary Chuck Hagel ordered the deployment of more American troops to Jordan. . Defense Secretary Chuck Hagel ordered the deployment of more American troops to Jordan.
He announced the deployment on April 17, 2013, in a statement on Syria before the Senate Armed He announced the deployment on April 17, 2013, in a statement on Syria before the Senate Armed
Services Committee. He said that U.S. troops Services Committee. He said that U.S. troops ~~wil~~ would work alongside Jordanian forces to “improve work alongside Jordanian forces to “improve
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readiness and prepare for a number of scenarios.” The troops, which number up to 200, readiness and prepare for a number of scenarios.” The troops, which number up to 200, ~~are~~ would be from the from the
headquarters of the 1st Armored Division at Fort Bliss, Texas, according to DOD sources. headquarters of the 1st Armored Division at Fort Bliss, Texas, according to DOD sources.
Terrorism threat/Afghanistan/Somalia/Yemen/Central Africa. On June 14, 2013, President Obama sent . On June 14, 2013, President Obama sent
Congress a letter “consistent with” the War Powers Resolution, on U.S. military operations against Congress a letter “consistent with” the War Powers Resolution, on U.S. military operations against
al-Qaida, the Taliban, and associated forces, and in support of related U.S. counterterrorism al-Qaida, the Taliban, and associated forces, and in support of related U.S. counterterrorism
objectives in Afghanistan and elsewhere. There objectives in Afghanistan and elsewhere. There ~~are~~were approximately 62,000 U.S. forces in Afghanistan of approximately 62,000 U.S. forces in Afghanistan of
which 49,000 of these forces which 49,000 of these forces ~~are~~were assigned to the NATO-led International Security Assistance assigned to the NATO-led International Security Assistance Force Force
(ISAF). Further directed reduction of forces (ISAF). Further directed reduction of forces ~~wil~~ were to continue to the 34,000 level by February 12, 2014. continue to the 34,000 level by February 12, 2014.
Jordan. President Obama sent Congress a letter on June 21, 2013, regarding a combat-equipped . President Obama sent Congress a letter on June 21, 2013, regarding a combat-equipped
detachment of 700 U.S. troops remaining in Jordan fol owing training exercises that ended on June 20. detachment of 700 U.S. troops remaining in Jordan fol owing training exercises that ended on June 20.
This was at the request of the government of Jordan and in furtherance of U.S. national security and This was at the request of the government of Jordan and in furtherance of U.S. national security and
foreign policy interests. foreign policy interests.
Afghanistan. On July 11, 2013, DOD identified three units to deploy as part of the upcoming rotation . On July 11, 2013, DOD identified three units to deploy as part of the upcoming rotation
of forces in Afghanistan. The scheduled rotation of forces in Afghanistan. The scheduled rotation ~~involves~~involved elements of one infantry brigade combat elements of one infantry brigade combat
team (IBCT) with roughly 2,000 personnel; and elements of two combat aviation brigades, one with team (IBCT) with roughly 2,000 personnel; and elements of two combat aviation brigades, one with
roughly 1,450 personnel and one with roughly 2,100 personnel, to rotate in Fall 2013 in support of roughly 1,450 personnel and one with roughly 2,100 personnel, to rotate in Fall 2013 in support of
the combatant commander’s mission requirements. The deploying units include the 3rd Infantry the combatant commander’s mission requirements. The deploying units include the 3rd Infantry
Brigade Combat Team, 10th Mountain Division, Fort Drum, New York; the 1st Cavalry Division Brigade Combat Team, 10th Mountain Division, Fort Drum, New York; the 1st Cavalry Division
Combat Aviation Brigade, Fort Hood, Texas; and the 1st Infantry Division Combat Aviation Brigade, Combat Aviation Brigade, Fort Hood, Texas; and the 1st Infantry Division Combat Aviation Brigade,
Fort Riley, Kansas. Fort Riley, Kansas.
Afghanistan. On September 24, 2013, DOD identified six units to deploy as part of the upcoming . On September 24, 2013, DOD identified six units to deploy as part of the upcoming
rotation of forces operating in Afghanistanrotation of forces operating in Afghanistan. The scheduled rotation The scheduled rotation ~~involves~~involved elements of two infantry elements of two infantry
brigade combat teams (IBCT)—one with roughly 1,830 personnel (4th Infantry Brigade Combat Team, brigade combat teams (IBCT)—one with roughly 1,830 personnel (4th Infantry Brigade Combat Team,
4th Infantry Division) and one with roughly 2,000 personnel (2nd Brigade Combat Team, 101st 4th Infantry Division) and one with roughly 2,000 personnel (2nd Brigade Combat Team, 101st
Airborne Division); elements of one armored brigade combat team (ABCT) with roughly 1,160 Airborne Division); elements of one armored brigade combat team (ABCT) with roughly 1,160
personnel (3rd Armored Brigade Combat Team, 1st Armored Division); elements of one combat personnel (3rd Armored Brigade Combat Team, 1st Armored Division); elements of one combat
aviation brigade with roughly 1,800 personnel (159th Combat Aviation Brigade, 101st Airborne aviation brigade with roughly 1,800 personnel (159th Combat Aviation Brigade, 101st Airborne
Division); a division headquarters element with roughly 630 personnel (10th Mountain Division Division); a division headquarters element with roughly 630 personnel (10th Mountain Division
Headquarters); and a corps headquarters element with roughly 560 personnel (XVIII Airborne Corps Headquarters); and a corps headquarters element with roughly 560 personnel (XVIII Airborne Corps
Headquarters) to rotate in winter 2013-2014 in support of the combatant commander’s mission Headquarters) to rotate in winter 2013-2014 in support of the combatant commander’s mission
requirements. The deploying units include Brigade Combat Teams/Combat Aviation Brigades: 2nd requirements. The deploying units include Brigade Combat Teams/Combat Aviation Brigades: 2nd
Brigade Combat Team, 101st Airborne Division, Fort Campbell, KY; 4th Infantry Brigade Combat Brigade Combat Team, 101st Airborne Division, Fort Campbell, KY; 4th Infantry Brigade Combat
Team, 4th Infantry Division, Fort Carson, CO; 3rd Armored Brigade Combat Team, 1st Armored Team, 4th Infantry Division, Fort Carson, CO; 3rd Armored Brigade Combat Team, 1st Armored
Division, Fort Bliss, TX; and 159th Combat Aviation Brigade, 101st Airborne Division, Fort Campbell, Division, Fort Bliss, TX; and 159th Combat Aviation Brigade, 101st Airborne Division, Fort Campbell,
KY; Division Headquarters: 10th Mountain Division Headquarters, Fort Drum, NY; and Corps KY; Division Headquarters: 10th Mountain Division Headquarters, Fort Drum, NY; and Corps
Headquarters: XVIII Airborne Corps Headquarters, Fort Bragg, NC. Headquarters: XVIII Airborne Corps Headquarters, Fort Bragg, NC.
Leyte, Philippines Humanitarian Assistance for Typhoon Haiyan. On November 9, 2013, the Defense On November 9, 2013, the Defense
Secretary directed the U.S. Pacific Command to support humanitarian relief operations in the Secretary directed the U.S. Pacific Command to support humanitarian relief operations in the
Congressional Research Service 30 Instances of Use of United States Armed Forces Abroad, 1798-2023 Philippines after Typhoon Haiyan (Yolanda). The aircraft carrier USSPhilippines after Typhoon Haiyan (Yolanda). The aircraft carrier USS George Washington (CVN 73) and (CVN 73) and
other U.S. Navy ships were ordered to the Philippines. The aircraft carrier, which carries 5,000 other U.S. Navy ships were ordered to the Philippines. The aircraft carrier, which carries 5,000
sailors and more than 80 aircraft, was in Hong Kong for a port visit. In addition to the carrier were sailors and more than 80 aircraft, was in Hong Kong for a port visit. In addition to the carrier were
the cruisers USSthe cruisers USS Antietam (CG 54) and USS (CG 54) and USS Cowpens (CG 63), the destroyers USS (CG 63), the destroyers USS Mustin (DDG 89) (DDG 89)
and USSand USS Lassen (DDG 82), and the supply ship USNS (DDG 82), and the supply ship USNS Charles Drew (T-AKE-10). Embarked on board (T-AKE-10). Embarked on board
the USS the USS George Washington was Carrier Air Wing Five (CVW-5), a col ection of aircraft designed to was Carrier Air Wing Five (CVW-5), a col ection of aircraft designed to
perform various functions including disaster relief. Included were the “Golden Falcons” of Helicopter perform various functions including disaster relief. Included were the “Golden Falcons” of Helicopter
Sea Combat Squadron 12 flying the MH-60S Seahawk and the “Saberhawks” of Helicopter Maritime Sea Combat Squadron 12 flying the MH-60S Seahawk and the “Saberhawks” of Helicopter Maritime
Strike Squadron 77 flying the MH-60R Seahawk. See CRS Report R43309, Strike Squadron 77 flying the MH-60R Seahawk. See CRS Report R43309, Typhoon Haiyan (Yolanda):
U.S. and International Response to Philippines Disaster, coordinated by Thomas Lum and Rhoda , coordinated by Thomas Lum and Rhoda
Margesson, for more information about U.S. relief efforts. Margesson, for more information about U.S. relief efforts.
Burundi and Central African Republic. A small U.S. Air Force support team and two C-17 Globemaster . A small U.S. Air Force support team and two C-17 Globemaster
III aircraft began airlift operations on December 12, 2013, in response to a French request for airlift III aircraft began airlift operations on December 12, 2013, in response to a French request for airlift
support. The U.S. airmen conducted 16 flights from Burundi to the Central African Republic support. The U.S. airmen conducted 16 flights from Burundi to the Central African Republic
transporting 857 Burundian troops, 73 pallets of equipment, and 18 Burundian military vehicles. transporting 857 Burundian troops, 73 pallets of equipment, and 18 Burundian military vehicles.
Fewer than 10 Americans remained on the ground serving as liaisons with the French military when Fewer than 10 Americans remained on the ground serving as liaisons with the French military when
operations were completed on December 30, 2013. operations were completed on December 30, 2013.
Afghanistan. On December 13, 2013, DOD identified five units to deploy as part of the upcoming . On December 13, 2013, DOD identified five units to deploy as part of the upcoming
rotation of forces operating in Afghanistan. The scheduled rotation rotation of forces operating in Afghanistan. The scheduled rotation ~~involves~~involved elements of one infantry elements of one infantry
brigade combat team (IBCT) with roughly 3,200 personnel (1st Brigade, 82nd Airborne Division); brigade combat team (IBCT) with roughly 3,200 personnel (1st Brigade, 82nd Airborne Division);
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

elements of one cavalry regiment (CR) with roughly 2,050 personnel (3rd Cavalry Regiment); elements elements of one cavalry regiment (CR) with roughly 2,050 personnel (3rd Cavalry Regiment); elements
of two combat aviation brigades—one with roughly 1,700 personnel and the other with roughly 1,000 of two combat aviation brigades—one with roughly 1,700 personnel and the other with roughly 1,000
personnel (16th Combat Aviation Brigade and 12th Combat Aviation Brigade), and a division personnel (16th Combat Aviation Brigade and 12th Combat Aviation Brigade), and a division
headquarters element with roughly 350 personnel (1st Cavalry Division Headquarters) to rotate in headquarters element with roughly 350 personnel (1st Cavalry Division Headquarters) to rotate in
spring 2014 in support of the combatant commander’s mission requirements. The deploying units spring 2014 in support of the combatant commander’s mission requirements. The deploying units
include Brigade Combat Teams/Combat Aviation Brigades: 1st Brigade, 82nd Airborne Division, Fort include Brigade Combat Teams/Combat Aviation Brigades: 1st Brigade, 82nd Airborne Division, Fort
Bragg, NC; 3rd Cavalry Regiment, Fort Hood, TX; 16th Combat Aviation Brigade, Joint Base Lewis-Bragg, NC; 3rd Cavalry Regiment, Fort Hood, TX; 16th Combat Aviation Brigade, Joint Base Lewis-
McChord, WA; and 12th Combat Aviation Brigade, Ansbach, Germany, and Division Headquarters: 1st McChord, WA; and 12th Combat Aviation Brigade, Ansbach, Germany, and Division Headquarters: 1st
Cavalry Division Headquarters, Fort Hood, TX. See CRS Report RL30588, Cavalry Division Headquarters, Fort Hood, TX. See CRS Report RL30588, Afghanistan: Post-Taliban
Governance, Security, and U.S. Policy, for more information. , for more information.
South Sudan. On December 18, 2013, at the request of the U.S. State Department, DOD directed . On December 18, 2013, at the request of the U.S. State Department, DOD directed
two U.S. C-130 aircraft to evacuate 120 personnel from the embassy in Juba, the capital of South two U.S. C-130 aircraft to evacuate 120 personnel from the embassy in Juba, the capital of South
Sudan, to Nairobi, Kenya. In President Obama’s report to Congress on December 19, 2013, he Sudan, to Nairobi, Kenya. In President Obama’s report to Congress on December 19, 2013, he
provided information on the deployment of U.S. forces to support the security of U.S. citizens and provided information on the deployment of U.S. forces to support the security of U.S. citizens and
personnel at the U.S. embassy in South Sudan consistent with the War Powers Resolution (P.L. 93-personnel at the U.S. embassy in South Sudan consistent with the War Powers Resolution (P.L. 93-
148). On December 21, 2013, 46 additional U.S. military personnel deployed by military aircraft to 148). On December 21, 2013, 46 additional U.S. military personnel deployed by military aircraft to
the area of Bor, South Sudan, to conduct an operation to evacuate U.S. citizens and personnel. After the area of Bor, South Sudan, to conduct an operation to evacuate U.S. citizens and personnel. After
the aircraft came under fire, the operation was curtailed due to security considerations and the the aircraft came under fire, the operation was curtailed due to security considerations and the
aircraft and all military personnel onboard departed without completing the evacuation. See CRS aircraft and all military personnel onboard departed without completing the evacuation. See CRS
Report R43344, Report R43344, Conflict in South Sudan and the Challenges Ahead. .
2014 2014
South Korea. On January 7, 2014On January 7, 2014, DOD announced the rotational deployment of the U.S. Army’s 1st DOD announced the rotational deployment of the U.S. Army’s 1st
Battalion, 12th Cavalry Regiment, 1st U.S. Cavalry Division from Fort Hood, TX, to Camps Hovey and Battalion, 12th Cavalry Regiment, 1st U.S. Cavalry Division from Fort Hood, TX, to Camps Hovey and
Stanley, Republic of Korea, on February 1, 2014Stanley, Republic of Korea, on February 1, 2014~~. Comprised of~~, comprising approximately 800 soldiers. ~~approximately 800 soldiers, this~~
~~combined arms battalion wil deploy to conduct operations in support of U.S. Forces Korea and the~~
~~Eighth Army. This action supports the U.S defense commitment to the Republic of Korea as specified~~
~~by the mutual defense treaty and presidential agreements.~~
Uganda, South Sudan, the Democratic Republic of the Congo, and the Central African Republic. President . President
Obama announced on March 23, 2014, the deployment of U.S. aircraft, aircrews, and support Obama announced on March 23, 2014, the deployment of U.S. aircraft, aircrews, and support
personnel to central Africa. The total number of U.S. military personnel deployed for this mission personnel to central Africa. The total number of U.S. military personnel deployed for this mission iswas
about 280 and may increase to as many as 300. According to the president’s letter to Congress, “The about 280 and may increase to as many as 300. According to the president’s letter to Congress, “The
aircraft and personnel providing the enhanced air mobility support wil deploy to the Lord’s aircraft and personnel providing the enhanced air mobility support wil deploy to the Lord’s
Resistance Army-affected areas of central Africa episodically, as they are available, and consistent with Resistance Army-affected areas of central Africa episodically, as they are available, and consistent with
other Department of Defense requirements.”other Department of Defense requirements.”35
Iraq. On June 19, 2014, President Obama announced his decision to deploy 300 U.S. military . On June 19, 2014, President Obama announced his decision to deploy 300 U.S. military
personnel to advise the Iraqi security forces. These special operators personnel to advise the Iraqi security forces. These special operators ~~wil~~ would secure the U.S. embassy and secure the U.S. embassy and
personnel operating inside Iraq, assess the situation on the ground, help evaluate gaps in Iraqi personnel operating inside Iraq, assess the situation on the ground, help evaluate gaps in Iraqi 5 The White House, Office of the Press Secretary, “Letter from the President—IDLs—War Powers Resolution,” March 25, 2014, at https://obamawhitehouse.archives.gov/the-press-office/2014/03/25/letter-president-idls-war-powers-resolution. Congressional Research Service 31 Instances of Use of United States Armed Forces Abroad, 1798-2023 security ~~security~~
forces, and increase these forces’ capacity to counter the threat posed by the Islamic State of Iraq and forces, and increase these forces’ capacity to counter the threat posed by the Islamic State of Iraq and
the Levant (ISIL).the Levant (ISIL).46 See CRS Report R43612, See CRS Report R43612, The Islamic State and U.S. Policy.
Iraq. June 30, 2014, President Obama ordered an additional 200 military personnel deployed to Iraq . June 30, 2014, President Obama ordered an additional 200 military personnel deployed to Iraq
to reinforce security at the U.S. embassy in Baghdad and other U.S. facilities as well as at the city’s to reinforce security at the U.S. embassy in Baghdad and other U.S. facilities as well as at the city’s
international airport.international airport.57
Ukraine. On August 6, 2014, at the request of the U.S. State Department, a dozen American troops . On August 6, 2014, at the request of the U.S. State Department, a dozen American troops
from U.S. European Command arrived in Kiev, Ukraine, to help investigate the downing of the from U.S. European Command arrived in Kiev, Ukraine, to help investigate the downing of the
Malaysian airliner MH17 that kil ed all 298 passengers aboard.Malaysian airliner MH17 that kil ed all 298 passengers aboard.68 These specialists These specialists ~~wil~~ would assist State assist State
Department personnel in Kiev and not visit the crash site in eastern Ukraine, where there Department personnel in Kiev and not visit the crash site in eastern Ukraine, where there ~~is fighting~~

~~3 The White House, Office of the Press Secretary, “Letter from the President—IDLs—War Powers Resolution,” March~~
~~25, 2014, at https://obamawhitehouse.archives.gov/the-press-office/2014/03/25/letter-president-idls-war-powers-~~
~~resolution.~~
~~4 The White House, Office of the Press Secretary, “Remarks by the President on the Situation in Iraq,” June 19, 2014,~~
~~at https://obamawhitehouse.archives.gov/the-press-office/2014/06/19/remarks-president-situation-iraq.~~
~~5 U.S. Department of Defense (DOD), “Additional Troops Sent to Bolster Security at U.S. Embassy in Baghdad,” DOD~~
~~News, June 30, 2014.~~
~~6 Richard Sisk, “US Military Deploys Team of Troops to Ukraine,” Military.com, August 6, 2014, at~~
~~http://www.military.com/daily-news/2014/08/06/us-military-deploys-team-of-troops-to-ukraine.html?ESRC=eb.nl.~~
~~Congressional Research Service~~
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~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

was fighting between the Ukrainian forces of the central government and separatists backed by Russia. See CRS between the Ukrainian forces of the central government and separatists backed by Russia. See CRS
Report RL33460, Report RL33460, Ukraine: Current Issues and U.S. Policy, for more detail. , for more detail.
Iraq. On August 13, 2014, Defense Secretary Hagel announced that President Obama had ordered . On August 13, 2014, Defense Secretary Hagel announced that President Obama had ordered
130 new assessors to deploy to Erbil, Iraq, to assess the scope of the humanitarian mission and 130 new assessors to deploy to Erbil, Iraq, to assess the scope of the humanitarian mission and
develop additional humanitarian assistance options in support of displaced Iraqi civilians trapped on develop additional humanitarian assistance options in support of displaced Iraqi civilians trapped on
Sinjar Mountain by the ISIL.Sinjar Mountain by the ISIL.79
Poland. DOD announced on August 13, 2014, that 600 soldiers from the 1st Brigade, 1st Cavalry . DOD announced on August 13, 2014, that 600 soldiers from the 1st Brigade, 1st Cavalry
Division, Fort Hood, TX, Division, Fort Hood, TX, ~~wil~~ would rotate to Poland as the next unit to participate in the reassurance rotate to Poland as the next unit to participate in the reassurance
initiative. The brigade initiative. The brigade ~~wil~~ would be the next unit to take part in ongoing land forces exercises that fall under be the next unit to take part in ongoing land forces exercises that fall under
the umbrella of Operation Atlantic Resolve. According to Pentagon officials, “the United States is the umbrella of Operation Atlantic Resolve. According to Pentagon officials, “the United States is
demonstrating its continued commitment to col ective security through a series of actions designed demonstrating its continued commitment to col ective security through a series of actions designed
to reassure NATO allies and partners of America’s dedication to enduring peace and stability in the to reassure NATO allies and partners of America’s dedication to enduring peace and stability in the
region, in light of the Russian intervention in Ukraine.”region, in light of the Russian intervention in Ukraine.”810
Iraq. On September 2, 2014, President Barack Obama approved an increase of 350 additional military . On September 2, 2014, President Barack Obama approved an increase of 350 additional military
personnel on the ground in Baghdad providing security at the U.S. embassy compound and its support personnel on the ground in Baghdad providing security at the U.S. embassy compound and its support
facilities.facilities.911 On September 10, Pentagon Press Secretary Navy Rear Adm. John Kirby announced that On September 10, Pentagon Press Secretary Navy Rear Adm. John Kirby announced that
“approximately 475 additional servicemembers wil be deployed to Iraq to conduct the fol owing “approximately 475 additional servicemembers wil be deployed to Iraq to conduct the fol owing
missions: advise and assist the Iraqi security forces in order to help them go on the offense against missions: advise and assist the Iraqi security forces in order to help them go on the offense against
ISIL, conduct intelligence, surveillance and reconnaissance flights to increase U.S. capacity to target ISIL, conduct intelligence, surveillance and reconnaissance flights to increase U.S. capacity to target
ISIL, and coordinate the activities of the U.S. military across Iraq.”ISIL, and coordinate the activities of the U.S. military across Iraq.”1012
Liberia, West Africa. President Obama announced on September 16, 2014, a major increase in the U.S. President Obama announced on September 16, 2014, a major increase in the U.S.
response to the current Ebola outbreak in West Africa. U.S. Africa Command set up a Joint Force response to the current Ebola outbreak in West Africa. U.S. Africa Command set up a Joint Force
Command headquartered in Monrovia, Liberia, to provide regional command-and-control support to Command headquartered in Monrovia, Liberia, to provide regional command-and-control support to
U.S. military activities and facilitate coordination with U.S. government and international relief U.S. military activities and facilitate coordination with U.S. government and international relief
efforts.efforts.1113 An estimated 3,000 U.S. forces An estimated 3,000 U.S. forces ~~are to~~would be involved in the upcoming months. Pentagon be involved in the upcoming months. Pentagon
spokesman Army Colonel Steve Warrenspokesman Army Colonel Steve Warren announced that as of September 29, 2014, about 150 U.S. announced that as of September 29, 2014, about 150 U.S.
servicemembers were in the Liberian capital Monrovia, conducting a range of activities in support of servicemembers were in the Liberian capital Monrovia, conducting a range of activities in support of
~~the U.S. Agency for International Development, as U.S. Africa Command sets up a joint force~~
~~command headquarters there to support U.S. military activities.12~~
Liberia and Senegal, West Africa. On October 1, 2014, Defense Secretary Hagel authorized the
~~deployment of 700 soldiers from the 101st Airborne Division headquarters to Liberia to help with the~~
~~Ebola epidemic. By October 3, there were 205 U.S. servicemembers in Liberia, with another 26 in~~
~~neighboring Senegal to establish a cargo-processing hub in support of Operation United Assistance,~~
~~the international effort to battle Ebola in West Africa.13 On October 29, a 20-member team of Air~~
~~Force medical trainers arrived in Monrovia, Liberia, to train non-U.S. medical personnel as part of~~
~~Operation United Assistance. On October 31, a team of soldier-scientists who are part of an Army~~

7 6 The White House, Office of the Press Secretary, “Remarks by the President on the Situation in Iraq,” June 19, 2014, at https://obamawhitehouse.archives.gov/the-press-office/2014/06/19/remarks-president-situation-iraq. 7 U.S. Department of Defense (DOD), “Additional Troops Sent to Bolster Security at U.S. Embassy in Baghdad,” DOD News, June 30, 2014. 8 Richard Sisk, “US Military Deploys Team of Troops to Ukraine,” Military.com, August 6, 2014, at http://www.military.com/daily-news/2014/08/06/us-military-deploys-team-of-troops-to-ukraine.html?ESRC=eb.nl. 9 Jim Garamone, “President Sends More Assessors to Iraq,” DOD News, Defense Media Activity, August 13, 2014, at Jim Garamone, “President Sends More Assessors to Iraq,” DOD News, Defense Media Activity, August 13, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603059/. https://www.defense.gov/Explore/News/Article/Article/603059/.
810 Army Sgt.1st Class Tyrone C. Marshall Jr., “DOD Announces Operation Atlantic Resolve Brigade Rotation,” Army Sgt.1st Class Tyrone C. Marshall Jr., “DOD Announces Operation Atlantic Resolve Brigade Rotation,” DOD DOD
News, Defense Media Activity, August 13, 2014, at News, Defense Media Activity, August 13, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603063/dod-announces-operation-atlantic-resolve-brigade-https://www.defense.gov/Explore/News/Article/Article/603063/dod-announces-operation-atlantic-resolve-brigade-
rotation. rotation.
911 DOD, “Statement from Pentagon Press Secretary Rear Admiral John Kirby on Security Personnel in Iraq,” DOD DOD, “Statement from Pentagon Press Secretary Rear Admiral John Kirby on Security Personnel in Iraq,” DOD
News Release, September 2, 2014, at https://www.defense.gov/Newsroom/Releases/Release/Article/605161/statement-News Release, September 2, 2014, at https://www.defense.gov/Newsroom/Releases/Release/Article/605161/statement-
from-pentagon-press-secretary-rear-admiral-john-kirby-on-security-per/. from-pentagon-press-secretary-rear-admiral-john-kirby-on-security-per/.
1012 Jim Garamone, “U.S. Sending 475 More Service Members to Iraq,” DOD News, September 10, 2014, at Jim Garamone, “U.S. Sending 475 More Service Members to Iraq,” DOD News, September 10, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603214/us-sending-475-more-service-members-to-iraq/. https://www.defense.gov/Explore/News/Article/Article/603214/us-sending-475-more-service-members-to-iraq/.
1113 The White House, Office of the Press Secretary, “Fact Sheet: U.S. Response to the Ebola Epidemic in West Africa,” The White House, Office of the Press Secretary, “Fact Sheet: U.S. Response to the Ebola Epidemic in West Africa,”
September 16, 2014, at https://obamawhitehouse.archives.gov/the-press-office/2014/09/16/fact-sheet-us-response-September 16, 2014, at https://obamawhitehouse.archives.gov/the-press-office/2014/09/16/fact-sheet-us-response-
ebola-epidemic-west-africa. ebola-epidemic-west-africa.
~~12 Cheryl Pellerin, “Operation United Assistance Helps in Liberian Ebola Fight,” DOD News, September 29, 2014, at~~
~~https://www.defense.gov/Explore/News/Article/Article/603343/operation-united-assistance-helps-in-liberian-ebola-~~
~~fight/.~~
~~13 Jim Garamone, “DoD May Deploy up to 4,000 Troops to Combat Ebola,” DOD News, October 3, 2014, at~~
~~https://www.defense.gov/Explore/News/Article/Article/603381/.~~
~~Congressional Research Service~~
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Congressional Research Service 32 Instances of Use of United States Armed Forces Abroad, 1798-2023 the U.S. Agency for International Development, as U.S. Africa Command set up a joint force command headquarters there to support U.S. military activities.14 Liberia and Senegal, West Africa. On October 1, 2014, Defense Secretary Hagel authorized the deployment of 700 soldiers from the 101st Airborne Division headquarters to Liberia to help with the Ebola epidemic. By October 3, there were 205 U.S. servicemembers in Liberia, with another 26 in neighboring Senegal to establish a cargo-processing hub in support of Operation United Assistance, the international effort to battle Ebola in West Africa.15 On October 29, a 20-member team of Air Force medical trainers arrived in Monrovia, Liberia, to train non-U.S. medical personnel as part of Operation United Assistance. On October 31, a team of soldier-scientists who are part of an army expeditionary laboratory unit based in Aberdeen, MD, deployed to Liberia for up to a year to expeditionary laboratory unit based in Aberdeen, MD, deployed to Liberia for up to a year to
establish four labs outside Monrovia and contribute to the U.S. effort to halt Ebola outbreaks in West establish four labs outside Monrovia and contribute to the U.S. effort to halt Ebola outbreaks in West
Africa.Africa.1416
Iraq. On November 7, 2014, the President authorized the Secretary of Defense to deploy to Iraq up . On November 7, 2014, the President authorized the Secretary of Defense to deploy to Iraq up
to 1,500 additional U.S. personnel over the coming months, in a non-combat role. CENTCOM to 1,500 additional U.S. personnel over the coming months, in a non-combat role. CENTCOM ~~wil~~
would establish two expeditionary advice and assist operations centers, in locations outside of Baghdad and establish two expeditionary advice and assist operations centers, in locations outside of Baghdad and
Erbil, to provide support for the Iraqis at the brigade headquarters level and above.Erbil, to provide support for the Iraqis at the brigade headquarters level and above.1517
Dakar, Senegal. On November 10, 2014, 35 airmen and two Air Force C-130 Hercules aircraft from . On November 10, 2014, 35 airmen and two Air Force C-130 Hercules aircraft from
Dyess Air Force Base, TX, joined forces with more than 70 airmen from the Kentucky Air National Dyess Air Force Base, TX, joined forces with more than 70 airmen from the Kentucky Air National
Guard’s 123rd Contingency Response Group who have been operating a cargo hub at the Guard’s 123rd Contingency Response Group who have been operating a cargo hub at the
International Airport in Dakar since October 5, 2014, as part of Operation United Assistance.International Airport in Dakar since October 5, 2014, as part of Operation United Assistance.1618
Senegal and Liberia, , West Africa. On November 14, 2014, Secretary of Defense Chuck Hagel signed an . On November 14, 2014, Secretary of Defense Chuck Hagel signed an
order authorizing the involuntary mobilization of approximately 2,100 Army Reserve and Army order authorizing the involuntary mobilization of approximately 2,100 Army Reserve and Army
National Guard soldiers to support Operation United Assistance.National Guard soldiers to support Operation United Assistance.1719 These troops would replace These troops would replace
forces in Senegal and Liberia who are supporting the U.S. response to the Ebola outbreak. forces in Senegal and Liberia who are supporting the U.S. response to the Ebola outbreak.
Vilnius, Lithuania. On November 24, 2014,On November 24, 2014, Lieutenant General Ben Hodges, the commander of U.S. Lieutenant General Ben Hodges, the commander of U.S.
Army Europe, stated that soldiers of the 1st Cavalry Division and later replacement units would Army Europe, stated that soldiers of the 1st Cavalry Division and later replacement units would
rotate to locations in Eastern Europe through the end of 2015 as part of Operation Atlantic Resolve. rotate to locations in Eastern Europe through the end of 2015 as part of Operation Atlantic Resolve.
Those rotations could continue beyond 2015.Those rotations could continue beyond 2015.1820
Iraq. On December 19, 2014, Pentagon Press Secretary Navy Rear Adm. John Kirby announced that On December 19, 2014, Pentagon Press Secretary Navy Rear Adm. John Kirby announced that
up to 1,300 more U.S. troops, including approximately 1,000 soldiers from the Army’s 82nd Airborne up to 1,300 more U.S. troops, including approximately 1,000 soldiers from the Army’s 82nd Airborne
Division, Division, ~~wil~~ would deploy to Iraq in late January 2015 “to train, advise and assist Iraqi security forces.”deploy to Iraq in late January 2015 “to train, advise and assist Iraqi security forces.”1921
2015 2015
Liberia and Senegal, West Africa. On January 8, 2015, Pentagon spokesman Army Colonel Steve . On January 8, 2015, Pentagon spokesman Army Colonel Steve
Warren announced that 2,367 DOD personnel were involved in the battle to stop the spread of Warren announced that 2,367 DOD personnel were involved in the battle to stop the spread of
Ebola. Most of those personnel (2,174) Ebola. Most of those personnel (2,174) ~~are~~were based in Liberia’s capital, Monrovia, and the remaining 14 Cheryl Pellerin, “Operation United Assistance Helps in Liberian Ebola Fight,” DOD News, September 29, 2014, at https://www.defense.gov/Explore/News/Article/Article/603343/operation-united-assistance-helps-in-liberian-ebola-fight/. 15 Jim Garamone, “DoD May Deploy up to 4,000 Troops to Combat Ebola,” DOD News, October 3, 2014, at https://www.defense.gov/Explore/News/Article/Article/603381/. 16 ~~based in Liberia’s capital, Monrovia, and the remaining 193~~
~~personnel were Marine Corps members and port operations personnel operating in Dakar, Senegal.~~
~~The Pentagon noted that U.S. military personnel were not involved in treating patients with Ebola.~~
~~Instead, U.S. military personnel provided continuing logistical support and training for health care~~
~~workers, testing medical samples, and constructing treatment units.20~~
Korea. On March 20, 2015, the Defense Secretary approved the nine-month rotation of a multiple
~~launch rocket system (MLRS) battalion of approximately 400 soldiers from the 2nd Battalion, 20th Field~~

14 Cheryl Pellerin, “Army Expeditionary Laboratory Team to Deploy to Liberia,” DOD News, October 31, 2014, at Cheryl Pellerin, “Army Expeditionary Laboratory Team to Deploy to Liberia,” DOD News, October 31, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603564/. https://www.defense.gov/Explore/News/Article/Article/603564/.
1517 DOD, “Statement by Pentagon Press Secretary Rear Admiral John Kirby on the Authorization to Deploy Additional DOD, “Statement by Pentagon Press Secretary Rear Admiral John Kirby on the Authorization to Deploy Additional
Forces to Iraq,” press release, NR-562-14, November 7, 2014, at Forces to Iraq,” press release, NR-562-14, November 7, 2014, at
https://www.defense.gov/Newsroom/Releases/Release/Article/605265/statement-by-pentagon-press-secretary-rear-https://www.defense.gov/Newsroom/Releases/Release/Article/605265/statement-by-pentagon-press-secretary-rear-
admiral-john-kirby-on-the-authorizat/. admiral-john-kirby-on-the-authorizat/.
1618 Maj. Dale Greer, “Troops Establish Air Bridge for Ebola Response,” DOD News, November 10, 2014, at Maj. Dale Greer, “Troops Establish Air Bridge for Ebola Response,” DOD News, November 10, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603625/troops-establish-air-bridge-for-ebola-response/. https://www.defense.gov/Explore/News/Article/Article/603625/troops-establish-air-bridge-for-ebola-response/.
1719 “Hagel Mobilizes Reserve Forces in Support of Operation United Assistance,” DOD News, November 14, 2014, at “Hagel Mobilizes Reserve Forces in Support of Operation United Assistance,” DOD News, November 14, 2014, at
https://www.defense.gov/Explore/News/Article/Article/603652/hagel-mobilizes-reserve-forces-in-support-of-https://www.defense.gov/Explore/News/Article/Article/603652/hagel-mobilizes-reserve-forces-in-support-of-
operation-united-assistance/. operation-united-assistance/.
1820 David Vergun, “Eastern Europe Troop Rotations Could Continue, Commander Says,” DOD News, Army News David Vergun, “Eastern Europe Troop Rotations Could Continue, Commander Says,” DOD News, Army News
Service, November 24, 2014, at https://www.defense.gov/Explore/News/Article/Article/603712/eastern-europe-troop-Service, November 24, 2014, at https://www.defense.gov/Explore/News/Article/Article/603712/eastern-europe-troop-
rotations-could-continue-commander-says/. rotations-could-continue-commander-says/.
1921 Jake Richmond, “Hagel Authorizes Up to 1,300 Additional Troops to Deploy to Iraq,” DOD News, December 19, Jake Richmond, “Hagel Authorizes Up to 1,300 Additional Troops to Deploy to Iraq,” DOD News, December 19,
2014, at https://www.defense.gov/Explore/News/Article/Article/603838/hagel-authorizes-up-to-1300-additional-2014, at https://www.defense.gov/Explore/News/Article/Article/603838/hagel-authorizes-up-to-1300-additional-
troops-to-deploy-to-iraq/. troops-to-deploy-to-iraq/.
~~20 Claudette Roulo, “DoD Releases Breakdown of Ebola Response Effort,” DOD News, January 8, 2015, at~~
~~https://www.defense.gov/Explore/News/Article/Article/603892/dod-releases-breakdown-of-ebola-response-~~
~~effort/igphoto/2001868737/.~~
~~Congressional Research Service~~
33

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

~~Artil ery to the Republic of Korea (ROK) in June.21 They wil~~ Congressional Research Service 33 Instances of Use of United States Armed Forces Abroad, 1798-2023 193 personnel were Marine Corps members and port operations personnel operating in Dakar, Senegal. The Pentagon noted that U.S. military personnel were not involved in treating patients with Ebola. Instead, U.S. military personnel provided continuing logistical support and training for health care workers, testing medical samples, and constructing treatment units.22 Korea. On March 20, 2015, the Defense Secretary approved the nine-month rotation of a multiple launch rocket system (MLRS) battalion of approximately 400 soldiers from the 2nd Battalion, 20th Field Artil ery to the Republic of Korea (ROK) in June.23 They would join the 210th Field Artil ery Brigade at join the 210th Field Artil ery Brigade at
Camp Casey, ROK. Camp Casey, ROK.
Iraq. On June 10, 2015, President Obama authorized Defense Secretary Carter to provide a small . On June 10, 2015, President Obama authorized Defense Secretary Carter to provide a small
increase in additional U.S. personnel to be deployed to Iraq in a noncombat role. The President increase in additional U.S. personnel to be deployed to Iraq in a noncombat role. The President
authorized up to 450 additional U.S. personnel to deploy to Iraq to expand the U.S. advise-and-assist authorized up to 450 additional U.S. personnel to deploy to Iraq to expand the U.S. advise-and-assist
mission at Al-Taqaddum Air Base in support of the Iraqi government.mission at Al-Taqaddum Air Base in support of the Iraqi government.2224 This This ~~brings~~brought U.S. troop totals U.S. troop totals
up to 3,550 authorized across Iraq. These forces up to 3,550 authorized across Iraq. These forces ~~are~~were intended to provide an advisory, training, and intended to provide an advisory, training, and
support role and not conduct offensive ground combat operations.support role and not conduct offensive ground combat operations.2325
Iraq, Afghanistan, and Middle East. On August 5, 2015, the Army announced unit rotations involving . On August 5, 2015, the Army announced unit rotations involving
3,000 troops in August and September. About 1,250 soldiers from the 1st Brigade Combat Team, 10th 3,000 troops in August and September. About 1,250 soldiers from the 1st Brigade Combat Team, 10th
Mountain Division, based at Fort Drum, New York, are slated to rotate to Iraq for nine months.Mountain Division, based at Fort Drum, New York, are slated to rotate to Iraq for nine months.2426 An An
additional 300 10th Mountain troops are to join another 1,000 troops from the 3rd Brigade Combat additional 300 10th Mountain troops are to join another 1,000 troops from the 3rd Brigade Combat
Team of the 10th Mountain based at Fort Polk, Louisiana, to deploy to Afghanistan.Team of the 10th Mountain based at Fort Polk, Louisiana, to deploy to Afghanistan.2527
Kuwait. On September 24, 2015, the Department of the Army announced that approximately 4,000 . On September 24, 2015, the Department of the Army announced that approximately 4,000
soldiers from the 2nd Brigade, 1st Infantry Division stationed at Fort Riley, Kansas, soldiers from the 2nd Brigade, 1st Infantry Division stationed at Fort Riley, Kansas, ~~wil~~ would deploy in late deploy in late
fall.fall.2628 The deployment The deployment iswould be a nine-month rotational replacement of troops. a nine-month rotational replacement of troops.
Cameroon. On October 14, 2015, President Obama sent a letter to the Speaker of the House, . On October 14, 2015, President Obama sent a letter to the Speaker of the House,
consistent with the War Powers Resolution, regarding the deployment of 90 U.S. troops to consistent with the War Powers Resolution, regarding the deployment of 90 U.S. troops to
Cameroon, with the consent of the government of Cameroon, to help fight against the Islamist Cameroon, with the consent of the government of Cameroon, to help fight against the Islamist
militants Boko Haram. This deployment militants Boko Haram. This deployment iswas in advance of expected additional U.S. Armed Forces in advance of expected additional U.S. Armed Forces
personnel to Cameroon to conduct airborne intelligence, surveillance, and reconnaissance operations personnel to Cameroon to conduct airborne intelligence, surveillance, and reconnaissance operations
in the region.in the region.~~27 The total number of~~29 Approximately 300 U.S. military personnel U.S. military personnel ~~to be deployed is approximately 300~~would deploy. .
Republic of Korea. On November 30, 2015, the Department of the Army announced today the 1st On November 30, 2015, the Department of the Army announced today the 1st
Cavalry Division’s 1st Armored Brigade Combat Team Cavalry Division’s 1st Armored Brigade Combat Team ~~wil~~ would deploy with approximately 4,500 soldiers deploy with approximately 4,500 soldiers
to the Republic of Korea in early 2016. This deployment to the Republic of Korea in early 2016. This deployment iswas part of a regular rotation of forces in part of a regular rotation of forces in
support of U.S. Forces Korea.support of U.S. Forces Korea.28
~~2016~~
Iraq. On June 11, 2016, Secretary of Defense Ash Carter, in Baghdad, announced to U.S. coalition
~~allies that an additional 560 troops wil be deployed to Iraq to assist in the fight against ISIL. He~~
~~commended them for recent progress in the fight against ISIL, including the capture of a strategic~~
~~airfield near the town of Qayyarah that wil aid operations to free Mosul.29~~

2130 22 Claudette Roulo, “DoD Releases Breakdown of Ebola Response Effort,” DOD News, January 8, 2015, at https://www.defense.gov/Explore/News/Article/Article/603892/dod-releases-breakdown-of-ebola-response-effort/igphoto/2001868737/. 23 “Multiple Launch Rocket System Battalion Rotation Approved,” DOD News, March 20, 2015, at “Multiple Launch Rocket System Battalion Rotation Approved,” DOD News, March 20, 2015, at
https://www.defense.gov/Explore/News/Article/Article/604317/multiple-launch-rocket-system-battalion-to-rotate-to-https://www.defense.gov/Explore/News/Article/Article/604317/multiple-launch-rocket-system-battalion-to-rotate-to-
south-korea/. south-korea/.
2224 DOD, “Statement from the Department of Defense on Additional U.S. Personnel to Deploy to Iraq,” press release, DOD, “Statement from the Department of Defense on Additional U.S. Personnel to Deploy to Iraq,” press release,
NR-225-15, June 10, 2015, at https://www.defense.gov/Newsroom/Releases/Release/Article/605555/statement-from-NR-225-15, June 10, 2015, at https://www.defense.gov/Newsroom/Releases/Release/Article/605555/statement-from-
the-department-of-defense-on-additional-us-personnel-to-deploy-t/. the-department-of-defense-on-additional-us-personnel-to-deploy-t/.
2325 The White House, Office of the Press Secretary, “Press Conference Call on Additional Steps to Counter ISIL,” June The White House, Office of the Press Secretary, “Press Conference Call on Additional Steps to Counter ISIL,” June
10, 2015, at https://obamawhitehouse.archives.gov/the-press-office/2015/06/10/press-conference-call-additional-steps-10, 2015, at https://obamawhitehouse.archives.gov/the-press-office/2015/06/10/press-conference-call-additional-steps-
counter-isil. counter-isil.
2426 Richard Sisk, “Army Announces Troop Rotations to Iraq and Afghanistan,” Military.com, August 6, 2015, at Richard Sisk, “Army Announces Troop Rotations to Iraq and Afghanistan,” Military.com, August 6, 2015, at
http://www.military.com/daily-news/2015/08/06/army-announces-troop-rotations-to-iraq-and-afghanistan.html. http://www.military.com/daily-news/2015/08/06/army-announces-troop-rotations-to-iraq-and-afghanistan.html.
2527 Ibid. Ibid.
2628 DOD, “Department of Army Announces Upcoming Rotational Deployment,” press release, NR-372-15, September DOD, “Department of Army Announces Upcoming Rotational Deployment,” press release, NR-372-15, September
24, 2015, at https://www.defense.gov/Newsroom/Releases/Release/Article/620443/department-of-army-announces-24, 2015, at https://www.defense.gov/Newsroom/Releases/Release/Article/620443/department-of-army-announces-
upcoming-rotational-deployment/. upcoming-rotational-deployment/.
2729 The White House, Office of the Press Secretary, “Letter from the President—War Powers Resolution Regarding The White House, Office of the Press Secretary, “Letter from the President—War Powers Resolution Regarding
Cameroon,” October 14, 2015, at https://obamawhitehouse.archives.gov/the-press-office/2015/10/14/letter-from-Cameroon,” October 14, 2015, at https://obamawhitehouse.archives.gov/the-press-office/2015/10/14/letter-from-
president-war-powers-resolution-cameroon. president-war-powers-resolution-cameroon.
2830 DOD, “DA Announces Upcoming Rotational Deployment,” press release, NR-453-15, November 30, 2015, at DOD, “DA Announces Upcoming Rotational Deployment,” press release, NR-453-15, November 30, 2015, at
~~https://www.defense.gov/Newsroom/Releases/Release/Article/631512/da-announces-upcoming-rotational-~~
~~deployment/.~~
~~29 DOD, “Defense Secretary Commends Iraqi Forces, Announces New Accelerants to Combat ISIL in Visit to Iraq,”~~
~~press release, NR-259-16, July 11, 2016, at https://www.defense.gov/Newsroom/Releases/Release/Article/832829/.~~
~~Congressional Research Service~~
34

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

(continued...) Congressional Research Service 34 Instances of Use of United States Armed Forces Abroad, 1798-2023 2016 Iraq. On June 11, 2016, Secretary of Defense Ash Carter, in Baghdad, announced to U.S. coalition allies that an additional 560 troops would deploy to Iraq to assist in the fight against ISIL. He commended them for recent progress in the fight against ISIL, including the capture of a strategic airfield near the town of Qayyarah that aided operations to free Mosul.31 Afghanistan, Iraq, Syria, Turkey, Somalia, Yemen, Djibouti, Libya, Cuba, Central Africa, Egypt, Jordan,
and NATO/Kosovo. On June 13, 2016, President Obama sent a letter to the Speaker of the House, . On June 13, 2016, President Obama sent a letter to the Speaker of the House,
consistent with the War Powers Resolution, regarding the deployment of U.S. Armed Forces in these consistent with the War Powers Resolution, regarding the deployment of U.S. Armed Forces in these
strategic areas as part of U.S. military operations in support of U.S. counterterrorism objectives strategic areas as part of U.S. military operations in support of U.S. counterterrorism objectives
against al-Qaida, the Taliban, and the Islamic State of Iraq and the Levant (ISIL).against al-Qaida, the Taliban, and the Islamic State of Iraq and the Levant (ISIL).3032
South Sudan. The American Embassy announced on July 11, 2016, an additional 40 U.S. troops to help The American Embassy announced on July 11, 2016, an additional 40 U.S. troops to help
protect the U.S. embassy in South Sudan, after a series of fighting kil ed hundreds in Juba, the protect the U.S. embassy in South Sudan, after a series of fighting kil ed hundreds in Juba, the
country’s capital.country’s capital.3133 Beginning on July 14, 2016, up to approximately 200 U.S. Armed Forces with Beginning on July 14, 2016, up to approximately 200 U.S. Armed Forces with
appropriate combat equipment, including those forces initially prepositioned in Djibouti, appropriate combat equipment, including those forces initially prepositioned in Djibouti, ~~are~~were
prepositioning in Uganda for this purpose.prepositioning in Uganda for this purpose.3234
Afghanistan. On August 5, 2016, the Department of the Army announced the deployment of 2nd . On August 5, 2016, the Department of the Army announced the deployment of 2nd
Brigade Combat Team, 101st Airborne Division (Air Assault), stationed in Fort Campbell, Kentucky, Brigade Combat Team, 101st Airborne Division (Air Assault), stationed in Fort Campbell, Kentucky,
with approximately 400 soldiers to Iraq this summer in support of Operation Inherent Resolve.with approximately 400 soldiers to Iraq this summer in support of Operation Inherent Resolve.3335
Afghanistan. The Department of the Army announced on September 6, 2016, that the 3rd Brigade . The Department of the Army announced on September 6, 2016, that the 3rd Brigade
Combat Team, 101st Airborne Division (Air Assault), Fort Campbell, Kentucky, Combat Team, 101st Airborne Division (Air Assault), Fort Campbell, Kentucky, ~~wil~~ would deploy about deploy about
1,400 soldiers in the fall of 2016 to Afghanistan in support of Operation Freedom’s Sentinel.1,400 soldiers in the fall of 2016 to Afghanistan in support of Operation Freedom’s Sentinel.3436
Iraq. Defense Secretary Carter announced on September 28, 2016, that 600 additional U.S. troops Defense Secretary Carter announced on September 28, 2016, that 600 additional U.S. troops ~~are~~
were headed to Iraq ahead of a major offensive to retake the city of Mosul from the Islamic State.headed to Iraq ahead of a major offensive to retake the city of Mosul from the Islamic State.35 37 The The
current cap for U.S. troops in Iraq current cap for U.S. troops in Iraq iswas over 4,600, meaning the new deployment over 4,600, meaning the new deployment ~~wil~~ would push the troop push the troop
level there to well over 5,200.level there to well over 5,200.3638
Haiti. On October 7, 2016, the Defense Department announced that the USSOn October 7, 2016, the Defense Department announced that the USS Mesa Verde with 300 with 300
marines on board received orders to support SOUTHCOM with humanitarian efforts after Hurricane marines on board received orders to support SOUTHCOM with humanitarian efforts after Hurricane
Matthew.Matthew.37
Yemen. On October 14, 2016, President Obama sent a letter to the Speaker of the House, consistent
~~with the War Powers Resolution, directing U.S. Armed Forces to conduct missile strikes on radar~~
~~facilities in Houthi-control ed territory in Yemen. Initial assessments showed that the radar facilities~~
~~were destroyed by the strikes.38~~

3039 https://www.defense.gov/Newsroom/Releases/Release/Article/631512/da-announces-upcoming-rotational-deployment/. 31 DOD, “Defense Secretary Commends Iraqi Forces, Announces New Accelerants to Combat ISIL in Visit to Iraq,” press release, NR-259-16, July 11, 2016, at https://www.defense.gov/Newsroom/Releases/Release/Article/832829/. 32 The White House, Office of the Press Secretary, “Letter from the President—War Powers Resolution,” June 13, The White House, Office of the Press Secretary, “Letter from the President—War Powers Resolution,” June 13,
2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/06/13/letter-president-war-powers-resolution. 2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/06/13/letter-president-war-powers-resolution.
3133 Department of State, Overseas Security Advisory Council (OSAC) Bureau of Diplomatic Security, “Security Department of State, Overseas Security Advisory Council (OSAC) Bureau of Diplomatic Security, “Security
Message for U.S. Citizens: Update about Juba Unrest,” July 11, 2016, at https://www.osac.gov/Content/Report/Message for U.S. Citizens: Update about Juba Unrest,” July 11, 2016, at https://www.osac.gov/Content/Report/
5d6abd25-cea6-49df-80dc-15f4add8cf0d and “Letter from the President—War Powers Resolution,” July 13, 2016, at 5d6abd25-cea6-49df-80dc-15f4add8cf0d and “Letter from the President—War Powers Resolution,” July 13, 2016, at
https://obamawhitehouse.archives.gov/the-press-office/2016/07/13/letter-president-war-powers-resolution. https://obamawhitehouse.archives.gov/the-press-office/2016/07/13/letter-president-war-powers-resolution.
3234 The White House. Office of the Press Secretary. “Letter from the President—War Powers Resolution,” July 15, The White House. Office of the Press Secretary. “Letter from the President—War Powers Resolution,” July 15,
2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/07/15/letter-president-war-powers-resolution. 2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/07/15/letter-president-war-powers-resolution.
3335 “Army Public Affairs, “Department of the Army Announces 101st Airborne Division Deployment,” August 11, 2016, “Army Public Affairs, “Department of the Army Announces 101st Airborne Division Deployment,” August 11, 2016,
at https://www.army.mil/article/172903/department_of_the_army_announces_101st_airborne_division_deployment. at https://www.army.mil/article/172903/department_of_the_army_announces_101st_airborne_division_deployment.
3436 Army Public Affairs, “Army Announces 3rd Brigade Combat Team, 101st Airborne Division Deployment,” Army Public Affairs, “Army Announces 3rd Brigade Combat Team, 101st Airborne Division Deployment,”
September 9, 2016, at https://www.army.mil/article/174606/September 9, 2016, at https://www.army.mil/article/174606/
army_announces_3rd_brigade_combat_team_101st_airborne_division_deployment. army_announces_3rd_brigade_combat_team_101st_airborne_division_deployment.
3537 Terri Moon Cronk, “Carter: 600 Troops to Deploy to Enable Iraqis to Retake Mosul from ISIL,” U.S. Central Terri Moon Cronk, “Carter: 600 Troops to Deploy to Enable Iraqis to Retake Mosul from ISIL,” U.S. Central
Command, September 28, 2016, at http://www.centcom.mil/MEDIA/NEWS-ARTICLES/News-Article-View/Article/Command, September 28, 2016, at http://www.centcom.mil/MEDIA/NEWS-ARTICLES/News-Article-View/Article/
958881/carter-600-troops-to-deploy-to-enable-iraqis-to-retake-mosul-from-isil/. 958881/carter-600-troops-to-deploy-to-enable-iraqis-to-retake-mosul-from-isil/.
3638 Richard Sisk, “U.S. Sending 600 More U.S. Troops to Iraq to Bolster Drive on Mosul,” Military.com, September 28, Richard Sisk, “U.S. Sending 600 More U.S. Troops to Iraq to Bolster Drive on Mosul,” Military.com, September 28,
2016, at http://www.military.com/daily-news/2016/09/28/us-sending-600-more-troops-to-iraq-to-bolster-drive-on-2016, at http://www.military.com/daily-news/2016/09/28/us-sending-600-more-troops-to-iraq-to-bolster-drive-on-
mosul.html. mosul.html.
3739 DOD, “Department of Defense’s Preparation, Support, and Recovery Efforts for Hurricane Matthew,” Press DOD, “Department of Defense’s Preparation, Support, and Recovery Efforts for Hurricane Matthew,” Press
Operations Release No: NR-355-16, Oct. 7, 2016, at Operations Release No: NR-355-16, Oct. 7, 2016, at
https://www.defense.gov/Newsroom/Releases/Release/Article/968728/department-of-defenses-preparation-support-https://www.defense.gov/Newsroom/Releases/Release/Article/968728/department-of-defenses-preparation-support-
and-recovery-efforts-for-hurricane-m/. and-recovery-efforts-for-hurricane-m/.
~~38 The White House. Office of the Press Secretary. “Letter from the President—War Powers Resolution,”~~Congressional Research Service 35 Instances of Use of United States Armed Forces Abroad, 1798-2023 Yemen. On October 14, October 14,
~~2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/10/14/letter-president-war-powers-resolution.~~
~~Congressional Research Service~~
35

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

2016, President Obama sent a letter to the Speaker of the House, consistent with the War Powers Resolution, directing U.S. Armed Forces to conduct missile strikes on radar facilities in Houthi-control ed territory in Yemen. Initial assessments showed that the radar facilities were destroyed by the strikes.40 Afghanistan. On December 8, 2016, the Department of the Army announced the deployment of 1st On December 8, 2016, the Department of the Army announced the deployment of 1st
Brigade Combat Team, 1st Armored Division, stationed in Fort Bliss, Texas, with approximately 1,500 Brigade Combat Team, 1st Armored Division, stationed in Fort Bliss, Texas, with approximately 1,500
soldiers to Afghanistan this winter. This deployment soldiers to Afghanistan this winter. This deployment iswas part of a regular rotation of forces in support part of a regular rotation of forces in support
of Operation Freedom's Sentinel.of Operation Freedom's Sentinel.3941
2017 2017
Europe. On January 5, 2017, Pentagon Press Secretary Peter Cook announced the United States On January 5, 2017, Pentagon Press Secretary Peter Cook announced the United States is
~~demonstrating~~would demonstrate its continued commitment to col ective security through a series of actions designed its continued commitment to col ective security through a series of actions designed
to reassure NATO allies and partners of America's dedication to enduring peace and stability in the to reassure NATO allies and partners of America's dedication to enduring peace and stability in the
region in light of the Russian intervention in Ukraine. Tanks, trucks, and other equipment region in light of the Russian intervention in Ukraine. Tanks, trucks, and other equipment ~~are~~
were scheduled to arrive in Europe scheduled to arrive in Europe ~~this weekend~~the weekend fol owing the announcement, beginning a nine-month rotation of U.S. Army forces , beginning a nine-month rotation of U.S. Army forces
supporting Operation Atlantic Resolve. The arrival of troops (3,500 soldiers) and equipment from supporting Operation Atlantic Resolve. The arrival of troops (3,500 soldiers) and equipment from
Third Armor Brigade Combat Team, 4th Infantry Division out of Fort Carson, Colorado, Third Armor Brigade Combat Team, 4th Infantry Division out of Fort Carson, Colorado, ~~marks~~marked the the
beginning of the continuous presence of an ABCT and back-to-back rotations of U.S. troops and beginning of the continuous presence of an ABCT and back-to-back rotations of U.S. troops and
equipment in Europe. After the equipment equipment in Europe. After the equipment ~~arrives~~arrived at Bremerhaven, Germany, it at Bremerhaven, Germany, it ~~wil~~ would move by rail, move by rail,
commercial line haul, and military convoy to Poland. The personnel and equipment commercial line haul, and military convoy to Poland. The personnel and equipment ~~wil~~ would later be later be
relocated throughout the region for training and exercises with European allies. This effort relocated throughout the region for training and exercises with European allies. This effort iswas part of part of
the nation’s European Reassurance Initiative to maintain persistent, rotational presence of air, land, the nation’s European Reassurance Initiative to maintain persistent, rotational presence of air, land,
and sea forces in Central and Eastern Europe.and sea forces in Central and Eastern Europe.4042
Iraq. According to Army Colonel Brett Sylvia, the brigade's commander, the 101st Airborne Division's According to Army Colonel Brett Sylvia, the brigade's commander, the 101st Airborne Division's
2nd Brigade Combat Team returned to Fort Campbell, Kentucky, in January 2017, and was replaced 2nd Brigade Combat Team returned to Fort Campbell, Kentucky, in January 2017, and was replaced
by the 82nd Airborne Division's 2nd Brigade Combat Team in Iraq.by the 82nd Airborne Division's 2nd Brigade Combat Team in Iraq.4143
Guatemala. Continuing Promise 17 personnel arrived in Puerto Barrios, Guatemala, on January 30, for Continuing Promise 17 personnel arrived in Puerto Barrios, Guatemala, on January 30, for
the operation’s first stop of its three-month humanitarian mission. Continuing Promise 17 the operation’s first stop of its three-month humanitarian mission. Continuing Promise 17 iswas a a
SOUTHCOM-sponsored and U.S. Naval Forces Southern/U.S. 4th Fleet deployment to conduct civil-SOUTHCOM-sponsored and U.S. Naval Forces Southern/U.S. 4th Fleet deployment to conduct civil-
military operations. Included military operations. Included ~~are~~were humanitarian assistance, training engagements and medical, dental, humanitarian assistance, training engagements and medical, dental,
and veterinary support in an effort to show U.S. support and commitment to Central and South and veterinary support in an effort to show U.S. support and commitment to Central and South
America.America.4244
Korea. Secretary of Defense James Mattis announced on February 3, 2017, that “due to North Korea's Secretary of Defense James Mattis announced on February 3, 2017, that “due to North Korea's
threatening rhetoric and destabilizing behavior,” the United States threatening rhetoric and destabilizing behavior,” the United States ~~stands~~stood with its allies by taking with its allies by taking
defensive steps such as deploying the highly effective THAAD antimissile unit to the Republic of defensive steps such as deploying the highly effective THAAD antimissile unit to the Republic of
Korea, to protect its people and U.S. troops stationed there.Korea, to protect its people and U.S. troops stationed there.43
Germany. Forty-nine U.S. Army helicopters, as well as trucks and other support equipment from the
~~10th Combat Aviation Brigade (CAB), arrived in Europe to begin a nine-month rotation in support of~~
~~Operation Atlantic Resolve in February 2017. The equipment arriving by ship in the Port of~~
~~Bremerhaven, Germany, on February 11 included UH-60 Black Hawk and CH-47F Chinook~~
~~helicopters. An additional 20 helicopters are scheduled to arrive later in the month according to~~
~~Army Command Sergeant Major Steven DiGeorgio, command sergeant major of the 10th CAB. The~~
~~battalion departed from Fort Drum, New York, in January. Soldiers who arrived with the equipment~~

3945 40 The White House. Office of the Press Secretary. “Letter from the President—War Powers Resolution,” October 14, 2016, at https://obamawhitehouse.archives.gov/the-press-office/2016/10/14/letter-president-war-powers-resolution. 41 Army Public Affairs, “Department of the Army announces 1st Brigade Combat Team, 1st Armored Division Army Public Affairs, “Department of the Army announces 1st Brigade Combat Team, 1st Armored Division
Deployment,” December 8, 2016, at https://www.army.mil/article/179366/Deployment,” December 8, 2016, at https://www.army.mil/article/179366/
department_of_the_army_announces_1st_brigade_combat_team_1st_armored_division_deployment. department_of_the_army_announces_1st_brigade_combat_team_1st_armored_division_deployment.
4042 DOD, “Department of Defense Press Briefing by Pentagon Press Secretary Peter Cook in the Pentagon Briefing DOD, “Department of Defense Press Briefing by Pentagon Press Secretary Peter Cook in the Pentagon Briefing
Room,” news transcript, January 5, 2017, at Room,” news transcript, January 5, 2017, at
https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1042944/department-of-defense-press-briefing-by-https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1042944/department-of-defense-press-briefing-by-
pentagon-press-secretary-peter-cook-in/. See also, “Eucom Commander: U.S. Armored Brigade’s Deployment to pentagon-press-secretary-peter-cook-in/. See also, “Eucom Commander: U.S. Armored Brigade’s Deployment to
Poland ‘Significant’,” January 12, 2017, at https://www.defense.gov/Explore/News/Article/Article/1048463/eucom-Poland ‘Significant’,” January 12, 2017, at https://www.defense.gov/Explore/News/Article/Article/1048463/eucom-
commander-us-armored-brigades-deployment-to-poland-significant/. commander-us-armored-brigades-deployment-to-poland-significant/.
4143 David Vergun, “Task Force Commander Describes Assisting Iraqi Troops in Drive on Mosul,” Army News Service, David Vergun, “Task Force Commander Describes Assisting Iraqi Troops in Drive on Mosul,” Army News Service,
May 4, 2017, at https://www.defense.gov/Explore/News/Article/Article/1172442/task-force-commander-describes-May 4, 2017, at https://www.defense.gov/Explore/News/Article/Article/1172442/task-force-commander-describes-
assisting-iraqi-troops-in-drive-on-mosul/. assisting-iraqi-troops-in-drive-on-mosul/.
4244 Navy Petty Officer 2nd Class Brittney Cannady, “Continuing Promise Mission Provides Aid in Honduras,” DOD Navy Petty Officer 2nd Class Brittney Cannady, “Continuing Promise Mission Provides Aid in Honduras,” DOD
News, February 28, 2017, at https://www.defense.gov/Explore/News/Article/Article/1097313/continuing-promise-News, February 28, 2017, at https://www.defense.gov/Explore/News/Article/Article/1097313/continuing-promise-
mission-provides-aid-in-honduras/. mission-provides-aid-in-honduras/.
4345 DOD, “Remarks by Secretary Mattis and Defense Minister Han in Seoul, Republic of Korea,” news transcript, DOD, “Remarks by Secretary Mattis and Defense Minister Han in Seoul, Republic of Korea,” news transcript,
February 3, 2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1070902/remarks-by-February 3, 2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1070902/remarks-by-
secretary-mattis-and-defense-minister-han-in-seoul-republic-of-korea/. secretary-mattis-and-defense-minister-han-in-seoul-republic-of-korea/.
Congressional Research Service Congressional Research Service
36 36

Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~2023 Germany. Forty-nine U.S. Army helicopters, as well as trucks and other support equipment from the 10th Combat Aviation Brigade (CAB), arrived in Europe to begin a nine-month rotation in support of Operation Atlantic Resolve in February 2017. The equipment arriving by ship in the Port of Bremerhaven, Germany, on February 11 included UH-60 Black Hawk and CH-47F Chinook helicopters. An additional 20 helicopters were scheduled to arrive later that month according to Army Command Sergeant Major Steven DiGeorgio, command sergeant major of the 10th CAB. The battalion departed from Fort Drum, New York, in January. Soldiers who arrived with the equipment

prepared it for delivery to staging bases throughout Eastern Europe for a nine-month rotation to prepared it for delivery to staging bases throughout Eastern Europe for a nine-month rotation to
train with NATO partners. “A large proportion of this brigade train with NATO partners. “A large proportion of this brigade ~~wil~~ would go to Katterbach and Il esheim, go to Katterbach and Il esheim,
Germany,” said Army Major General Duane Gamble, the 21st Theater Sustainment Command Germany,” said Army Major General Duane Gamble, the 21st Theater Sustainment Command
commander. Advance teams arrived in Il esheim on February 8, and about 2,000 soldiers commander. Advance teams arrived in Il esheim on February 8, and about 2,000 soldiers ~~are~~were
scheduled to be stationed there and in nearby Ansbach.scheduled to be stationed there and in nearby Ansbach.4446
Romania. On February 16, 2017, soldiers, tanks, and M88 recovery vehicles from the 1st Battalion, 8th On February 16, 2017, soldiers, tanks, and M88 recovery vehicles from the 1st Battalion, 8th
Infantry Regiment’s “Fighting Eagles” arrived in support of Operation Atlantic Resolve. More than 350 Infantry Regiment’s “Fighting Eagles” arrived in support of Operation Atlantic Resolve. More than 350
U.S. soldiers arrived with another 150 set to arrive before the end of February. They unloaded M1A2 U.S. soldiers arrived with another 150 set to arrive before the end of February. They unloaded M1A2
Abrams tanks from the first train that arrived February 14 to an eastern Romanian airbase located Abrams tanks from the first train that arrived February 14 to an eastern Romanian airbase located
about 12 miles away from the Black Sea.about 12 miles away from the Black Sea.4547
Honduras. An opening ceremony in Trujil o, Honduras, on February 21 marked the start of the second An opening ceremony in Trujil o, Honduras, on February 21 marked the start of the second
mission stop for Continuing Promise 2017. Continuing Promise 17 is a SOUTHCOM-sponsored and mission stop for Continuing Promise 2017. Continuing Promise 17 is a SOUTHCOM-sponsored and
U.S. Naval Forces Southern/U.S. 4th Fleet-conducted deployment to conduct civil-military operations U.S. Naval Forces Southern/U.S. 4th Fleet-conducted deployment to conduct civil-military operations
including humanitarian assistance, training engagements and medical, dental, and veterinary support to including humanitarian assistance, training engagements and medical, dental, and veterinary support to
show U.S. support and commitment to Central and South America.show U.S. support and commitment to Central and South America.4648

Germany. On February 22, 2017, Air Force Air Mobility Command C-5 Galaxy transports delivered On February 22, 2017, Air Force Air Mobility Command C-5 Galaxy transports delivered
AH-64 Apache helicopters to Ramstein Air Base, Germany, and AH-64 Apache helicopters to Ramstein Air Base, Germany, and ~~are~~were expected to deliver UH-60 Black expected to deliver UH-60 Black
Hawks to Latvia at the end the month as part of Operation Atlantic Resolve. The Apache helicopters Hawks to Latvia at the end the month as part of Operation Atlantic Resolve. The Apache helicopters
~~are~~were based out of Fort Bliss, Texas, and the Black Hawks are based at Fort Drum, New York. They based out of Fort Bliss, Texas, and the Black Hawks are based at Fort Drum, New York. They ~~are~~
were deployed to Europe on a nine-month rotation in support of Operation Atlantic Resolve. Some deployed to Europe on a nine-month rotation in support of Operation Atlantic Resolve. Some
helicopters helicopters ~~are~~were being airlifted to various areas across Europe, while other equipment being airlifted to various areas across Europe, while other equipment iswas moved by rail. moved by rail.
The combat aviation brigade The combat aviation brigade ~~wil bring~~would have brought nearly 2,200 troops and about 50 Black Hawk, 10 Chinook, nearly 2,200 troops and about 50 Black Hawk, 10 Chinook,
and 24 Apache helicopters to Germany, Latvia, and Romania.and 24 Apache helicopters to Germany, Latvia, and Romania.4749
Germany. On February 24, 2017, members of the Iowa Air National Guard's 185th Air Refueling Wing On February 24, 2017, members of the Iowa Air National Guard's 185th Air Refueling Wing
based in Sioux City, Iowa, based in Sioux City, Iowa, ~~are~~were refueling NATO Airborne Warning and Control System aircraft while refueling NATO Airborne Warning and Control System aircraft while
assigned here. Approximately 40 members from the 185th assigned here. Approximately 40 members from the 185th ~~are~~would be in Germany for two weeks supporting in Germany for two weeks supporting
NATO missions. The 185th NATO missions. The 185th ~~wil~~ would remain in Germany until the end of the week and remain in Germany until the end of the week and ~~wil~~ would be fol owed by be fol owed by
another Air Guard unit from Topeka, Kansas.another Air Guard unit from Topeka, Kansas.4850
Greece. Eight UH-60 Black Hawk helicopters and more than 70 other pieces of equipment arrived at Eight UH-60 Black Hawk helicopters and more than 70 other pieces of equipment arrived at
the Port of Thessaloniki on February 25the Port of Thessaloniki on February 25, 2017, as part of the 10th Combat Aviation Brigade’s nine-month as part of the 10th Combat Aviation Brigade’s nine-month
rotational deployment in support of Operation Atlantic Resolve. The helicopters arriving in Greece rotational deployment in support of Operation Atlantic Resolve. The helicopters arriving in Greece
~~are~~were part of a European theater rotation that part of a European theater rotation that ~~includes~~included armor and air assets that began arriving in armor and air assets that began arriving in
January. The troops January. The troops ~~wil~~ would train with the United States’ allies and partners as well as train with the United States’ allies and partners as well as ~~respond to crises,~~
~~should it be required. This is the first ful aviation regionally allocated force to OAR and U.S. Army~~
~~Europe.49~~
Syria. On March 10, 2017, during a DOD press conference, General Robert Neller was asked about
~~the reported 400 marines sent to Syria, but he would not discuss ongoing operations.50 Defense~~

44 46 DOD News, “U.S. Helicopters Arrive in Europe for Atlantic Resolve Duty,” U.S. European Command News DOD News, “U.S. Helicopters Arrive in Europe for Atlantic Resolve Duty,” U.S. European Command News
Release, February 14, 2017, at https://www.defense.gov/News/Article/Article/1082735/us-helicopters-arrive-in-europe-Release, February 14, 2017, at https://www.defense.gov/News/Article/Article/1082735/us-helicopters-arrive-in-europe-
for-atlantic-resolve-duty/. for-atlantic-resolve-duty/.
4547 Army 1st Lt. Samuel Jolley, “U.S. Soldiers, Armored Vehicles Arrive in Romania,” DOD News, February 16, 2017, Army 1st Lt. Samuel Jolley, “U.S. Soldiers, Armored Vehicles Arrive in Romania,” DOD News, February 16, 2017,
at https://www.defense.gov/Explore/News/Article/Article/1085924/us-soldiers-armored-vehicles-arrive-in-romania/. at https://www.defense.gov/Explore/News/Article/Article/1085924/us-soldiers-armored-vehicles-arrive-in-romania/.
4648 Navy Petty Officer 2nd Class Brittney Cannady, “Continuing Promise Mission Provides Aid in Honduras,” DOD Navy Petty Officer 2nd Class Brittney Cannady, “Continuing Promise Mission Provides Aid in Honduras,” DOD
News, February 28, 2017, at https://www.defense.gov/News/Article/Article/1097313/continuing-promise-mission-News, February 28, 2017, at https://www.defense.gov/News/Article/Article/1097313/continuing-promise-mission-
provides-aid-in-honduras/. provides-aid-in-honduras/.
4749 DOD News, “Air Force Delivers Army Helicopters to Europe,” U.S. European Command News Release, February DOD News, “Air Force Delivers Army Helicopters to Europe,” U.S. European Command News Release, February
22, 2017, at https://www.defense.gov/News/Article/Article/1090074/air-force-delivers-army-helicopters-to-europe/. 22, 2017, at https://www.defense.gov/News/Article/Article/1090074/air-force-delivers-army-helicopters-to-europe/.
4850 Air Force Staff Sgt. Daniel Ter Haar, “Iowa Air Guard Refueling Wing Supports NATO Missions,” February 24, Air Force Staff Sgt. Daniel Ter Haar, “Iowa Air Guard Refueling Wing Supports NATO Missions,” February 24,
2017, at https://www.defense.gov/News/Article/Article/1093676/iowa-air-guard-refueling-wing-supports-nato-2017, at https://www.defense.gov/News/Article/Article/1093676/iowa-air-guard-refueling-wing-supports-nato-
missions/. missions/.
~~49 Army Spc. Kelsey Little, “Black Hawks Arrive in Greece,” U.S. Army Europe, February 27, 2017, at~~
~~https://www.defense.gov/Explore/News/Article/Article/1096363/black-hawks-arrive-in-greece/.~~
~~50 DOD, “Department of Defense Press Briefing by Gen. Neller in the Pentagon Briefing Room,” news transcript,~~
~~March 10, 2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1110404/department-of-~~
~~Congressional Research Service~~
37

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 37 Instances of Use of United States Armed Forces Abroad, 1798-2023 responded to crises. This was the first ful aviation regionally allocated force to OAR and U.S. Army Europe.51 Syria. On March 10, 2017, during a DOD press conference, General Robert Neller was asked about the reported 400 marines sent to Syria, but he would not discuss ongoing operations.52 Defense officials announced the day before that about 400 marines and Army rangers were deployed to Syria officials announced the day before that about 400 marines and Army rangers were deployed to Syria
to assist in the fight against the Islamic State.to assist in the fight against the Islamic State.5153
Peru. On March 30, 2017, the State Department announced that the United States has helped with On March 30, 2017, the State Department announced that the United States has helped with
flood relief support since the disaster began in Peru. The United States has allocated more than flood relief support since the disaster began in Peru. The United States has allocated more than
$775,000, along with in-kind assistance, to support a humanitarian response. Four U.S. disaster $775,000, along with in-kind assistance, to support a humanitarian response. Four U.S. disaster
assistance teams assistance teams ~~are~~were currently on the ground to support the Peruvian government’s response efforts currently on the ground to support the Peruvian government’s response efforts
and to help provide water, improved sanitation, and hygiene assistance. The United States and to help provide water, improved sanitation, and hygiene assistance. The United States ~~has~~ had also also
provided 10 helicopters, which are supporting humanitarian relief operations.provided 10 helicopters, which are supporting humanitarian relief operations.5254
Afghanistan. A group of citizen airmen from the 507th Security Forces Squadron deployed March 3 A group of citizen airmen from the 507th Security Forces Squadron deployed March 3, 2017, to to
Kandahar Air Base, Afghanistan, to support the Afghan air force in its fight against insurgents in Kandahar Air Base, Afghanistan, to support the Afghan air force in its fight against insurgents in
support of NATO’s Resolute Support mission. For the next six months, the team support of NATO’s Resolute Support mission. For the next six months, the team ~~wil~~ would be part of a fly-be part of a fly-
away security team. Air Force FAST teams away security team. Air Force FAST teams ~~are~~were made up of security forces airmen who travel with made up of security forces airmen who travel with
aircraft to provide extra security around unsecured overseas airfields.aircraft to provide extra security around unsecured overseas airfields.5355
Uruguay. On April 6, 2017, a Navy P-8 aircraft deployed from Jacksonvil e, Florida, to Uruguay to join On April 6, 2017, a Navy P-8 aircraft deployed from Jacksonvil e, Florida, to Uruguay to join
an international effort in search of the Republic of Korea vessel, the an international effort in search of the Republic of Korea vessel, the Stellar Daisy..5456
Korea. On May 19, 2017, the Army announced the summer 2017 deployment of almost 4,000 soldiers On May 19, 2017, the Army announced the summer 2017 deployment of almost 4,000 soldiers
from the 2nd Armored Brigade Combat Team, 1st Cavalry Division, stationed at Fort Hood, Texas, to from the 2nd Armored Brigade Combat Team, 1st Cavalry Division, stationed at Fort Hood, Texas, to
the Republic of Korea. As part of the regular rotation of forces, the 2nd Armored Brigade Combat the Republic of Korea. As part of the regular rotation of forces, the 2nd Armored Brigade Combat
Team Team ~~wil~~ would replace the 1st Armored Brigade Combat Team, 1st Infantry Division and support the replace the 1st Armored Brigade Combat Team, 1st Infantry Division and support the
United States Forces-Korea’s commitment.United States Forces-Korea’s commitment.5557
Iraq and Kuwait. The Department of the Army announced on May 19, 2017, the deployment of 250 The Department of the Army announced on May 19, 2017, the deployment of 250
soldiers from the III Corps Headquarters stationed at Fort Hood, Texas, in support of Operation soldiers from the III Corps Headquarters stationed at Fort Hood, Texas, in support of Operation
Inherent Resolve.Inherent Resolve.5658
Egypt. In late May, a Minnesota National Guard infantry battalion handed over responsibility for the In late May, a Minnesota National Guard infantry battalion handed over responsibility for the
Multinational Force and Observers mission to an incoming Massachusetts National Guard infantry Multinational Force and Observers mission to an incoming Massachusetts National Guard infantry
battalion.battalion.5759
England. Two B-2 Spirit stealth bombers arrived on June 9 Two B-2 Spirit stealth bombers arrived on June 9, 2017, from Whiteman Air Force Base, Missouri, from Whiteman Air Force Base, Missouri,
joining B-1B Lancer and B-52 H Stratofortress bombers already there in theater assurance joining B-1B Lancer and B-52 H Stratofortress bombers already there in theater assurance ~~and~~
~~deterrence operations. Three B-52Hs from Barksdale Air Force Base, Louisiana, and three B-1Bs~~
~~from El sworth Air Force Base, South Dakota, along with about 800 airmen, are supporting exercises~~
~~Saber Strike and BALTOPS in the European theater. While not actively participating in ongoing~~
~~regional exercises, the B-2s join the other Air Force Global Strike Command assets in support of~~
~~recurring bomber assurance and deterrence operations.58~~

51 Army Spc. Kelsey Little, “Black Hawks Arrive in Greece,” U.S. Army Europe, February 27, 2017, at https://www.defense.gov/Explore/News/Article/Article/1096363/black-hawks-arrive-in-greece/. 52 DOD, “Department of Defense Press Briefing by Gen. Neller in the Pentagon Briefing Room,” news transcript, March 10, 2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1110404/department-of-defense-press-briefing-by-gen-neller-in-the-pentagon-briefing-room/. defense-press-briefing-by-gen-neller-in-the-pentagon-briefing-room/.
5153 Tara Copp, “Hundreds of Marines, Army Rangers deploy to Syria in the fight against Islamic State,” Tara Copp, “Hundreds of Marines, Army Rangers deploy to Syria in the fight against Islamic State,” Stars and
Stripes, March 9, 2017, at https://www.stripes.com/news/middle-east/hundreds-of-marines-army-rangers-deploy-to-, March 9, 2017, at https://www.stripes.com/news/middle-east/hundreds-of-marines-army-rangers-deploy-to-
syria-in-the-fight-against-islamic-state-1.457959. syria-in-the-fight-against-islamic-state-1.457959.
5254 Mark C. Toner, “Flood Relief Support to Peru,” U.S. Department of State, Press Statement, March 30, 2017, at Mark C. Toner, “Flood Relief Support to Peru,” U.S. Department of State, Press Statement, March 30, 2017, at
[archived] https://2017-2021.state.gov/flood-relief-support-to-peru/index.html. [archived] https://2017-2021.state.gov/flood-relief-support-to-peru/index.html.
5355 Air Force Maj. Jon Quinlan, “Air Force Reservists Serve in Afghanistan,” DOD News, April 25, 2017, at Air Force Maj. Jon Quinlan, “Air Force Reservists Serve in Afghanistan,” DOD News, April 25, 2017, at
https://www.defense.gov/Explore/News/Article/Article/1162267/air-force-reservists-serve-in-afghanistan/. https://www.defense.gov/Explore/News/Article/Article/1162267/air-force-reservists-serve-in-afghanistan/.
5456 DOD, “Department of Defense Briefing by Admiral Tidd in the Pentagon Briefing Room,” news transcript, April 6, DOD, “Department of Defense Briefing by Admiral Tidd in the Pentagon Briefing Room,” news transcript, April 6,
2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1144531/department-of-defense-briefing-2017, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1144531/department-of-defense-briefing-
by-admiral-tidd-in-the-pentagon-briefing-room/. by-admiral-tidd-in-the-pentagon-briefing-room/.
5557 Charlsy Panzino, “Army Announces deployments for almost 4,000 soldiers,” Charlsy Panzino, “Army Announces deployments for almost 4,000 soldiers,” Army Times, May 19, 2017, at , May 19, 2017, at
https://www.armytimes.com/news/your-army/2017/05/19/army-announces-deployments-for-almost-4000-soldiers/. https://www.armytimes.com/news/your-army/2017/05/19/army-announces-deployments-for-almost-4000-soldiers/.
5658 U.S. Army Public Affairs, “Department of the Army announces III Corps deployment,” May 19, 2017, at U.S. Army Public Affairs, “Department of the Army announces III Corps deployment,” May 19, 2017, at
https://www.army.mil/article/188064/department_of_the_army_announces_iii_corps_deployment. https://www.army.mil/article/188064/department_of_the_army_announces_iii_corps_deployment.
5759 Army Sgt. 1st Class Jim Greenhill, “National Guard Contributes to U.S.-Egypt Strategic Partnership,” DOD News, Army Sgt. 1st Class Jim Greenhill, “National Guard Contributes to U.S.-Egypt Strategic Partnership,” DOD News,
May 25, 2017, at https://www.defense.gov/News/Article/Article/1194485/national-guard-contributes-to-us-egypt-May 25, 2017, at https://www.defense.gov/News/Article/Article/1194485/national-guard-contributes-to-us-egypt-
strategic-partnership/. strategic-partnership/.
~~58 Air Force Maj. Jeffrey M. Bishop, “B-2 Spirit Stealth Bombers Arrive in England,” U.S. Air Forces in Europe-Air~~
~~Forces Africa, June 13, 2017, at https://www.defense.gov/Explore/News/Article/Article/1211848/.~~
~~Congressional Research Service~~
38

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 38 Instances of Use of United States Armed Forces Abroad, 1798-2023 and deterrence operations. Three B-52Hs from Barksdale Air Force Base, Louisiana, and three B-1Bs from El sworth Air Force Base, South Dakota, along with about 800 airmen, are supporting exercises Saber Strike and BALTOPS in the European theater. While not actively participating in ongoing regional exercises, the B-2s join the other Air Force Global Strike Command assets in support of recurring bomber assurance and deterrence operations.60 Sri Lanka. The guided-missile cruiser USS The guided-missile cruiser USS Lake Erie arrived to Colombo, Sri Lanka, on June 11 arrived to Colombo, Sri Lanka, on June 11 to
, 2017, to support humanitarian assistance operations in the wake of severe flooding and landslides that support humanitarian assistance operations in the wake of severe flooding and landslides that
devastated many regions of the country.devastated many regions of the country.5961
England. In a long-standing total force partnership between Air Force Reserve Command and U.S. Air In a long-standing total force partnership between Air Force Reserve Command and U.S. Air
Forces in Europe, members of the 507th Air Refueling Wing are augmenting the 100th Air Refueling Forces in Europe, members of the 507th Air Refueling Wing are augmenting the 100th Air Refueling
Wing to provide KC-135R Stratotanker air refueling support to the European theater of operations Wing to provide KC-135R Stratotanker air refueling support to the European theater of operations
in a deployment July 1-29, 2017. Airmen, along with their KC-135s, rotate monthly from various in a deployment July 1-29, 2017. Airmen, along with their KC-135s, rotate monthly from various
AFRC units to support the 100th ARW's robust refueling requirements. The 507th ARW AFRC units to support the 100th ARW's robust refueling requirements. The 507th ARW ~~wil operate~~
would operate three rotations during 2017. In addition to the 507th ARW, Reserve crews from the 459th ARW, Joint three rotations during 2017. In addition to the 507th ARW, Reserve crews from the 459th ARW, Joint
Base Andrews, Maryland; 452nd Air Mobility Wing, March Air Reserve Base, California; 916th ARW, Base Andrews, Maryland; 452nd Air Mobility Wing, March Air Reserve Base, California; 916th ARW,
Seymour Johnson Air Force Base, North Carolina; 931st ARW, McConnell Air Force Base, Kansas; Seymour Johnson Air Force Base, North Carolina; 931st ARW, McConnell Air Force Base, Kansas;
940th ARW, Beale Air Force Base, California; and the 434th ARW, Grissom Air Reserve Base, Indiana, 940th ARW, Beale Air Force Base, California; and the 434th ARW, Grissom Air Reserve Base, Indiana,
have deployed to support USAFE aerial refueling requirements.have deployed to support USAFE aerial refueling requirements.6062
Southwest Asia. On September 5, the Army's XVIII Airborne Corps, led by Lieutenant General Stephen On September 5, the Army's XVIII Airborne Corps, led by Lieutenant General Stephen
J. Townsend, completed their deployment as the headquarters of CJRF-OIR and returned to home J. Townsend, completed their deployment as the headquarters of CJRF-OIR and returned to home
station at Fort Bragg, North Carolina. The mission continues under the III Corps out of Fort Hood, station at Fort Bragg, North Carolina. The mission continues under the III Corps out of Fort Hood,
Texas, led by Lieutenant General Paul E. Funk II.Texas, led by Lieutenant General Paul E. Funk II.6163
Caribbean. Joint Task Force-Leeward Islands, commanded by Marine Colonel Mike Samarov, deployed Joint Task Force-Leeward Islands, commanded by Marine Colonel Mike Samarov, deployed
to Puerto Rico on September 9 to support the evacuation of U.S. citizens: Provided assistance to to Puerto Rico on September 9 to support the evacuation of U.S. citizens: Provided assistance to
French and Dutch military partners in the island of St. Maarten after Hurricanes Irma and Maria. The French and Dutch military partners in the island of St. Maarten after Hurricanes Irma and Maria. The
task force purified more than 21,000 gallons of water, and distributed more than 7,000 gallons; task force purified more than 21,000 gallons of water, and distributed more than 7,000 gallons;
delivered nine water purification systems; as well as high-capacity forklifts and vehicles to help the delivered nine water purification systems; as well as high-capacity forklifts and vehicles to help the
Dutch and French governments offload and distribute aid on the island.Dutch and French governments offload and distribute aid on the island.6264
Afghanistan. In September In September 2017, Secretary Mattis announced over 3,000 troops , Secretary Mattis announced over 3,000 troops ~~wil~~ would deploy to Afghanistan.deploy to Afghanistan.6365
Dominica. U.S. servicemembers with Joint Task Force-Leeward Islands began evacuating U.S. citizens U.S. servicemembers with Joint Task Force-Leeward Islands began evacuating U.S. citizens
stranded on the Caribbean island of Dominica on September 24, stranded on the Caribbean island of Dominica on September 24, 2017, in the aftermath of Hurricane Maria. in the aftermath of Hurricane Maria.
With the use of helicopters from the U.S. Army, Navy, and Marine Corps, more than 100 U.S. With the use of helicopters from the U.S. Army, Navy, and Marine Corps, more than 100 U.S.
citizens citizens ~~have been~~were evacuated to the nearby islands of Guadeloupe and Martinique. In order to evacuated to the nearby islands of Guadeloupe and Martinique. In order to
facilitate the evacuation process, U.S. facilitate the evacuation process, U.S. ~~Marines~~marines with the task force created an evacuation control with the task force created an evacuation control
center at the Douglas-Charles Airport in Dominica.center at the Douglas-Charles Airport in Dominica.64
Niger. The Pentagon announced on October 5 that three U.S. servicemembers were kil ed and two
~~wounded while conducting an advise-and-assist mission.65 Two days later, AFRICOM announced the~~
~~recovery of a fourth U.S. servicemember kil ed in the attack.66 See CRS Report R44995,~~ ~~Niger:~~
~~Frequently Asked Questions About the October 2017 Attack on U.S. Soldiers, coordinated by Alexis Arieff.~~

5966 60 Air Force Maj. Jeffrey M. Bishop, “B-2 Spirit Stealth Bombers Arrive in England,” U.S. Air Forces in Europe-Air Forces Africa, June 13, 2017, at https://www.defense.gov/Explore/News/Article/Article/1211848/. 61 DOD News, “U.S. Service Members Aid Sri Lanka after Devastating Floods,” June 13, 2017, at DOD News, “U.S. Service Members Aid Sri Lanka after Devastating Floods,” June 13, 2017, at
https://www.defense.gov/News/Article/Article/1211928/us-service-members-aid-sri-lanka-after-devastating-floods/. https://www.defense.gov/News/Article/Article/1211928/us-service-members-aid-sri-lanka-after-devastating-floods/.
6062 Air Force Maj. Jon Quinlan, “Total Force Airmen Maximize Refueling Capacity in Europe,” July 27, 2017, at Air Force Maj. Jon Quinlan, “Total Force Airmen Maximize Refueling Capacity in Europe,” July 27, 2017, at
https://www.af.mil/News/Article-Display/Article/1260214/total-force-airmen-maximize-refueling-capacity-in-europe/. https://www.af.mil/News/Article-Display/Article/1260214/total-force-airmen-maximize-refueling-capacity-in-europe/.
6163 Terri Moon Cronk, “Command Changes in Fight against ISIS, Mission Does Not, Official Says,” DOD News, Terri Moon Cronk, “Command Changes in Fight against ISIS, Mission Does Not, Official Says,” DOD News,
September 7, 2017, at https://www.defense.gov/Explore/News/Article/Article/1302390/command-changes-in-fight-September 7, 2017, at https://www.defense.gov/Explore/News/Article/Article/1302390/command-changes-in-fight-
against-isis-mission-does-not-official-says/. against-isis-mission-does-not-official-says/.
6264 Admiral Kurt Tidd, Commander, Southern Command, “Remarks by Admiral Tidd in a Roundtable Discussion,” Admiral Kurt Tidd, Commander, Southern Command, “Remarks by Admiral Tidd in a Roundtable Discussion,”
Transcript, September 21, 2017, at https://www.southcom.mil/Media/Speeches-Transcripts/Article/1321338/transcript-Transcript, September 21, 2017, at https://www.southcom.mil/Media/Speeches-Transcripts/Article/1321338/transcript-
remarks-by-admiral-tidd-in-a-roundtable-discussion/. remarks-by-admiral-tidd-in-a-roundtable-discussion/.
6365 DOD News Transcript, “Media Availability with Secretary Mattis,” Press Operations, September 18, 2017, at DOD News Transcript, “Media Availability with Secretary Mattis,” Press Operations, September 18, 2017, at
https://www.defense.gov/News/Transcripts/Transcript-View/Article/1315507/media-availability-with-secretary-mattis/. https://www.defense.gov/News/Transcripts/Transcript-View/Article/1315507/media-availability-with-secretary-mattis/.
6466 Gunnery Sgt. Zachary Dyer, “Joint Task Force - Leeward Islands begins evacuation of U.S. citizens in Dominica,” Gunnery Sgt. Zachary Dyer, “Joint Task Force - Leeward Islands begins evacuation of U.S. citizens in Dominica,”
U.S. Southern Command, September 26, 2017, at http://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/U.S. Southern Command, September 26, 2017, at http://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/
1324494/joint-task-force-leeward-islands-begins-evacuation-of-us-citizens-in-dominica/. 1324494/joint-task-force-leeward-islands-begins-evacuation-of-us-citizens-in-dominica/.
~~65 DOD News, “Three U.S. Troops Killed, Two Wounded in Niger,” October 5, 2017, at~~
~~https://www.defense.gov/Explore/News/Article/Article/1336092/three-us-troops-killed-two-wounded-in-niger/.~~
~~66 DOD News, “Africom Announces Death of 4th Service Member in Niger Attack,” October 6, 2017, at~~
~~https://www.defense.gov/Explore/News/Article/Article/1337250/africom-announces-death-of-4th-service-member-in-~~
~~niger-attack/.~~
~~Congressional Research Service~~
39

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

~~Afghanistan, Syria, Africa, and elsewhere. On October 10~~Congressional Research Service 39 Instances of Use of United States Armed Forces Abroad, 1798-2023 Niger. The Pentagon announced on October 5, 2017, that three U.S. servicemembers were kil ed and two wounded while conducting an advise-and-assist mission.67 Two days later, AFRICOM announced the recovery of a fourth U.S. servicemember kil ed in the attack.68 See CRS Report R44995, Niger: Frequently Asked Questions About the October 2017 Attack on U.S. Soldiers, coordinated by Alexis Arieff. Afghanistan, Syria, Africa, and elsewhere. On October 10, 2017, the Army announced rol ing out its first , the Army announced rol ing out its first
conventional units designed to carry out so-called train and assist missions that are the centerpiece of conventional units designed to carry out so-called train and assist missions that are the centerpiece of
U.S. military strategy in these regions.U.S. military strategy in these regions.6769 See also CRS In Focus IF10675, See also CRS In Focus IF10675, Army Security Force Assistance
Brigades (SFABs), by Andrew Feickert. , by Andrew Feickert.
Haiti. On November 18, Air Force Reservists from the Air Force Reserve Command's 514th Air On November 18, Air Force Reservists from the Air Force Reserve Command's 514th Air
Mobility Wing delivered 15 pallets of food, weighing 76,410 pounds, to Haiti as part of a humanitarian Mobility Wing delivered 15 pallets of food, weighing 76,410 pounds, to Haiti as part of a humanitarian
mission from November 16 to November 19.mission from November 16 to November 19.6870
Poland. The second nine-month rotation of the Atlantic Resolve Sustainment Task Force, attached to . The second nine-month rotation of the Atlantic Resolve Sustainment Task Force, attached to
the 16th Sustainment Brigade, began earlier the 16th Sustainment Brigade, began earlier ~~this month~~in November 2017, as the incoming rotation commenced as the incoming rotation commenced
reception, staging, onward movement, and integration operations in Powidz and Poznan, Poland, reception, staging, onward movement, and integration operations in Powidz and Poznan, Poland,
beginning December 2017.beginning December 2017.6971
Iraq and Syria, on December 6, 2017, the Pentagon announced that there , on December 6, 2017, the Pentagon announced that there ~~are~~were 5,200 U.S. troops in Iraq 5,200 U.S. troops in Iraq
and 2,000 U.S. troops in Syria, and those numbers are trending down in compliance with Defense and 2,000 U.S. troops in Syria, and those numbers are trending down in compliance with Defense
Secretary Mattis’ direction to give the American people a better idea of the commitment of U.S. Secretary Mattis’ direction to give the American people a better idea of the commitment of U.S.
forces in the region.forces in the region.7072
2018 2018
Afghanistan. In February 2018, the Army deployed its first conventional units designed to carry out the In February 2018, the Army deployed its first conventional units designed to carry out the
branch’s new emphasis on “advise-and-assist” missions, as stated by Army Chief of Staff Mark A. branch’s new emphasis on “advise-and-assist” missions, as stated by Army Chief of Staff Mark A.
Mil ey in October 2017.Mil ey in October 2017.7173 The 1st Security Force Assistance Brigade (SFAB), stationed at Fort Benning, The 1st Security Force Assistance Brigade (SFAB), stationed at Fort Benning,
Georgia, Georgia, ~~wil~~ would provide training and advising assistance to Afghan National Security Forces. The Fort provide training and advising assistance to Afghan National Security Forces. The Fort
Benning-based 1st SFAB Benning-based 1st SFAB iswas scheduled to return home in early 2019. See also CRS In Focus IF10675, scheduled to return home in early 2019. See also CRS In Focus IF10675,
Army Security Force Assistance Brigades (SFABs), by Andrew Feickert. , by Andrew Feickert.
Syria. On April 13, 2018, President . On April 13, 2018, President Donald Trump directed the U.S. military to conduct operations, in Trump directed the U.S. military to conduct operations, in
consonance with its allies (France and the United Kingdom), to destroy the Syrian chemical weapons consonance with its allies (France and the United Kingdom), to destroy the Syrian chemical weapons
~~research, development, and production capabilities. On April 15, 2018, President Trump sent a letter~~
~~to the Speaker of the House, citing the War Powers Resolution, regarding the missile attack.72~~

67 67 DOD News, “Three U.S. Troops Killed, Two Wounded in Niger,” October 5, 2017, at https://www.defense.gov/Explore/News/Article/Article/1336092/three-us-troops-killed-two-wounded-in-niger/. 68 DOD News, “Africom Announces Death of 4th Service Member in Niger Attack,” October 6, 2017, at https://www.defense.gov/Explore/News/Article/Article/1337250/africom-announces-death-of-4th-service-member-in-niger-attack/. 69 Gary Sheftick, “First security force assistance brigade training for deployment,” Army News Service, October 16, Gary Sheftick, “First security force assistance brigade training for deployment,” Army News Service, October 16,
2017, at https://www.army.mil/article/195178/first_security_force_assistance_brigade_training_for_deployment; Mark 2017, at https://www.army.mil/article/195178/first_security_force_assistance_brigade_training_for_deployment; Mark
C. Olsen, “Air Force Reservists Deliver Humanitarian Aid to Haiti,” DOD News, November 27, 2017, at C. Olsen, “Air Force Reservists Deliver Humanitarian Aid to Haiti,” DOD News, November 27, 2017, at
https://www.defense.gov/Explore/News/Article/Article/1380804/air-force-reservists-deliver-humanitarian-aid-to-haiti/. https://www.defense.gov/Explore/News/Article/Article/1380804/air-force-reservists-deliver-humanitarian-aid-to-haiti/.
6769 Army 1st Lt. Mark Schneider, 16th Sustainment Brigade, “Second Troop Rotation Arrives in Poland to Support Army 1st Lt. Mark Schneider, 16th Sustainment Brigade, “Second Troop Rotation Arrives in Poland to Support
Atlantic Resolve,” DOD News, December 27, 2017, at Atlantic Resolve,” DOD News, December 27, 2017, at
https://www.defense.gov/Explore/News/Article/Article/1404729/second-troop-rotation-arrives-in-poland-to-support-https://www.defense.gov/Explore/News/Article/Article/1404729/second-troop-rotation-arrives-in-poland-to-support-
atlantic-resolve/. atlantic-resolve/.
6769 Jim Garamone, “Pentagon Announces Troop Levels in Iraq, Syria,” DOD News, December 6, 2017, at Jim Garamone, “Pentagon Announces Troop Levels in Iraq, Syria,” DOD News, December 6, 2017, at
https://www.defense.gov/https://www.defense.gov/~~Explore/News~~News/News-Stories/Article/Article/1390079/pentagon-announces-troop-levels-in-iraq-/Article/Article/1390079/pentagon-announces-troop-levels-in-iraq-
~~syria/army.mil/article/195178/first_security_force_assistance_brigade_training_for_deployment~~syria/. .
6870 Air Force Master Sgt. Mark C. Olsen, “Air Force Reservists Deliver Humanitarian Aid to Haiti,” DOD News, Air Force Master Sgt. Mark C. Olsen, “Air Force Reservists Deliver Humanitarian Aid to Haiti,” DOD News,
November 27, 2017, at https://www.defense.gov/Explore/News/Article/Article/1380804/air-force-reservists-deliver-November 27, 2017, at https://www.defense.gov/Explore/News/Article/Article/1380804/air-force-reservists-deliver-
humanitarian-aid-to-haiti/. humanitarian-aid-to-haiti/.
6971 Army 1st Lt. Mark Schneider, 16th Sustainment Brigade, “Second Troop Rotation Arrives in Poland to Support Army 1st Lt. Mark Schneider, 16th Sustainment Brigade, “Second Troop Rotation Arrives in Poland to Support
Atlantic Resolve,” DOD News, December 27, 2017, at Atlantic Resolve,” DOD News, December 27, 2017, at
https://www.defense.gov/Explore/News/Article/Article/1404729/second-troop-rotation-arrives-in-poland-to-support-https://www.defense.gov/Explore/News/Article/Article/1404729/second-troop-rotation-arrives-in-poland-to-support-
atlantic-resolve/. atlantic-resolve/.
7072 Jim Garamone, “Pentagon Announces Troop Levels in Iraq, Syria,” DOD News, December 6, 2017, at Jim Garamone, “Pentagon Announces Troop Levels in Iraq, Syria,” DOD News, December 6, 2017, at
https://www.defense.gov/Explore/News/Article/Article/1390079/pentagon-announces-troop-levels-in-iraq-syria/. https://www.defense.gov/Explore/News/Article/Article/1390079/pentagon-announces-troop-levels-in-iraq-syria/.
7173 Phillip Walter Wellman, “First troops among new front-line adviser brigade arrive in Afghanistan,” Phillip Walter Wellman, “First troops among new front-line adviser brigade arrive in Afghanistan,” Stars and
Stripes, February 22, 2018, at https://www.stripes.com/news/first-troops-among-new-front-line-adviser-brigade-arrive-, February 22, 2018, at https://www.stripes.com/news/first-troops-among-new-front-line-adviser-brigade-arrive-
in-afghanistan-1.513060; and CRS In Focus IF10675, in-afghanistan-1.513060; and CRS In Focus IF10675, Army Security Force Assistance Brigades (SFABs), by Andrew , by Andrew
Feickert. Feickert.
~~72 DOD, “Statement by Secretary James N. Mattis on Syria,” Release No: NR-113-18, April 13, 2018, at~~
~~https://www.defense.gov/Newsroom/Releases/Release/Article/1493610/statement-by-secretary-james-n-mattis-on-~~
~~syria/; and The White House, Office of the Press Secretary, “Letter to Congressional Leaders on United States Military~~
~~Operations in Syria,” April 15, 2018, at https://www.govinfo.gov/content/pkg/DCPD-201800243/pdf/DCPD-~~
~~201800243.pdf.~~
~~Congressional Research Service~~
40

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 40 Instances of Use of United States Armed Forces Abroad, 1798-2023 research, development, and production capabilities. On April 15, 2018, President Trump sent a letter to the U.S. Speaker of the House, citing the War Powers Resolution, regarding the missile attack.74 Tanzania. From May to July 2018, U.S. Army soldiers with the 404th Civil Affairs Battalion, attached to . From May to July 2018, U.S. Army soldiers with the 404th Civil Affairs Battalion, attached to
Combined Joint Task Force Horn of Africa, Combined Joint Task Force Horn of Africa, ~~have~~ conducted training in countering il icit trafficking for conducted training in countering il icit trafficking for
Tanzania Wildlife Management Authority game wardens. The operations Tanzania Wildlife Management Authority game wardens. The operations ~~are~~were to deter poachers and to deter poachers and
prevent extremist organizations from profiting from il icit activities.prevent extremist organizations from profiting from il icit activities.7375
Central and South America. The U.S. Navy deployed USNS The U.S. Navy deployed USNS Spearhead (T-EPF 1) in support of Southern (T-EPF 1) in support of Southern
Partnership Station 2018 to the Caribbean, Central and South America to conduct subject matter Partnership Station 2018 to the Caribbean, Central and South America to conduct subject matter
expert exchanges and water well construction projects from July to October 2018. Southern expert exchanges and water well construction projects from July to October 2018. Southern
Partnership Station Partnership Station is, an annual series of U.S. Navy deployments an annual series of U.S. Navy deployments, focused on exchanges with regional focused on exchanges with regional
partner nation militaries and security forces. partner nation militaries and security forces. ~~This year's deployment is to visit~~The 2018 deployment visited Panama, Colombia, Panama, Colombia,
Honduras, El Salvador, and Trinidad and Tobago to work alongside those nations' military forces, Honduras, El Salvador, and Trinidad and Tobago to work alongside those nations' military forces,
security forces, civilian health professionals, and other governmental agencies.security forces, civilian health professionals, and other governmental agencies.7476 Southern Partnership Southern Partnership
Station 2018 Station 2018 iswas a U.S. SOUTHCOM directed deployment planned by U.S. Naval Forces Southern a U.S. SOUTHCOM directed deployment planned by U.S. Naval Forces Southern
Command /U.S. 4th Fleet (USNAVSO/FOURTHFLT) and conducted by deployed adaptive force Command /U.S. 4th Fleet (USNAVSO/FOURTHFLT) and conducted by deployed adaptive force
packages (AFPs) under the direction of the Destroyer Squadron (DESRON) 40 staff. packages (AFPs) under the direction of the Destroyer Squadron (DESRON) 40 staff.
Thailand. The United States sent a search and rescue team to the Tham Luang cave in northern The United States sent a search and rescue team to the Tham Luang cave in northern
Thailand at the request of the Thai government to assist in the rescue mission of a soccer team and Thailand at the request of the Thai government to assist in the rescue mission of a soccer team and
their coach, who entered the cave on June 23their coach, who entered the cave on June 23, 2018, and were trapped by floodwaters. DOD personnel and were trapped by floodwaters. DOD personnel
staged equipment and prepared safe passage for the remaining players and coach. The DOD effort staged equipment and prepared safe passage for the remaining players and coach. The DOD effort
consisted of 42 deployed military personnel and one member from the Joint U.S. Military Advisory consisted of 42 deployed military personnel and one member from the Joint U.S. Military Advisory
Group Thailand, said Army Col. Rob Manning.Group Thailand, said Army Col. Rob Manning.7577
Ukraine. On July 20, 2018, DOD announced that they On July 20, 2018, DOD announced that they ~~wil~~ would provide $200 mil ion to Ukraine in security provide $200 mil ion to Ukraine in security
cooperation funds for additional training, equipment, and advisory efforts to build the defensive cooperation funds for additional training, equipment, and advisory efforts to build the defensive
capacity of Ukraine’s forces. The additional funds capacity of Ukraine’s forces. The additional funds ~~are~~were to provide equipment to aid ongoing training to provide equipment to aid ongoing training
programs and operational needs, including “capabilities to enhance Ukraine’s command and programs and operational needs, including “capabilities to enhance Ukraine’s command and control, control,
situational awareness systems, secure communications, military mobility, night vision, and military situational awareness systems, secure communications, military mobility, night vision, and military
medical treatment. A timeline for delivery and fielding of equipment wil be determined at a later medical treatment. A timeline for delivery and fielding of equipment wil be determined at a later
date.”date.”7678
Iceland. In an August 6, 2018, statement, DOD announced the 493rd Expeditionary Fighter Squadron . In an August 6, 2018, statement, DOD announced the 493rd Expeditionary Fighter Squadron
began flying operations over Iceland as part of NATO’s Icelandic Air Surveillance mission and began flying operations over Iceland as part of NATO’s Icelandic Air Surveillance mission and iswas
providing resources to help reinforce the nation’s security and preparedness.providing resources to help reinforce the nation’s security and preparedness.7779 More than 250 airmen More than 250 airmen
~~are~~were assigned to U.S. Air Forces in Europe-Air Forces Africa and 13 F-15C/D Eagles assigned to U.S. Air Forces in Europe-Air Forces Africa and 13 F-15C/D Eagles ~~are~~were deployed from deployed from
Royal Air Force Lakenheath, England, with additional support from U.S. airmen assigned to Aviano Air Royal Air Force Lakenheath, England, with additional support from U.S. airmen assigned to Aviano Air
Base, Italy. Four of the aircraft are tasked with direct support of the Icelandic Air Base, Italy. Four of the aircraft are tasked with direct support of the Icelandic Air ~~Surveil ance~~Surveillance mission, mission,
while the additional nine aircraft while the additional nine aircraft ~~wil~~ would conduct training missions. conduct training missions.
Europe and Africa. Nearly 6,500Nearly 6,500 sailors from the Harry S. Truman Carrier Strike Group (HSTCSG) sailors from the Harry S. Truman Carrier Strike Group (HSTCSG)
returned to Naval Station Norfolk on December 15 and 16, 2018, after completing an eight-month returned to Naval Station Norfolk on December 15 and 16, 2018, after completing an eight-month
~~deployment across the 2nd, 5th, and 6th Fleet areas of operation.78 HSTCSG deployed on April 11,~~
~~2018, for a regularly scheduled deployment “as part of the ongoing rotation of forward deployed~~
~~forces to support maritime security operations and operate in international waters across the globe.”~~
~~In mid-July, several strike group units returned to Norfolk, Virginia, for a port visit, but departed in~~

73 74 DOD, “Statement by Secretary James N. Mattis on Syria,” Release No: NR-113-18, April 13, 2018, at https://www.defense.gov/Newsroom/Releases/Release/Article/1493610/statement-by-secretary-james-n-mattis-on-syria/; and The White House, Office of the Press Secretary, “Letter to Congressional Leaders on United States Military Operations in Syria,” April 15, 2018, at https://www.govinfo.gov/content/pkg/DCPD-201800243/pdf/DCPD-201800243.pdf. 75 DOD, “Civil Affairs Soldiers Enhance Tanzanian Operations to Counter Illicit Trafficking,” August 17, 2018, at DOD, “Civil Affairs Soldiers Enhance Tanzanian Operations to Counter Illicit Trafficking,” August 17, 2018, at
https://www.defense.gov/Explore/News/Article/Article/1605309/civil-affairs-soldiers-enhance-tanzanian-operations-to-https://www.defense.gov/Explore/News/Article/Article/1605309/civil-affairs-soldiers-enhance-tanzanian-operations-to-
counter-illicit-traffick/. counter-illicit-traffick/.
7476 U.S. 4th Fleet Public Affairs, “Spearhead Deploys, Marking the Start of Southern Partnership Station,” News, July U.S. 4th Fleet Public Affairs, “Spearhead Deploys, Marking the Start of Southern Partnership Station,” News, July
26, 2018, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/1584882/spearhead-deploys-marking-the-26, 2018, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/1584882/spearhead-deploys-marking-the-
start-of-southern-partnership-station/. start-of-southern-partnership-station/.
7577 Lisa Ferdinando, “DoD Personnel Assist in Thai Cave Rescue Operations,” DOD News, July 9, 2018, at Lisa Ferdinando, “DoD Personnel Assist in Thai Cave Rescue Operations,” DOD News, July 9, 2018, at
https://www.defense.gov/Explore/News/Article/Article/1569955/dod-personnel-assist-in-thai-cave-rescue-operations/. https://www.defense.gov/Explore/News/Article/Article/1569955/dod-personnel-assist-in-thai-cave-rescue-operations/.
7678 DOD, “DOD Announces $200M to Ukraine,” New Release No: NR-222-18, July 20, 2018, at DOD, “DOD Announces $200M to Ukraine,” New Release No: NR-222-18, July 20, 2018, at
https://www.defense.gov/Newsroom/Releases/Release/Article/1580606/dod-announces-200m-to-ukraine/. https://www.defense.gov/Newsroom/Releases/Release/Article/1580606/dod-announces-200m-to-ukraine/.
7779 Air Force Staff Sgt. Alex Echols, “U.S. Air Force Pilots Help Guard Iceland’s Skies” DOD News, August 6, 2018, at Air Force Staff Sgt. Alex Echols, “U.S. Air Force Pilots Help Guard Iceland’s Skies” DOD News, August 6, 2018, at
https://www.defense.gov/https://www.defense.gov/~~Explore/News~~News/News-Stories/Article/Article/1594242/us-air-force-pilots-help-guard-icelands-skies/./Article/Article/1594242/us-air-force-pilots-help-guard-icelands-skies/.
~~78 U.S. Fleet Forces Command Public Affairs, “USS Harry S. Truman Carrier Strike Group Returning Home,” Press~~
~~Release, NNS181212-07, December 12, 2018.~~
~~Congressional Research Service~~
41

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

~~late August to continue their deployment.79~~ Congressional Research Service 41 Instances of Use of United States Armed Forces Abroad, 1798-2023 deployment across the 2nd, 5th, and 6th Fleet areas of operation.80 HSTCSG deployed on April 11, 2018, for a regularly scheduled deployment “as part of the ongoing rotation of forward deployed forces to support maritime security operations and operate in international waters across the globe.” In mid-July, several strike group units returned to Norfolk, Virginia, for a port visit, but departed in late August to continue their deployment.81 The strike group’s ships and aircraft conducted a variety The strike group’s ships and aircraft conducted a variety
of missions, including forward naval presence, maritime security operations, theater security of missions, including forward naval presence, maritime security operations, theater security
cooperation, and participation in numerous bilateral and multilateral operations and exercises to cooperation, and participation in numerous bilateral and multilateral operations and exercises to
include exercises Lightning Handshake 2018, Baltic Operations 2018, and Trident Juncture 2018.include exercises Lightning Handshake 2018, Baltic Operations 2018, and Trident Juncture 2018.
Central and South America. ~~A team comprised of~~On October 20, 2018, a team comprising more than 900 personnel more than 900 personnel, embarked aboard the embarked aboard the
Navy's Military Sealift Command hospital ship USNS Navy's Military Sealift Command hospital ship USNS Comfort, commenced their first mission stop in commenced their first mission stop in
Esmeraldas, EcuadorEsmeraldas, Ecuador~~, on October 20, 2018~~, as part of the U.S. Southern Command’s Enduring , as part of the U.S. Southern Command’s Enduring
Promise initiative.Promise initiative.8082 The stop The stop iswas part of an 11-week medical support mission to Central and South part of an 11-week medical support mission to Central and South
America with stops in Ecuador, Colombia, Peru, and Honduras. The embarked medical team America with stops in Ecuador, Colombia, Peru, and Honduras. The embarked medical team ~~wil~~
~~provide~~provided care on board and at land-based medical sites. care on board and at land-based medical sites.
Afghanistan. On October 18On October 18, 2018, the Department of the Army announced the winter 2018-2019 rotation , the Department of the Army announced the winter 2018-2019 rotation
to Europe and Afghanistan of three 1st Infantry Division units stationed at Fort Riley, Kansas. The 1st to Europe and Afghanistan of three 1st Infantry Division units stationed at Fort Riley, Kansas. The 1st
Brigade Combat Team, 1st Infantry Division Brigade Combat Team, 1st Infantry Division iswas to replace 1st Armored Brigade Combat Team, 1st to replace 1st Armored Brigade Combat Team, 1st
Cavalry Division stationed at Fort Hood, Texas, as part of a regular rotation of forces to Europe in Cavalry Division stationed at Fort Hood, Texas, as part of a regular rotation of forces to Europe in
support of Operation Atlantic Resolve. The 1st Infantry Division Combat Aviation Brigade (CAB) support of Operation Atlantic Resolve. The 1st Infantry Division Combat Aviation Brigade (CAB) iswas to to
replace 4th Infantry Division CAB, stationed at Fort Carson, Colorado, as part of a regular rotation of replace 4th Infantry Division CAB, stationed at Fort Carson, Colorado, as part of a regular rotation of
forces to Europe in support of Operation Atlantic Resolve. The 1st Infantry Division Sustainment forces to Europe in support of Operation Atlantic Resolve. The 1st Infantry Division Sustainment
Brigade Brigade iswas to replace the 101st Airborne Division Sustainment Brigade stationed at Fort Campbell, to replace the 101st Airborne Division Sustainment Brigade stationed at Fort Campbell,
Kentucky, as Kentucky, as a part of a regular rotation of forces to Afghanistan in support of Operation Freedom's part of a regular rotation of forces to Afghanistan in support of Operation Freedom's
Sentinel.Sentinel.8183 Also on October 18, the Army announced that the 2nd SFAB, based in Fort Bragg, North Also on October 18, the Army announced that the 2nd SFAB, based in Fort Bragg, North
Carolina, and currently in training, Carolina, and currently in training, iswas scheduled to replace the 1st SFAB in Afghanistan in spring scheduled to replace the 1st SFAB in Afghanistan in spring
2019.2019.8284 See CRS In Focus IF10675, See CRS In Focus IF10675, Army Security Force Assistance Brigades (SFABs), by Andrew Feickert. , by Andrew Feickert.
Yemen. The United States The United States ~~plans~~planned to col aborate on building up legitimate Yemeni forces “to defend the to col aborate on building up legitimate Yemeni forces “to defend the
Yemeni people, secure their country’s borders, and contribute to counter Al Qaeda and ISIS efforts Yemeni people, secure their country’s borders, and contribute to counter Al Qaeda and ISIS efforts
in Yemen and the region,” stated Secretary of Defense James in Yemen and the region,” stated Secretary of Defense James N. Mattis on November 9, 2018. The Mattis on November 9, 2018. The
United States United States ~~is to also~~was also to continue working with the coalition and Yemen to “expand urgent continue working with the coalition and Yemen to “expand urgent
humanitarian efforts throughout the country,” as well as work to “support the United Nations’ humanitarian efforts throughout the country,” as well as work to “support the United Nations’
ongoing efforts on this new phase in Yemen.”ongoing efforts on this new phase in Yemen.”8385
Africa. On November 15, 2018, DOD announced the realignment of Counter-Violent Extremist On November 15, 2018, DOD announced the realignment of Counter-Violent Extremist
Organization personnel operating in U.S. Africa Command Organization personnel operating in U.S. Africa Command (AFRICOM) to support priorities outlined in the to support priorities outlined in the
National Defense Strategy. Over the next several years, the realignment National Defense Strategy. Over the next several years, the realignment ~~projects~~projected a reduction of about a reduction of about
~~10% of the 7,200 military forces serving in Africa Command.84~~
Syria. The U.S. military is setting up several observation posts in Syria beside the border with Turkey.
~~In a press briefing held on November 21, 2018, Defense Secretary James. N. Mattis stated that the~~
~~purpose of these posts is to provide Turkey with military intelligence of any terrorist elements~~
~~moving into Turkey from Syria. The posts are to be manned by troops who are already operating in~~

7910% of the 7,200 military forces serving in AFRICOM.86 80 U.S. Fleet Forces Command Public Affairs, “USS Harry S. Truman Carrier Strike Group Returning Home,” Press Release, NNS181212-07, December 12, 2018, at https://news.usni.org/2018/12/11/truman-strike-group-headed-home-after-6th-fleet-dynamic-deployment. 81 Navy Lt. j.g. Marc Rockwellpate, “USS Harry S. Truman Carrier Strike Group Begins Operations in U.S. 6th Fleet,” Navy Lt. j.g. Marc Rockwellpate, “USS Harry S. Truman Carrier Strike Group Begins Operations in U.S. 6th Fleet,”
DOD News, September 19, 2018, https://www.defense.gov/Explore/News/Article/Article/1638784/uss-harry-s-truman-DOD News, September 19, 2018, https://www.defense.gov/Explore/News/Article/Article/1638784/uss-harry-s-truman-
carrier-strike-group-begins-operations-in-us-6th-fleet/. carrier-strike-group-begins-operations-in-us-6th-fleet/.
8082 Seaman James Wilson, “USNS Comfort Begins Medical Site Set-up in Ecuador,” U.S. Southern Command, October Seaman James Wilson, “USNS Comfort Begins Medical Site Set-up in Ecuador,” U.S. Southern Command, October
22, 2018, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/1667970/usns-comfort-begins-medical-22, 2018, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/1667970/usns-comfort-begins-medical-
site-set-up-in-ecuador/#:~:text=ESMERALDAS%2C%20Ecuador%20%E2%80%93%20A%20team%20comprised,20. site-set-up-in-ecuador/#:~:text=ESMERALDAS%2C%20Ecuador%20%E2%80%93%20A%20team%20comprised,20.
8183 U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st Infantry Division units’ rotation,” U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st Infantry Division units’ rotation,”
October 18, 2018, at https://www.army.mil/article/212544/October 18, 2018, at https://www.army.mil/article/212544/
department_of_the_army_announces_upcoming_1st_infantry_division_units_rotation. department_of_the_army_announces_upcoming_1st_infantry_division_units_rotation.
8284 Matthew Cox, “Deployments Announced: Army to Send Next Advisory Unit to Afghanistan in 2019,” Military.com, Matthew Cox, “Deployments Announced: Army to Send Next Advisory Unit to Afghanistan in 2019,” Military.com,
October 18, 2018, at https://www.military.com/daily-news/2018/10/18/deployments-announced-army-send-next-October 18, 2018, at https://www.military.com/daily-news/2018/10/18/deployments-announced-army-send-next-
advisory-unit-afghanistan-2019.html. advisory-unit-afghanistan-2019.html.
8385 “Statement by Secretary of Defense James N. Mattis on Refueling Saudi Coalition Aircraft,” Press Release No: NR- “Statement by Secretary of Defense James N. Mattis on Refueling Saudi Coalition Aircraft,” Press Release No: NR-
318-18, November 9, 2018, at https://www.defense.gov/Newsroom/Releases/Release/Article/1688151/statement-by-318-18, November 9, 2018, at https://www.defense.gov/Newsroom/Releases/Release/Article/1688151/statement-by-
secretary-of-defense-james-n-mattis-on-refueling-saudi-coalition-a/. secretary-of-defense-james-n-mattis-on-refueling-saudi-coalition-a/.
8486 DOD News, “Pentagon Announces Force Optimization,” Press Release No: NR-325-18, November 15, 2018, at DOD News, “Pentagon Announces Force Optimization,” Press Release No: NR-325-18, November 15, 2018, at
https://www.defense.gov/Newsroom/Releases/Release/Article/1691538/pentagon-announces-force-optimization/. https://www.defense.gov/Newsroom/Releases/Release/Article/1691538/pentagon-announces-force-optimization/.
Congressional Research Service Congressional Research Service
42 42

Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~2023 Syria. The U.S. military had set up several observation posts in Syria beside the border with Turkey. In a press briefing held on November 21, 2018, Defense Secretary James. N. Mattis stated that the purpose of these posts was to provide Turkey with military intelligence of any terrorist elements moving into Turkey from Syria. The posts were manned by troops already operating in

the area in the fight against the Islamic State of Iraq and Syria. There the area in the fight against the Islamic State of Iraq and Syria. There ~~would not be an~~was no increase in increase in
troop levels to accomplish this mission.troop levels to accomplish this mission.8587
Honduras. On December 10, 2018, DOD reported that the USNS . On December 10, 2018, DOD reported that the USNS Comfort provided humanitarian provided humanitarian
assistance in several Central and South American countries by treating more than 20,000 civilians and assistance in several Central and South American countries by treating more than 20,000 civilians and
performing over 600 surgeries.performing over 600 surgeries.8688 Included were a number of refugees from Venezuela. Included were a number of refugees from Venezuela.
2019 2019
Syria. In early January 2019, U.S. forces began withdrawing equipment—but not personnel—from In early January 2019, U.S. forces began withdrawing equipment—but not personnel—from
Syria. In late February, the White House announced that the United States would leave approximately Syria. In late February, the White House announced that the United States would leave approximately
400 troops in Syria, reversing President Trump’s withdrawal announcement from December 2018.400 troops in Syria, reversing President Trump’s withdrawal announcement from December 2018.8789
South Korea. As part of a regular rotation of forces in support of the Republic of Korea, the . As part of a regular rotation of forces in support of the Republic of Korea, the
Department of the Army announced on March 29, 2019Department of the Army announced on March 29, 2019, that the 3rd Armored Brigade Combat Team, that the 3rd Armored Brigade Combat Team,
1st Cavalry Division, stationed at Fort Hood, Texas 1st Cavalry Division, stationed at Fort Hood, Texas iswas to replace the 3rd Armored Brigade Combat to replace the 3rd Armored Brigade Combat
Team, 1st Armored Division.Team, 1st Armored Division.8890
Iraq. On March 29, 2019, the Department of the Army announced summer 2019 deployment to Iraq . On March 29, 2019, the Department of the Army announced summer 2019 deployment to Iraq
of the 1st Stryker Brigade Combat Team, 25th Infantry Division, U.S. Army Alaska, stationed at Fort of the 1st Stryker Brigade Combat Team, 25th Infantry Division, U.S. Army Alaska, stationed at Fort
Wainwright, Alaska. The 1st Stryker Brigade Combat Team Wainwright, Alaska. The 1st Stryker Brigade Combat Team iswas to replace the 1st Brigade Combat to replace the 1st Brigade Combat
Team, 101st Airborne Division, as part of a regular rotation of forces in support of Operation Team, 101st Airborne Division, as part of a regular rotation of forces in support of Operation
Inherent Resolve.Inherent Resolve.8991 On May 31, 2019, the Department of the Army announced the fall 2019 On May 31, 2019, the Department of the Army announced the fall 2019
deployment to Iraq of the III Corps Headquarters, stationed at Fort Hood, Texas. As part of the deployment to Iraq of the III Corps Headquarters, stationed at Fort Hood, Texas. As part of the
regular rotation of forces, III Corps Headquarters regular rotation of forces, III Corps Headquarters iswas to replace XVIII Airborne Corps Headquarters, to replace XVIII Airborne Corps Headquarters,
as the headquarters of the Combined Joint Task Force-Operation Inherent Resolve.as the headquarters of the Combined Joint Task Force-Operation Inherent Resolve.9092
Afghanistan. On March 29, 2019, the Department of the Army announced the summer 2019 rotation On March 29, 2019, the Department of the Army announced the summer 2019 rotation
to Afghanistan of the 3rd Brigade Combat Team, 82nd Airborne Division, stationed at Fort Bragg, to Afghanistan of the 3rd Brigade Combat Team, 82nd Airborne Division, stationed at Fort Bragg,
North Carolina.North Carolina.9193 The 3rd Brigade Combat Team The 3rd Brigade Combat Team iswas to replace the 2nd Brigade Combat Team, 10th to replace the 2nd Brigade Combat Team, 10th
Mountain Division. On May 31, 2019, the Department of the Army announced an upcoming 2019 Mountain Division. On May 31, 2019, the Department of the Army announced an upcoming 2019
rotation to Afghanistan of the 1st Armored Division Headquarters stationed at Fort Bliss, Texas. The rotation to Afghanistan of the 1st Armored Division Headquarters stationed at Fort Bliss, Texas. The
~~1st Armored Division Headquarters is to replace the 4th Infantry Division Headquarters. Both~~
~~replacements are part of a regular rotation of forces in support of Operation Freedom's Sentinel.92~~

85 87 David Vergun, “U.S. Setting up Observation Posts on Syria-Turkey Border,” DOD News, November 21, 2018, at David Vergun, “U.S. Setting up Observation Posts on Syria-Turkey Border,” DOD News, November 21, 2018, at
https://www.defense.gov/Explore/News/Article/Article/1696781/us-setting-up-observation-posts-on-syria-turkey-https://www.defense.gov/Explore/News/Article/Article/1696781/us-setting-up-observation-posts-on-syria-turkey-
border/; and Terri Moon Cronk, “U.S. Setting Up Observation Posts in Syria to Keep ISIS From Entering Turkey,” border/; and Terri Moon Cronk, “U.S. Setting Up Observation Posts in Syria to Keep ISIS From Entering Turkey,”
November 27, 2018, at https://www.defense.gov/Explore/News/Article/Article/1699161/us-setting-up-observation-November 27, 2018, at https://www.defense.gov/Explore/News/Article/Article/1699161/us-setting-up-observation-
posts-in-syria-to-keep-isis-from-entering-turkey/. posts-in-syria-to-keep-isis-from-entering-turkey/.
8688 David Vergun, “DOD Spokesman: As U.S. Provides Aid to Central, South America, Russia Sends Bombers,” DOD David Vergun, “DOD Spokesman: As U.S. Provides Aid to Central, South America, Russia Sends Bombers,” DOD
News, December 10, 2018, at https://www.defense.gov/Explore/News/Article/Article/1709295/dod-spokesman-as-us-News, December 10, 2018, at https://www.defense.gov/Explore/News/Article/Article/1709295/dod-spokesman-as-us-
provides-aid-to-central-south-america-russia-sends-bombers/. provides-aid-to-central-south-america-russia-sends-bombers/.
8789 DOD, “Acting Secretary Shanahan and General Dunford Media Availability Prior to Honors Parade,” News DOD, “Acting Secretary Shanahan and General Dunford Media Availability Prior to Honors Parade,” News
transcripts, February 22, 2019, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1765690/acting-transcripts, February 22, 2019, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1765690/acting-
secretary-shanahan-and-general-dunford-media-availability-prior-to-honor/. secretary-shanahan-and-general-dunford-media-availability-prior-to-honor/.
8890 U.S. Army Public Affairs, “Department of the Army announces upcoming 3rd ABCT, 1st Cavalry Division, unit U.S. Army Public Affairs, “Department of the Army announces upcoming 3rd ABCT, 1st Cavalry Division, unit
rotation March 29, 2019, at https://www.army.mil/article/219419/rotation March 29, 2019, at https://www.army.mil/article/219419/
department_of_the_army_announces_upcoming_3rd_abct_1st_cavalry_division_unit_rotation. department_of_the_army_announces_upcoming_3rd_abct_1st_cavalry_division_unit_rotation.
8991 U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st BCT, 25th ID, U.S. Army Alaska U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st BCT, 25th ID, U.S. Army Alaska
unit rotation,” unit rotation,” ~~March 29~~April 1, 2019, at https://www.army.mil/article/219416/, 2019, at https://www.army.mil/article/219416/
department_of_the_army_announces_upcoming_1st_bct_25th_id_us_army_alaska_unit_rotation. department_of_the_army_announces_upcoming_1st_bct_25th_id_us_army_alaska_unit_rotation.
9092 U.S. Army of Public Affairs, “Department of the Army announces upcoming III Corps Headquarters deployment,” U.S. Army of Public Affairs, “Department of the Army announces upcoming III Corps Headquarters deployment,”
May 31, 2019, at https://www.army.mil/article/221344/May 31, 2019, at https://www.army.mil/article/221344/
department_of_the_army_announces_upcoming_iii_corps_headquarters_deployment. department_of_the_army_announces_upcoming_iii_corps_headquarters_deployment.
9193 U.S. Army of Public Affairs, “Department of the Army announces upcoming 3rd BCT, 82nd Airborne Division, unit U.S. Army of Public Affairs, “Department of the Army announces upcoming 3rd BCT, 82nd Airborne Division, unit
rotation,” March 29, 2019, at https://www.army.mil/article/219420/rotation,” March 29, 2019, at https://www.army.mil/article/219420/
department_of_the_army_announces_upcoming_3rd_bct_82nd_airborne_division_unit_rotation. department_of_the_army_announces_upcoming_3rd_bct_82nd_airborne_division_unit_rotation.
~~92 U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st Armored Division Headquarters unit~~
~~rotation,” May 31, 2019, at https://www.army.mil/article/221341/~~
~~department_of_the_army_announces_upcoming_1st_armored_division_headquarters_unit_rotation.~~
Congressional Research Service Congressional Research Service
43 43

Instances of Use of United States Armed Forces Abroad, 1798-~~2021~~

2023 1st Armored Division Headquarters was to replace the 4th Infantry Division Headquarters. Both replacements were part of a regular rotation of forces in support of Operation Freedom's Sentinel.94 Japan. From April 9 to April 17, U.S. Navy P-8A maritime patrol aircraft and a guided-missile From April 9 to April 17, U.S. Navy P-8A maritime patrol aircraft and a guided-missile
destroyer USSdestroyer USS Stethem (DDG 63) assisted Japanese-led search and rescue efforts for the pilot of a (DDG 63) assisted Japanese-led search and rescue efforts for the pilot of a
Japan Air Self Defense Force (JASDF) F-35A, missing since April 9. The P-8A aircraft Japan Air Self Defense Force (JASDF) F-35A, missing since April 9. The P-8A aircraft ~~are~~were assigned to assigned to
Patrol Squadron (VP) 8 and Patrol Squadron (VP) 5. Both squadrons Patrol Squadron (VP) 8 and Patrol Squadron (VP) 5. Both squadrons ~~are~~were homeported in Jacksonvil e, homeported in Jacksonvil e,
FloridaFlorida, and and ~~are~~were on rotational deployments to the 7th Fleet out of Misawa, Japan. The USS on rotational deployments to the 7th Fleet out of Misawa, Japan. The USS Stethem is
was forward-deployed to Yokosuka, Japan (it was announced on April 26 that it would shift its forward-deployed to Yokosuka, Japan (it was announced on April 26 that it would shift its ~~homeport~~
home port to San Diego for its midlife modernization).to San Diego for its midlife modernization).9395 In late April, the United States In late April, the United States ~~had~~ dispatched the dispatched the
salvage team aboard the commercial diving support construction vessel DSCV salvage team aboard the commercial diving support construction vessel DSCV Van Gogh, unmanned , unmanned
underwater vehicles and a TPL-25 “black box detector.” On May 8, after locating debris from the underwater vehicles and a TPL-25 “black box detector.” On May 8, after locating debris from the
downed JASDF F-35A, the U.S. Navy ended its mission.downed JASDF F-35A, the U.S. Navy ended its mission.9496
Lithuania.. The United States and Lithuania The United States and Lithuania ~~have~~ signed a defense-cooperation agreement on April 2, signed a defense-cooperation agreement on April 2,
2019. The five-year agreement 2019. The five-year agreement ~~says~~stated that the United States would send forces to the Baltic states “to the United States would send forces to the Baltic states “to
strengthen deterrence and to catalyze the efforts of Estonia, Latvia and Lithuania to develop their strengthen deterrence and to catalyze the efforts of Estonia, Latvia and Lithuania to develop their
national defense further.” Lithuania’s Defense Ministry national defense further.” Lithuania’s Defense Ministry iswas to provide all necessary support for the to provide all necessary support for the
deployment of U.S. forces.deployment of U.S. forces.9597
Japan. The U.S. Navy announced on April 26, 2019The U.S. Navy announced on April 26, 2019, that the amphibious assault ship USS that the amphibious assault ship USS America (LHA (LHA
6) and landing platform dock USS 6) and landing platform dock USS New Orleans (LPD 18) (LPD 18) ~~wil~~ would become part of the U.S. 7th Fleet become part of the U.S. 7th Fleet
forward-deployed naval forces (FDNF) in Sasebo, Japan. The USS forward-deployed naval forces (FDNF) in Sasebo, Japan. The USS America iswas a new, more-capable a new, more-capable
amphibious assault able to deploy with a heavier configuration of the Joint Strike Fighter (F-35B) as amphibious assault able to deploy with a heavier configuration of the Joint Strike Fighter (F-35B) as
part of an embarked U.S. Marine Corps Air Combat Element (ACE) than its predecessors and serve part of an embarked U.S. Marine Corps Air Combat Element (ACE) than its predecessors and serve
as a light aircraft carrier.as a light aircraft carrier.9698
Indo-Pacific. On May 1, 2019, “about 4,500 sailors and . On May 1, 2019, “about 4,500 sailors and ~~Marines~~marines left San Diego, California for a left San Diego, California for a
scheduled deployment to the Indo-Pacific and Central Command regions” with the Boxer scheduled deployment to the Indo-Pacific and Central Command regions” with the Boxer
Amphibious Ready Group and 11th Marine Expeditionary Unit, including dock landing ship USSAmphibious Ready Group and 11th Marine Expeditionary Unit, including dock landing ship USS
Harper’s Ferry (LSD-49), amphibious transport dock USS (LSD-49), amphibious transport dock USS John P. Murtha (LPD-26), and amphibious (LPD-26), and amphibious
assault ship USSassault ship USS Boxer (LHD-4). (LHD-4).9799
Middle East. On May 10, 2019, the DOD approved the deployment of the On May 10, 2019, the DOD approved the deployment of the USS Arlington and a Patriot and a Patriot
missile defense battery to join the USSmissile defense battery to join the USS Abraham Lincoln carrier strike group and a U.S. Air Force carrier strike group and a U.S. Air Force
bomber task force, which were deployed earlier in that week to the region in response to increasing bomber task force, which were deployed earlier in that week to the region in response to increasing
tensions between the United States and Iran.tensions between the United States and Iran.98100 On May 24, 2019, DOD “approved the deployment of On May 24, 2019, DOD “approved the deployment of
about 1,500 service members and additional capabilities to the Middle East to deter Iranian efforts about 1,500 service members and additional capabilities to the Middle East to deter Iranian efforts to
~~destabilize the region.”99 Adm. Michael Gilday, director of the Joint Staff, clarified in a DOD briefing~~
~~on Iran that the 1,500 service members involve extending the deployment of about 600 troops with~~
~~four Patriot missile batteries already in the region and sending less than 1,000 other service members~~
~~to the Middle East.100 In response to recent attacks on oil tankers in the Gulf of Oman. On June 13,~~

93 94 U.S. Army of Public Affairs, “Department of the Army announces upcoming 1st Armored Division Headquarters unit rotation,” May 31, 2019, at https://www.army.mil/article/221341/department_of_the_army_announces_upcoming_1st_armored_division_headquarters_unit_rotation. 95 U.S. Navy, Commander, Naval Forces Japan Public Affairs, “USS America, USS New Orleans to Forward Deploy to U.S. Navy, Commander, Naval Forces Japan Public Affairs, “USS America, USS New Orleans to Forward Deploy to
Japan; USS Stethem, USS Wasp to Return to U.S.,” Press Release NNS190426-09, April 26, 2019Japan; USS Stethem, USS Wasp to Return to U.S.,” Press Release NNS190426-09, April 26, 2019, at https://www.pacom.mil/Media/News/News-Article-View/Article/1825972/uss-america-uss-new-orleans-to-forward-deploy-to-japan-stethem-and-wasp-return/. 96.
94 U.S. Navy, Commander, U.S. 7th Fleet Public Affairs, “U.S. Navy P-8A and Destroyer Join JSDF Search for U.S. Navy, Commander, U.S. 7th Fleet Public Affairs, “U.S. Navy P-8A and Destroyer Join JSDF Search for
Japanese F-35A Pilot,” Press Release NNS190410-01, April 10, 2019Japanese F-35A Pilot,” Press Release NNS190410-01, April 10, 2019, at https://www.pacom.mil/Media/News/News-Article-View/Article/1811344/us-navy-p-8a-and-destroyer-join-jsdf-search-for-japanese-f-35a-pilot/. 97.
95 DOD, “U.S., Lithuania Detail Roadmap for Cooperation Through 2024,” News, April 2, 2019, at DOD, “U.S., Lithuania Detail Roadmap for Cooperation Through 2024,” News, April 2, 2019, at
https://www.defense.gov/News/News-Stories/Article/Article/1803578/us-lithuania-detail-roadmap-for-cooperation-https://www.defense.gov/News/News-Stories/Article/Article/1803578/us-lithuania-detail-roadmap-for-cooperation-
through-2024/. through-2024/.
9698 U.S. Navy, Commander, Naval Forces Japan Public Affairs, “USS America, USS New Orleans to Forward Deploy to U.S. Navy, Commander, Naval Forces Japan Public Affairs, “USS America, USS New Orleans to Forward Deploy to
Japan; USS Stethem, USS Wasp to Return to U.S.,” Press Release NNS190426-09, April 26, 2019Japan; USS Stethem, USS Wasp to Return to U.S.,” Press Release NNS190426-09, April 26, 2019, at https://www.pacom.mil/Media/News/News-Article-View/Article/1825972/uss-america-uss-new-orleans-to-forward-deploy-to-japan-stethem-and-wasp-return/. 99.
97 U.S. Navy, Commander, U.S. Third Fleet Public Affairs U.S. Navy, Commander, U.S. Third Fleet Public Affairs , “Sailors, Sailors, “Marines of Boxer Amphibious Ready Group Marines of Boxer Amphibious Ready Group
Deploy from San Diego,” Press Release NNS190502-11, May 2, 2019Deploy from San Diego,” Press Release NNS190502-11, May 2, 2019, at https://www.pacom.mil/Media/News/News-Article-View/Article/1834573/sailors-marines-of-boxer-amphibious-ready-group-deploy-from-san-diego/. 100.
98 “Statement from the Department of Defense on Additional Forces to U.S. Central Command,” Press Release No: “Statement from the Department of Defense on Additional Forces to U.S. Central Command,” Press Release No:
NR-116-19, May 10, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1844752/statement-from-NR-116-19, May 10, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1844752/statement-from-
the-department-of-defense-on-additional-forces-to-us-central-com/. the-department-of-defense-on-additional-forces-to-us-central-com/.
~~99 Jim Garamone, “DOD Approves Force Protection Deployment for Middle East,” May 24, 2019, at~~
~~https://www.defense.gov/explore/story/Article/1857913/shanahan-approves-force-protection-deployment-for-middle-~~
~~east/.~~
~~100 DOD, “Department of Defense Briefing on Iran,” news transcript, May 24, 2019, at~~
~~https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1857948/department-of-defense-briefing-on-iran/.~~
~~Congressional Research Service~~
44

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 44 Instances of Use of United States Armed Forces Abroad, 1798-2023 to destabilize the region.”101 Adm. Michael Gilday, director of the Joint Staff, clarified in a DOD briefing on Iran that the 1,500 service members involve extending the deployment of about 600 troops with four Patriot missile batteries already in the region and sending less than 1,000 other service members to the Middle East.102 In response to recent attacks on oil tankers in the Gulf of Oman. On June 13, 2019, two oil tankers were attacked near the Strait of Hormuz while they transited the Gulf of 2019, two oil tankers were attacked near the Strait of Hormuz while they transited the Gulf of
Oman. The Japanese Kokuka Courageous and Norwegian Front Altair were attacked, allegedly with Oman. The Japanese Kokuka Courageous and Norwegian Front Altair were attacked, allegedly with
limpet mines or flying objects, sustaining fire damage. The limpet mines or flying objects, sustaining fire damage. The USU.S. 5th Fleet, based in Bahrain, said it had 5th Fleet, based in Bahrain, said it had
sent the USS sent the USS Bainbridge to assist. to assist.~~101~~103 On June 17, 2019, then-Acting Defense Secretary Patrick M. On June 17, 2019, then-Acting Defense Secretary Patrick M.
Shanahan announced that the United States would send 1,000 additional troops for defensive Shanahan announced that the United States would send 1,000 additional troops for defensive
purposes to address air, naval, and ground-based threats in the Middle East.purposes to address air, naval, and ground-based threats in the Middle East.~~102~~104 See CRS Report See CRS Report
R45795, R45795, U.S.-Iran Tensions and Implications for U.S. Policy, for more information. , for more information.
Venezuela. The U.S. Navy hospital ship USNS . The U.S. Navy hospital ship USNS Comfort (T-AH 20) deployed in June from Naval Station (T-AH 20) deployed in June from Naval Station
Norfolk to the Caribbean, Central America and South America to conduct a five-month humanitarian Norfolk to the Caribbean, Central America and South America to conduct a five-month humanitarian
medical assistance mission in response to the Venezuela political and economic crisis. On July 3, the medical assistance mission in response to the Venezuela political and economic crisis. On July 3, the
ship finished its first medical mission in Manta, Ecuador. Marking the seventh hospital ship deployment ship finished its first medical mission in Manta, Ecuador. Marking the seventh hospital ship deployment
to the region since 2007, this deployment to the region since 2007, this deployment is was “part of U.S. Southern Command’s Enduring Promise part of U.S. Southern Command’s Enduring Promise
initiative and reflects the United States’ ongoing commitment to friendship, partnership, and solidarity initiative and reflects the United States’ ongoing commitment to friendship, partnership, and solidarity
with partner nations in the Caribbean, Central America and South America.with partner nations in the Caribbean, Central America and South America.~~103~~”105
Poland. On June 12, 2019, President Trump and Polish President Andrzej Duda announced that Poland . On June 12, 2019, President Trump and Polish President Andrzej Duda announced that Poland
~~wil~~ would host 1,000 additional U.S. troops under a new security agreement. With the increase, the total host 1,000 additional U.S. troops under a new security agreement. With the increase, the total
number of U.S. forces typically deployed to the NATO ally as a deterrent to Russia would come to number of U.S. forces typically deployed to the NATO ally as a deterrent to Russia would come to
more than 5,000. According to President Trump, as many as 2,000 troops would be moved from more than 5,000. According to President Trump, as many as 2,000 troops would be moved from
Germany to Poland under the new agreement—without adding to the overall number of U.S. troops Germany to Poland under the new agreement—without adding to the overall number of U.S. troops
in Europe. The new U.S. contingent “would include special operations forces, logistics troops and an in Europe. The new U.S. contingent “would include special operations forces, logistics troops and an
Army division headquarters.” Army division headquarters.” ~~104~~106 The troops would be deployed to Poland on a rotational basis. The troops would be deployed to Poland on a rotational basis.
Saudi Arabia. On September 26, 2019, Secretary of Defense Mark Esper announced the U.S. would . On September 26, 2019, Secretary of Defense Mark Esper announced the U.S. would
deploy approximately 200 support personnel along with one Patriot Battery and four Sentinel deploy approximately 200 support personnel along with one Patriot Battery and four Sentinel
RADARs to augment the kingdom’s air and missile defenses in light of recent attacks.RADARs to augment the kingdom’s air and missile defenses in light of recent attacks.~~105~~107
Europe. On October 4, 2019, U.S Army Europe announced that troops and equipment from 2nd . On October 4, 2019, U.S Army Europe announced that troops and equipment from 2nd
Brigade Combat Team, 1st Cavalry Division, from Fort Hood, Texas, Brigade Combat Team, 1st Cavalry Division, from Fort Hood, Texas, ~~wil~~ would replace 1st Brigade Combat replace 1st Brigade Combat
Team, 1st Infantry Division, from Fort Riley, Kansas, in Vlissingen, Netherlands, Oct. 10-15. The 1st Team, 1st Infantry Division, from Fort Riley, Kansas, in Vlissingen, Netherlands, Oct. 10-15. The 1st
Brigade Combat Team, 1st Infantry Division, served in Europe for nine months in support of the Brigade Combat Team, 1st Infantry Division, served in Europe for nine months in support of the
Atlantic Resolve mission to provide a continuous presence across eastern Europe.Atlantic Resolve mission to provide a continuous presence across eastern Europe.~~106~~
Saudi Arabia. On October 11, 2019, Secretary Esper, at the request of U.S. Central Command
~~(CENTCOM), authorized an additional 3,000 troops that have been extended or authorized within~~
~~the last month; and since May, “DOD has increased the number of forces by approximately 14,000 to~~
~~the U.S. CENTCOM area of responsibility as an investment into regional security.”107~~
Afghanistan and South Korea. On December 5, 2019, the Army announced upcoming deployments to
~~Afghanistan and South Korea for U.S. soldiers from 10th Mountain Division and 1st Infantry Division.~~
~~The 2nd Brigade Combat Team, 1st Infantry Division, out of Fort Riley, Kansas, wil deploy for a winter~~

~~101~~108 101 Jim Garamone, “DOD Approves Force Protection Deployment for Middle East,” May 24, 2019, at https://www.defense.gov/explore/story/Article/1857913/shanahan-approves-force-protection-deployment-for-middle-east/. 102 DOD, “Department of Defense Briefing on Iran,” news transcript, May 24, 2019, at https://www.defense.gov/Newsroom/Transcripts/Transcript/Article/1857948/department-of-defense-briefing-on-iran/. 103 Jim Garamone, “DOD Approves Force Protection Deployment for Middle East,” May 24, 2019, at Jim Garamone, “DOD Approves Force Protection Deployment for Middle East,” May 24, 2019, at
https://www.defense.gov/explore/story/Article/1857913/shanahan-approves-force-protection-deployment-for-middle-https://www.defense.gov/explore/story/Article/1857913/shanahan-approves-force-protection-deployment-for-middle-
east/. east/.
~~102~~104 “Statement from Acting Secretary of Defense Patrick Shanahan on Additional Forces to U.S. Central Command,” “Statement from Acting Secretary of Defense Patrick Shanahan on Additional Forces to U.S. Central Command,”
Press Release No: NR-158-19, June 17, 2019Press Release No: NR-158-19, June 17, 2019.
~~103~~, at https://www.defense.gov/News/Releases/Release/Article/1879076/statement-from-acting-secretary-of-defense-patrick-shanahan-on-additional-force. 105 U.S. Navy, USNS Comfort Public Affairs, “Comfort Completes First Medical Mission of 2019 Deployment in U.S. Navy, USNS Comfort Public Affairs, “Comfort Completes First Medical Mission of 2019 Deployment in
Manta,” Press Release NNS190705-02, July 5, 2019Manta,” Press Release NNS190705-02, July 5, 2019.
~~104~~, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/1896667/comfort-completes-first-medical-mission-of-2019-deployment-in-manta/. 106 Wesley Morgan, “Poland will host 1,000 more US troops, Trump says,” Politico.EU, June 13, 2019, at Wesley Morgan, “Poland will host 1,000 more US troops, Trump says,” Politico.EU, June 13, 2019, at
https://www.politico.eu/article/poland-will-host-1000-more-us-troops-trump-says/. https://www.politico.eu/article/poland-will-host-1000-more-us-troops-trump-says/.
~~105~~107 DOD, “DOD Statement on Deployment of U.S. Forces and Equipment to the Kingdom of Saudi Arabia,” News DOD, “DOD Statement on Deployment of U.S. Forces and Equipment to the Kingdom of Saudi Arabia,” News
Release, September 26, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1972415/dod-Release, September 26, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1972415/dod-
statement-on-deployment-of-us-forces-and-equipment-to-the-kingdom-of-saudi/. statement-on-deployment-of-us-forces-and-equipment-to-the-kingdom-of-saudi/.
~~106~~108 U.S. Army Europe, “Next Atlantic Resolve armored rotation to arrive at the port of Vlissingen,” October 4, 2019, at U.S. Army Europe, “Next Atlantic Resolve armored rotation to arrive at the port of Vlissingen,” October 4, 2019, at
~~https://www.europeafrica.army.mil/ArticleViewPressRelease/Article/1982103/next-atlantic-resolve-armored-rotation-~~
~~to-arrive-at-the-port-of-vlissingen/.~~
~~107 DOD, “DOD Statement on Deployment of Additional U.S. Forces and Equipment to the Kingdom of Saudi Arabia,~~
~~News Release, October 11, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1987575/dod-~~
~~statement-on-deployment-of-additional-us-forces-and-equipment-to-the-kingdo/.~~
~~Congressional Research Service~~
45

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

(continued...) Congressional Research Service 45 Instances of Use of United States Armed Forces Abroad, 1798-2023 Saudi Arabia. On October 11, 2019, Secretary Esper, at the request of U.S. Central Command (CENTCOM), authorized an additional 3,000 troops that have been extended or authorized within the last month; and since May, “DOD has increased the number of forces by approximately 14,000 to the U.S. CENTCOM area of responsibility as an investment into regional security.”109 Afghanistan and South Korea. On December 5, 2019, the Army announced upcoming deployments to Afghanistan and South Korea for U.S. soldiers from 10th Mountain Division and 1st Infantry Division. The 2nd Brigade Combat Team, 1st Infantry Division, out of Fort Riley, Kansas, would deploy for a winter 2020 rotation to South Korea; and the Army’s 1st Brigade Combat Team, 10th Mountain Division, 2020 rotation to South Korea; and the Army’s 1st Brigade Combat Team, 10th Mountain Division,
stationed at Fort Drum, New York, stationed at Fort Drum, New York, ~~wil~~ would be rotating this winter to Afghanistan as part of the Army’s be rotating this winter to Afghanistan as part of the Army’s
commitment to Operation Freedom Sentinel (OFS) in the country.commitment to Operation Freedom Sentinel (OFS) in the country.~~108~~110
Middle East. On Dec. 31, 2019, approximately 100 . On Dec. 31, 2019, approximately 100 ~~Marines~~marines have been deployed to the U.S. embassy in have been deployed to the U.S. embassy in
Baghdad to reinforce security fol owing its attack, according to news reports. “The extra Baghdad to reinforce security fol owing its attack, according to news reports. “The extra ~~Marines~~marines are are
coming from a Special Purpose Marine Air-Ground Task Force based in the region,” officials told coming from a Special Purpose Marine Air-Ground Task Force based in the region,” officials told Task
& Purpose..~~109~~111 According to a statement by Defense Secretary Mark Esper, “We are sending additional According to a statement by Defense Secretary Mark Esper, “We are sending additional
forces to support our personnel at the Embassy.”forces to support our personnel at the Embassy.”~~110~~112 Later the same day, Esper announced the Later the same day, Esper announced the
immediate deployment of about 750 infantry battalion from the Immediate Response Force (IRF) of immediate deployment of about 750 infantry battalion from the Immediate Response Force (IRF) of
the 82nd Airborne Division in Fort Bragg, NC to the Middle East in response to the attack on the U.S. the 82nd Airborne Division in Fort Bragg, NC to the Middle East in response to the attack on the U.S.
embassy in Baghdad.embassy in Baghdad.~~111~~113 Esper also noted that additional forces from the IRF Esper also noted that additional forces from the IRF ~~are~~were prepared to deploy prepared to deploy
over the next several days. over the next several days.
2020 2020
Kuwait. In early January 2020, the . In early January 2020, the ~~Department of Defense~~Defense Department deployed an additional 2,800 troops from deployed an additional 2,800 troops from
the IRF of the 82nd Airborne Division in Fort Bragg, North Carolina. The additional soldiers would the IRF of the 82nd Airborne Division in Fort Bragg, North Carolina. The additional soldiers would
first head to Kuwait.first head to Kuwait.~~112~~114 This deployment This deployment ~~sends~~sent the rest of the brigade to the region, putting the the rest of the brigade to the region, putting the
number of U.S. servicemembers deployed there in late December 2019/early January 2020 at about number of U.S. servicemembers deployed there in late December 2019/early January 2020 at about
3,500. 3,500.
Africa. On February 12, 2020, the Secretary of Defense announced that the Army’s 1st Security Force On February 12, 2020, the Secretary of Defense announced that the Army’s 1st Security Force
Assistance Brigade, based at Fort Benning, GA, would Assistance Brigade, based at Fort Benning, GA, would ~~soon~~ deploy to Africa to provide training and deploy to Africa to provide training and
assistance to African forces as a way to better compete with Russia and China. The deployment assistance to African forces as a way to better compete with Russia and China. The deployment is was the the
result of a review of DOD forces, programs, and activities within each Combatant Command to result of a review of DOD forces, programs, and activities within each Combatant Command to
ensure support with the National Defense Strategy’s priorities. As a result, infantry brigade personnel ensure support with the National Defense Strategy’s priorities. As a result, infantry brigade personnel
from the 101st Airborne Division would return to Fort Campbell, KY.from the 101st Airborne Division would return to Fort Campbell, KY.~~113~~
International. On March 25, 2020, Secretary of Defense Mark Esper enacted a 60-day stop movement
~~order for all DOD uniformed and civilian personnel and their sponsored family members overseas.~~
~~The stop movement order, which would impact approximately 90,000 servicemembers, affects all~~
~~overseas exercises, deployments, redeployments, and other global force management activities. This~~
~~measure was taken to prevent the spread of Coronavirus Disease 2019 (COVID-19), protect U.S.~~
~~personnel, and preserve the operational readiness of U.S. forces.114~~

~~108~~115 https://www.europeafrica.army.mil/ArticleViewPressRelease/Article/1982103/next-atlantic-resolve-armored-rotation-to-arrive-at-the-port-of-vlissingen/. 109 DOD, “DOD Statement on Deployment of Additional U.S. Forces and Equipment to the Kingdom of Saudi Arabia, News Release, October 11, 2019, at https://www.defense.gov/Newsroom/Releases/Release/Article/1987575/dod-statement-on-deployment-of-additional-us-forces-and-equipment-to-the-kingdo/. 110 Kyle Rempfer, “Army announces winter deployments to Korea and Afghanistan,” Army Times, December 5, 2019, Kyle Rempfer, “Army announces winter deployments to Korea and Afghanistan,” Army Times, December 5, 2019,
at https://www.armytimes.com/news/your-army/2019/12/05/army-announces-winter-deployments-to-korea-and-at https://www.armytimes.com/news/your-army/2019/12/05/army-announces-winter-deployments-to-korea-and-
afghanistan/; and “Army announces upcoming 2nd BCT, 1st Infantry Division unit rotation,” December 5, 2019, at afghanistan/; and “Army announces upcoming 2nd BCT, 1st Infantry Division unit rotation,” December 5, 2019, at
https://www.army.mil/article/230131/army_announces_upcoming_2nd_bct_1st_infantry_division_unit_rotation. https://www.army.mil/article/230131/army_announces_upcoming_2nd_bct_1st_infantry_division_unit_rotation.
~~109~~111 Jeff Schogol, “About 100 Marines to reinforce security at US embassy in Baghdad after Iranian-backed attack,” Jeff Schogol, “About 100 Marines to reinforce security at US embassy in Baghdad after Iranian-backed attack,”
Task & Purpose, December 31, 2019, at https://taskandpurpose.com/, December 31, 2019, at https://taskandpurpose.com/news/marines-reinforce-baghdad-embassymarines-reinforce-baghdad-embassy.
~~110~~/. 112 DOD, “DOD Statement on Iraq from Secretary Esper,” News Release, December 31, 2019, at DOD, “DOD Statement on Iraq from Secretary Esper,” News Release, December 31, 2019, at
https://www.defense.gov/Newsroom/Releases/Release/Article/2048868/dod-statement-on-iraq-from-secretary-esper/. https://www.defense.gov/Newsroom/Releases/Release/Article/2048868/dod-statement-on-iraq-from-secretary-esper/.
~~111~~113 DOD, “SD Statement on Deployment of 82nd Airborne Division,” News Release, December 31, 2019, at DOD, “SD Statement on Deployment of 82nd Airborne Division,” News Release, December 31, 2019, at
https://www.defense.gov/Newsroom/Releases/Release/Article/2048934/sd-statement-on-deployment-of-82nd-airborne-https://www.defense.gov/Newsroom/Releases/Release/Article/2048934/sd-statement-on-deployment-of-82nd-airborne-
division/; and Shawn Snow, Howard Altman, and Philip Athey, “750 soldiers with 82nd Airborne headed for division/; and Shawn Snow, Howard Altman, and Philip Athey, “750 soldiers with 82nd Airborne headed for
CENTCOM, additional 4,000 troops expected to deploy as Iran tensions mount,” Military Times, December 31, 2019, CENTCOM, additional 4,000 troops expected to deploy as Iran tensions mount,” Military Times, December 31, 2019,
at https://www.militarytimes.com/flashpoints/2020/01/01/750-soldiers-with-82nd-airborne-headed-for-centcom-at https://www.militarytimes.com/flashpoints/2020/01/01/750-soldiers-with-82nd-airborne-headed-for-centcom-
additional-4000-troops-expected-to-deploy-as-iran-tensions-mount/ additional-4000-troops-expected-to-deploy-as-iran-tensions-mount/
~~112~~114 Kyle Rempfer, “No cellphones, laptops were allowed to go with Army 82nd paratroopers deploying to Middle East,” Kyle Rempfer, “No cellphones, laptops were allowed to go with Army 82nd paratroopers deploying to Middle East,”
Army Times, January 6, 2020, at https://www.armytimes.com/news/your-army/2020/01/06/no-cell-phones-laptops-Army Times, January 6, 2020, at https://www.armytimes.com/news/your-army/2020/01/06/no-cell-phones-laptops-
were-allowed-to-go-with-82nd-paratroopers-deploying-to-middle-east/; and Ryan Browne and Veronica Stracqualursi, were-allowed-to-go-with-82nd-paratroopers-deploying-to-middle-east/; and Ryan Browne and Veronica Stracqualursi,
“US deploys thousands of additional troops to Middle East following Soleimani killing,” January 4, 2020, at “US deploys thousands of additional troops to Middle East following Soleimani killing,” January 4, 2020, at
https://www.cnn.com/2020/01/03/politics/us-troops-middle-east-soleimani/index.html. https://www.cnn.com/2020/01/03/politics/us-troops-middle-east-soleimani/index.html.
~~113~~115 DOD, “Statement on the Deployment of Army’s 1st Security Force Assistance Brigade to Africa,” News Release, DOD, “Statement on the Deployment of Army’s 1st Security Force Assistance Brigade to Africa,” News Release,
~~Feb. 12, 2020, at https://www.defense.gov/Newsroom/Releases/Release/Article/2082314/statement-on-the-~~
~~deployment-of-armys-1st-security-force-assistance-brigade-to-a/.~~
~~114 DOD, “Overseas Stop Movement Order in Response to COVID-19,” News Release, March 25, 2020, at~~
~~https://www.defense.gov/News/Releases/Release/Article/2125725/overseas-stop-movement-order-in-response-to-~~
~~covid-19/.~~
~~Congressional Research Service~~
46

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

(continued...) Congressional Research Service 46 Instances of Use of United States Armed Forces Abroad, 1798-2023 International. On March 25, 2020, Secretary of Defense Mark Esper enacted a 60-day stop movement order for all DOD uniformed and civilian personnel and their sponsored family members overseas. The stop movement order, which would impact approximately 90,000 servicemembers, affects all overseas exercises, deployments, redeployments, and other global force management activities. This measure was taken to prevent the spread of Coronavirus Disease 2019 (COVID-19), protect U.S. personnel, and preserve the operational readiness of U.S. forces.116 Afghanistan. On April 23, 2020, the Army announced the 4th Infantry Division Combat Aviation . On April 23, 2020, the Army announced the 4th Infantry Division Combat Aviation
Brigade (CAB) Brigade (CAB) ~~wil~~ would replace the 10th Mountain Division Combat Aviation Brigade as part of a regular replace the 10th Mountain Division Combat Aviation Brigade as part of a regular
rotation of forces to support the United States’ commitment to OFS.rotation of forces to support the United States’ commitment to OFS.~~115~~117 In the upcoming deployment In the upcoming deployment
to CENTCOM, which to CENTCOM, which ~~wil~~ would be known as “Task Force Ivy Eagle,” the 4th CAB be known as “Task Force Ivy Eagle,” the 4th CAB ~~wil~~ would be augmented by be augmented by
members of the National Guard, sourced primarily from Utah's 1st Battalion, 211th Aviation members of the National Guard, sourced primarily from Utah's 1st Battalion, 211th Aviation
Regiment,Regiment,~~116~~118 In addition, the 4th Security Forces Assistance Brigade at Fort Carson, CO, In addition, the 4th Security Forces Assistance Brigade at Fort Carson, CO, ~~wil replace~~
would replace the 3rd Security Forces Assistance Brigade as part of a regular rotation of forces to support OFS.the 3rd Security Forces Assistance Brigade as part of a regular rotation of forces to support OFS.~~117~~119
Europe. On April 23, 2000, the Army announced that the 1st Cavalry Division Headquarters stationed . On April 23, 2000, the Army announced that the 1st Cavalry Division Headquarters stationed
at Fort Hood, Texas, at Fort Hood, Texas, ~~wil~~ would deploy to Europe deploy to Europe ~~this~~in summer summer 2000. The 1st Cavalry Division Headquarters . The 1st Cavalry Division Headquarters
contingent contingent ~~wil~~ would replace the 1st Infantry Division Headquarters as the Atlantic Resolve Division replace the 1st Infantry Division Headquarters as the Atlantic Resolve Division
Headquarters (Forward) in Poznan, Poland, in support of the United States’ commitment to NATO Headquarters (Forward) in Poznan, Poland, in support of the United States’ commitment to NATO
allies and partners.allies and partners.~~118~~120 In addition, the Army announced the upcoming rotation of the 2nd Armored In addition, the Army announced the upcoming rotation of the 2nd Armored
Brigade Combat Team, 3rd Infantry Division stationed at Fort Stewart, Georgia to Europe. The 2nd Brigade Combat Team, 3rd Infantry Division stationed at Fort Stewart, Georgia to Europe. The 2nd
ABCT ABCT ~~wil~~ would replace 2nd Brigade Combat Team, 1st Cavalry Division in support of the United States’ replace 2nd Brigade Combat Team, 1st Cavalry Division in support of the United States’
commitment to NATO allies and partners.commitment to NATO allies and partners.~~119~~121
Iraq. The Army announced on April 23, 2020, the . The Army announced on April 23, 2020, the ~~upcoming~~ summer rotation to Iraq of the 2nd summer rotation to Iraq of the 2nd
Brigade Combat Team, 82nd Airborne Division stationed at Fort Bragg, NC, Brigade Combat Team, 82nd Airborne Division stationed at Fort Bragg, NC, towould replace the 1st Brigade replace the 1st Brigade
Combat Team, 25th Infantry Division, in support of OIR.Combat Team, 25th Infantry Division, in support of OIR.~~120~~122
Italy. DOD, in coordination with the Department of State, announced . DOD, in coordination with the Department of State, announced toit would provide humanitarian provide humanitarian
support to the Italian Republic as part of its global coronavirus pandemic relief efforts including support to the Italian Republic as part of its global coronavirus pandemic relief efforts including
transporting non-transporting non-~~DoD~~DOD medical equipment, providing relief supplies, and providing military personnel medical equipment, providing relief supplies, and providing military personnel
to support civilian humanitarian operations efforts.to support civilian humanitarian operations efforts.~~121~~123 See also CRS In Focus (IF11480), See also CRS In Focus (IF11480), Overview: The
Department of Defense and COVID-19, in the section entitled, “What are some of DOD's relevant , in the section entitled, “What are some of DOD's relevant
Humanitarian Assistance/Disaster Relief (HA/DR) capabilities?” for more information. Humanitarian Assistance/Disaster Relief (HA/DR) capabilities?” for more information.
Germany. On July 1, 2020, about 250 soldiers assigned to the 101st Airborne Division's 101st Combat . On July 1, 2020, about 250 soldiers assigned to the 101st Airborne Division's 101st Combat
Aviation Brigade arrived in Germany for a nine-month rotation as part of the regional forces Aviation Brigade arrived in Germany for a nine-month rotation as part of the regional forces
~~supporting Atlantic Resolve.122 To mitigate the spread of COVID-19, the brigade wil spend two~~
~~weeks at Camp Kasserine in Grafenwoehr, Germany, isolated in small groups, before moving to~~
~~forward locations alongside allies and partners.123~~
Europe. On September 24, 2020, the Army announced the Fall 2020 rotation to Europe of the 1st
~~Armored Brigade Combat Team, 1st Cavalry Division, stationed at Fort Hood, Texas, to replace the~~
~~2nd Armored Brigade Combat Team, 3rd Infantry Division in support of Operation Atlantic~~
~~Resolve.124~~

~~115~~ Feb. 12, 2020, at https://www.defense.gov/Newsroom/Releases/Release/Article/2082314/statement-on-the-deployment-of-armys-1st-security-force-assistance-brigade-to-a/. 116 DOD, “Overseas Stop Movement Order in Response to COVID-19,” News Release, March 25, 2020, at https://www.defense.gov/News/Releases/Release/Article/2125725/overseas-stop-movement-order-in-response-to-covid-19/. 117 Army Public Affairs, “Army announces upcoming 4th Infantry Division Combat Aviation Brigade, unit rotation,” Army Public Affairs, “Army announces upcoming 4th Infantry Division Combat Aviation Brigade, unit rotation,”
Army.mil, April 23, 2020, at https://www.army.mil/article/234811/Army.mil, April 23, 2020, at https://www.army.mil/article/234811/
army_announces_upcoming_4th_infantry_division_combat_aviation_brigade_unit_rotation. army_announces_upcoming_4th_infantry_division_combat_aviation_brigade_unit_rotation.
~~116~~118 Ibid. Ibid.
~~117~~119 Army Public Affairs, “Army announces upcoming 4th Security Forces Assistance Brigade, unit rotation,” Army.mil, Army Public Affairs, “Army announces upcoming 4th Security Forces Assistance Brigade, unit rotation,” Army.mil,
April 23, 2020, at https://www.army.mil/article/234812/April 23, 2020, at https://www.army.mil/article/234812/
army_announces_upcoming_4th_security_forces_assistance_brigade_unit_rotation. army_announces_upcoming_4th_security_forces_assistance_brigade_unit_rotation.
~~118~~120 Army Public Affairs, “Army announces upcoming 1st Cavalry Division Headquarters, unit rotation,” April 23, 2020, Army Public Affairs, “Army announces upcoming 1st Cavalry Division Headquarters, unit rotation,” April 23, 2020,
at https://www.army.mil/article/234805/army_announces_upcoming_1st_cavalry_division_headquarters_unit_rotation. at https://www.army.mil/article/234805/army_announces_upcoming_1st_cavalry_division_headquarters_unit_rotation.
~~119~~121 Army Public Affairs, “Army announces upcoming 2nd ABCT, 3rd Infantry Division, unit rotation,” April 23, 2020, at Army Public Affairs, “Army announces upcoming 2nd ABCT, 3rd Infantry Division, unit rotation,” April 23, 2020, at
https://www.army.mil/article/234806/army_announces_upcoming_2nd_abct_3rd_infantry_division_unit_rotation. https://www.army.mil/article/234806/army_announces_upcoming_2nd_abct_3rd_infantry_division_unit_rotation.
~~120~~122 Army Public Affairs, “Army announces upcoming 2nd BCT, 82nd Airborne Division, unit rotation,” April 23, 2020, Army Public Affairs, “Army announces upcoming 2nd BCT, 82nd Airborne Division, unit rotation,” April 23, 2020,
at https://www.army.mil/article/234810/army_announces_upcoming_2nd_bct_82nd_airborne_division_unit_rotation. at https://www.army.mil/article/234810/army_announces_upcoming_2nd_bct_82nd_airborne_division_unit_rotation.
~~121~~123 DOD News, “DOD Humanitarian Assistance to the Italian Republic in Response to COVID-19,” April 20, 2020, at DOD News, “DOD Humanitarian Assistance to the Italian Republic in Response to COVID-19,” April 20, 2020, at
https://www.defense.gov/Newsroom/Releases/Release/Article/2157126/dod-humanitarian-assistance-to-the-italian-https://www.defense.gov/Newsroom/Releases/Release/Article/2157126/dod-humanitarian-assistance-to-the-italian-
republic-in-response-to-covid-19/. republic-in-response-to-covid-19/.
~~122 Army Sgt. Alleea Oliver, “Brigade Quarantines after Arriving in Germany in Support of Atlantic Resolve,” DOD~~
~~News, July 1, 2020, at https://www.defense.gov/Explore/Features/Story/Article/2242647/brigade-quarantines-after-~~
~~arriving-in-germany-in-support-of-atlantic-resolve/source/GovDelivery/.~~
~~123 Ibid.~~
~~124 Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Cavalry Division, unit rotation,” September 24,~~
~~Congressional Research Service~~
47

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 47 Instances of Use of United States Armed Forces Abroad, 1798-2023 supporting Atlantic Resolve.124 To mitigate the spread of COVID-19, the brigade would spend two weeks at Camp Kasserine in Grafenwoehr, Germany, isolated in small groups, before moving to forward locations alongside allies and partners.125 Europe. On September 24, 2020, the Army announced the Fall 2020 rotation to Europe of the 1st Armored Brigade Combat Team, 1st Cavalry Division, stationed at Fort Hood, Texas, to replace the 2nd Armored Brigade Combat Team, 3rd Infantry Division in support of Operation Atlantic Resolve.126 Central America. On November 12, 2020, it was reported that 250 troops from JTF-Bravo, U.S. Army . On November 12, 2020, it was reported that 250 troops from JTF-Bravo, U.S. Army
South, Special Operations Command South, and other U.S. Southern Command entities distributed South, Special Operations Command South, and other U.S. Southern Command entities distributed
amongst Honduras, Panama and Guatemala in support of humanitarian relief after Hurricane Eta.amongst Honduras, Panama and Guatemala in support of humanitarian relief after Hurricane Eta.~~125~~127
INDOPACOM region. On December 17, 2020, the Army announced the winter rotation of some . On December 17, 2020, the Army announced the winter rotation of some
elements of the 5th Security Force Assistance Brigade, stationed at Joint Base Lewis-McChord, elements of the 5th Security Force Assistance Brigade, stationed at Joint Base Lewis-McChord,
Washington, to the Indo-Pacific Command (INDOPACOM) region.Washington, to the Indo-Pacific Command (INDOPACOM) region.~~126~~128
2021 2021
Afghanistan and Iraq. On January 15, 2021, acting Defense Secretary Chris Mil er announced that troop . On January 15, 2021, acting Defense Secretary Chris Mil er announced that troop

levels in Iraq and Afghanistan have decreased. Per the announcement, “there are now 2,500 U.S. levels in Iraq and Afghanistan have decreased. Per the announcement, “there are now 2,500 U.S.
service members in Iraq and 2,500 in Afghanistan. It is the lowest number of U.S. troops in service members in Iraq and 2,500 in Afghanistan. It is the lowest number of U.S. troops in

Afghanistan since operations started there in 2001.” Afghanistan since operations started there in 2001.” ~~127~~

129 Korea. On March 25, 2021, the Army announced its Spring 2021 rotation to Korea of the 3rd On March 25, 2021, the Army announced its Spring 2021 rotation to Korea of the 3rd

Armored Brigade Combat Team, 1st Armored Division, stationed at Fort Bliss, Texas to replace the Armored Brigade Combat Team, 1st Armored Division, stationed at Fort Bliss, Texas to replace the

1st Brigade Combat Team, 3rd Infantry Division in support of the U.S. commitment to the Republic 1st Brigade Combat Team, 3rd Infantry Division in support of the U.S. commitment to the Republic

of Korea. of Korea. ~~128~~

130 Afghanistan. On April 15, 2021, President On April 15, 2021, President Joe Biden announced that the United States would begin its final Biden announced that the United States would begin its final
withdrawal of U.S. troops out of Afghanistan, beginning on May 1, 2021. On May 25, 2021, U.S. withdrawal of U.S. troops out of Afghanistan, beginning on May 1, 2021. On May 25, 2021, U.S.

Central Command announced that they estimated the withdrawal Central Command announced that they estimated the withdrawal iswas “somewhere between 16% and “somewhere between 16% and

25% complete.” On July 8, 2021, President Biden announced that the military mission in Afghanistan 25% complete.” On July 8, 2021, President Biden announced that the military mission in Afghanistan

would conclude on August 31, 2021, and the “number of U.S. forces in Afghanistan had been reduced would conclude on August 31, 2021, and the “number of U.S. forces in Afghanistan had been reduced
to a bare minimum.”to a bare minimum.”~~129~~

131 Europe. On July 6, 2021, the Army announced the Fall 2021 rotation to Europe of the 1st Armored On July 6, 2021, the Army announced the Fall 2021 rotation to Europe of the 1st Armored

Brigade Combat Team, 1st Infantry Division, stationed at Fort Riley, Kansas to replace the 1st Brigade Combat Team, 1st Infantry Division, stationed at Fort Riley, Kansas to replace the 1st

Armored Brigade Combat Team, 1st Infantry Division in support of Operation Atlantic Resolve. The Armored Brigade Combat Team, 1st Infantry Division in support of Operation Atlantic Resolve. The

Army also announced its 2021 rotation to Iraq of the 1st Stryker Brigade Combat Team, 4th Infantry Army also announced its 2021 rotation to Iraq of the 1st Stryker Brigade Combat Team, 4th Infantry

~~Division, stationed at Fort Carson, Colorado to replace the 256th Infantry Brigade Combat Team,~~
~~Louisiana Army National Guard in support of Operation Inherent Resolve. 130~~

Haiti. On August 15, 2021, U.S. Southern Command (SOUTHCOM) established Joint Task Force-

~~Haiti to conduct U.S. military operations in support of USAID-led foreign disaster assistance to the~~

~~people of Haiti fol owing an earthquake and tropical storm. Among the assistance, SOUTHCOM has~~

124 Army Sgt. Alleea Oliver, “Brigade Quarantines after Arriving in Germany in Support of Atlantic Resolve,” DOD News, July 1, 2020, at https://www.defense.gov/Explore/Features/Story/Article/2242647/brigade-quarantines-after-arriving-in-germany-in-support-of-atlantic-resolve/source/GovDelivery/. 125 Ibid. 126 Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Cavalry Division, unit rotation,” September 24, 2020, https://www.army.mil/article/239224/army_announces_upcoming_1st_abct_1st_cavalry_division_unit_rotation. 2020, https://www.army.mil/article/239224/army_announces_upcoming_1st_abct_1st_cavalry_division_unit_rotation.
~~125~~127 JTF-Bravo Public Affairs, “JTF-Bravo commits to additional assistance,” November 12, 2020, at JTF-Bravo Public Affairs, “JTF-Bravo commits to additional assistance,” November 12, 2020, at
https://www.jtfb.southcom.mil/News/Article-Display/Article/2413413/jtf-bravo-commits-to-additional-assistance/. https://www.jtfb.southcom.mil/News/Article-Display/Article/2413413/jtf-bravo-commits-to-additional-assistance/.
~~126~~128 Army Public Affairs, “Army announces upcoming rotations for 5th SFAB teams,” December 17, 2020, at Army Public Affairs, “Army announces upcoming rotations for 5th SFAB teams,” December 17, 2020, at
https://www.army.mil/article/241655/army_announces_upcoming_rotations_for_5th_sfab_teams; and “About https://www.army.mil/article/241655/army_announces_upcoming_rotations_for_5th_sfab_teams; and “About
USINDOPACOM,” at https://www.pacom.mil/About-USINDOPACOM/. USINDOPACOM,” at https://www.pacom.mil/About-USINDOPACOM/.
~~127~~129 Jim Garamone, “U.S. Completes Troop-Level Drawdown in Afghanistan, Iraq,” DOD News, January 15, 2021, at Jim Garamone, “U.S. Completes Troop-Level Drawdown in Afghanistan, Iraq,” DOD News, January 15, 2021, at
https://www.defense.gov/Explore/News/Article/Article/2473884/us-completes-troop-level-drawdown-in-afghanistan-https://www.defense.gov/Explore/News/Article/Article/2473884/us-completes-troop-level-drawdown-in-afghanistan-
iraq/. iraq/.
~~128~~130 Army Public Affairs, “Army announces upcoming 3rd ABCT, 1st Armored Division, unit rotation,” March 25, Army Public Affairs, “Army announces upcoming 3rd ABCT, 1st Armored Division, unit rotation,” March 25,
2021, at 2021, at
https://www.army.mil/article/244575/army_announces_upcoming_3rd_abct_1st_armored_division_unit_rotation. https://www.army.mil/article/244575/army_announces_upcoming_3rd_abct_1st_armored_division_unit_rotation.
~~129~~131 The White House, Office of the Press Secretary, “Remarks by President Biden on the Way Forward in The White House, Office of the Press Secretary, “Remarks by President Biden on the Way Forward in
Afghanistan,” April 14, 2021, at https://www.whitehouse.gov/briefing-room/speeches-remarks/2021/04/14/remarks-by-Afghanistan,” April 14, 2021, at https://www.whitehouse.gov/briefing-room/speeches-remarks/2021/04/14/remarks-by-
president-biden-on-the-way-forward-in-afghanistan/; DOD News, “Afghanistan Retrograde Nearly One-Quarter president-biden-on-the-way-forward-in-afghanistan/; DOD News, “Afghanistan Retrograde Nearly One-Quarter
Complete,” May 25, 2021, at https://www.defense.gov/Explore/News/Article/Article/2632456/afghanistan-retrograde-Complete,” May 25, 2021, at https://www.defense.gov/Explore/News/Article/Article/2632456/afghanistan-retrograde-
nearly-one-quarter-complete/; and The White House, Office of the Press Secretary, “Remarks by President Biden on nearly-one-quarter-complete/; and The White House, Office of the Press Secretary, “Remarks by President Biden on
the Drawdown of U.S. Forces in Afghanistan,” July 8, 2021, at https://www.whitehouse.gov/briefing-room/speeches-the Drawdown of U.S. Forces in Afghanistan,” July 8, 2021, at https://www.whitehouse.gov/briefing-room/speeches-
remarks/2021/07/08/remarks-by-president-biden-on-the-drawdown-of-u-s-forces-in-afghanistan/. remarks/2021/07/08/remarks-by-president-biden-on-the-drawdown-of-u-s-forces-in-afghanistan/.
~~130 U.S. Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Infantry Division, unit rotation,” July 6,~~
~~2021, at~~
~~https://www.army.mil/article/247850/army_announces_upcoming_1st_abct_1st_infantry_division_unit_rotation; and~~
~~U.S. Army Public Affairs, “Army announces upcoming 1st SBCT, 4th Infantry Division, unit rotation,” July 6, 2021, at~~
~~https://www.army.mil/article/247852/army_announces_upcoming_1st_sbct_4th_infantry_division_unit_rotation.~~
~~Congressional Research Service~~
48

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Congressional Research Service 48 Instances of Use of United States Armed Forces Abroad, 1798-2023 Division, stationed at Fort Carson, Colorado to replace the 256th Infantry Brigade Combat Team, Louisiana Army National Guard in support of Operation Inherent Resolve. 132 Haiti. On August 15, 2021, U.S. Southern Command (SOUTHCOM) established Joint Task Force-Haiti to conduct U.S. military operations in support of USAID-led foreign disaster assistance to the people of Haiti fol owing an earthquake and tropical storm. Among the assistance, SOUTHCOM has provided air transport to move USAID Disaster Assistance Response Team personnel and supplies to provided air transport to move USAID Disaster Assistance Response Team personnel and supplies to

affected areas, sent helicopters, and provided aerial images to support damage assessments. affected areas, sent helicopters, and provided aerial images to support damage assessments. ~~131~~

133 Afghanistan. On August 15, 2021, as the United States was completing its military withdrawal, the . On August 15, 2021, as the United States was completing its military withdrawal, the
Taliban entered the Afghan capital of Kabul, rapidly taking over the country. The United States sent in Taliban entered the Afghan capital of Kabul, rapidly taking over the country. The United States sent in

additional forces to arrive (among the forces, the 82nd Airborne Division and a battalion from a additional forces to arrive (among the forces, the 82nd Airborne Division and a battalion from a

Marine Expeditionary Unit) to assist with securing the airport in Kabul for the safe departure of U.S. Marine Expeditionary Unit) to assist with securing the airport in Kabul for the safe departure of U.S.

citizens and eligible Afghans. See CRS Report R46879, citizens and eligible Afghans. See CRS Report R46879, U.S. Military Withdrawal and Taliban Takeover in

Afghanistan: Frequently Asked Questions, by Clayton Thomas. , by Clayton Thomas.

Afghanistan. On August 30, 2021, Secretary of Defense Lloyd Austin III announced that the United On August 30, 2021, Secretary of Defense Lloyd Austin III announced that the United
States completed its military evacuation of civilians and withdrew al U.S. forces from Afghanistan. States completed its military evacuation of civilians and withdrew al U.S. forces from Afghanistan.

Prior to this, on August 15, 2021, as the United States was completing its military withdrawal, the Prior to this, on August 15, 2021, as the United States was completing its military withdrawal, the

Taliban entered the Afghan capital of Kabul, rapidly taking over the country.Taliban entered the Afghan capital of Kabul, rapidly taking over the country.~~132~~

134 Europe. On October 8, 2021, the Army announced the fall rotational deployment of 4th Security . On October 8, 2021, the Army announced the fall rotational deployment of 4th Security

Force Assistance Brigade (SFAB) elements to Europe. Advisor teams from the 4th SFAB, stationed at Force Assistance Brigade (SFAB) elements to Europe. Advisor teams from the 4th SFAB, stationed at
Fort Carson, Colorado, Fort Carson, Colorado, ~~wil~~ would deploy to multiple locations in the region to support the United States’ deploy to multiple locations in the region to support the United States’

commitment to European Theater Security Cooperation.commitment to European Theater Security Cooperation.~~133~~135 The Army also announced the 1st The Army also announced the 1st

Cavalry Division Combat Aviation Brigade’s fall rotational deployment to Europe. Stationed at Fort Cavalry Division Combat Aviation Brigade’s fall rotational deployment to Europe. Stationed at Fort

Hood, Texas, the 1st Air Cavalry Brigade, Hood, Texas, the 1st Air Cavalry Brigade, ~~wil~~ would replace the 1st Infantry Division Combat Aviation replace the 1st Infantry Division Combat Aviation

Brigade to support the United States’ commitment to Atlantic Resolve.Brigade to support the United States’ commitment to Atlantic Resolve.~~134~~

136 Europe. On December 16, 2021, the Army announced spring . On December 16, 2021, the Army announced spring 2022 rotational deployment of the 3rd rotational deployment of the 3rd
Armored Brigade Combat Team (ABCT), 4th Infantry Division, to Europe. Stationed at Fort Carson, Armored Brigade Combat Team (ABCT), 4th Infantry Division, to Europe. Stationed at Fort Carson,

Colorado, the 3rd ABCT Colorado, the 3rd ABCT ~~wil~~ would replace the 1st Armored Brigade Combat Team, 1st Infantry Division, replace the 1st Armored Brigade Combat Team, 1st Infantry Division,

as part of a regular rotation of forces to support the U.S. commitment to NATO allies and as part of a regular rotation of forces to support the U.S. commitment to NATO allies and

~~partners.135~~

partners.137 South Korea. On December 16, 2021, the Army announced the spring . On December 16, 2021, the Army announced the spring 2022 rotational deployment of the rotational deployment of the
1st Armored Brigade Combat Team (ABCT), 1st Armored Division, to Korea. Stationed at Fort Bliss, 1st Armored Brigade Combat Team (ABCT), 1st Armored Division, to Korea. Stationed at Fort Bliss,

Texas, 1st ABCT Texas, 1st ABCT ~~wil~~ would replace the 3rd Armored Brigade Combat Team, 1st Armored Division, as part replace the 3rd Armored Brigade Combat Team, 1st Armored Division, as part

of a regular rotation of forces to support the United States’ commitment to the Republic of Korea.of a regular rotation of forces to support the United States’ commitment to the Republic of Korea.~~136~~138 132 U.S. Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Infantry Division, unit rotation,” July 6, 2021, at https://www.army.mil/article/247850/army_announces_upcoming_1st_abct_1st_infantry_division_unit_rotation; and U.S. Army Public Affairs, “Army announces upcoming 1st SBCT, 4th Infantry Division, unit rotation,” July 6, 2021, at https://www.army.mil/article/247852/army_announces_upcoming_1st_sbct_4th_infantry_division_unit_rotation. 133

~~2022~~
Tonga. The USS Sampson, a guided missile destroyer, arrived on January 24, 2022, as part of a
~~multinational effort aiding the Pacific Ocean Kingdom of Tonga in the aftermath of the January 15~~
~~eruption of the undersea volcano Hunga-Tonga-Hunga-Ha'apai.137 According to the U.S. Navy, the~~
~~ship launched its helicopter to conduct intelligence, surveil ance and reconnaissance damage~~
assessment of remote islands Niuafo’ou, Fonualei, Ofu and Fonuafo’ou.138 Romania, Poland and

~~131~~ U.S. Southern Command, “U.S. Southern Command Supports U.S. Disaster Assistance to Haiti,” Press Release. U.S. Southern Command, “U.S. Southern Command Supports U.S. Disaster Assistance to Haiti,” Press Release.
August 15, 2021, at https://www.southcom.mil/News/PressReleases/Article/2732060/us-southern-command-supports-August 15, 2021, at https://www.southcom.mil/News/PressReleases/Article/2732060/us-southern-command-supports-
us-disaster-assistance-to-haiti/. us-disaster-assistance-to-haiti/.
~~132~~134 DOD Press Release, “Statement by Secretary of Defense Lloyd Austin III on the End of the American War in DOD Press Release, “Statement by Secretary of Defense Lloyd Austin III on the End of the American War in
Afghanistan,” August 30, 2021, at https://www.defense.gov/Afghanistan,” August 30, 2021, at https://www.defense.gov/~~Newsroom~~News/Releases/Release/Article/2759181/statement-/Releases/Release/Article/2759181/statement-
by-secretary-of-defense-lloyd-austin-iii-on-the-end-of-the-american-w/by-secretary-of-defense-lloyd-austin-iii-on-the-end-of-the-american-w/.
~~133~~ . 135 Army Public Affairs, “Army announces upcoming deployment for 4th SFAB teams,” October 8, 2021, at Army Public Affairs, “Army announces upcoming deployment for 4th SFAB teams,” October 8, 2021, at
https://www.army.mil/article/250750/army_announces_upcoming_deployment_for_4th_sfab_teams. https://www.army.mil/article/250750/army_announces_upcoming_deployment_for_4th_sfab_teams.
~~134~~136 Army Public Affairs, “Army announces upcoming 1st Air Cavalry Brigade, unit deployment,” October 8, 2021, at Army Public Affairs, “Army announces upcoming 1st Air Cavalry Brigade, unit deployment,” October 8, 2021, at
https://www.army.mil/article/250747/army_announces_upcoming_1st_air_cavalry_brigade_unit_deployment. https://www.army.mil/article/250747/army_announces_upcoming_1st_air_cavalry_brigade_unit_deployment.
~~135~~137 Army Public Affairs, “Army announces upcoming 3rd ABCT, 4th Infantry Division, unit rotation,” December 16, Army Public Affairs, “Army announces upcoming 3rd ABCT, 4th Infantry Division, unit rotation,” December 16,
2021, at 2021, at
https://www.army.mil/article/252604/army_announces_upcoming_3rd_abct_4th_infantry_division_unit_rotation. https://www.army.mil/article/252604/army_announces_upcoming_3rd_abct_4th_infantry_division_unit_rotation.
~~136~~138 Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Armored Division, unit rotation,” December 16, Army Public Affairs, “Army announces upcoming 1st ABCT, 1st Armored Division, unit rotation,” December 16,
2021, at 2021, at
https://www.army.mil/article/252603/army_announces_upcoming_1st_abct_1st_armored_division_unit_rotation. https://www.army.mil/article/252603/army_announces_upcoming_1st_abct_1st_armored_division_unit_rotation.
~~137 Jim Garamone, “USS Sampson Delivers Aid, Assistance to Tonga after Volcano, Tsunami,” DOD News, January~~
~~25, 2022, at https://www.defense.gov/News/News-Stories/Article/Article/2910665/uss-sampson-delivers-aid-~~
~~assistance-to-tonga-after-volcano-tsunami/.~~
~~138 Ibid.~~
~~Congressional Research Service~~
49

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~

Germany. On February 2, 2022, DOD announced that approximately 3,000servicemembers wil move
~~to Romania, Poland and Germany in response to Russia's build-up of~~ Congressional Research Service 49 Instances of Use of United States Armed Forces Abroad, 1798-2023 2022 Tonga. The USS Sampson, a guided missile destroyer, arrived on January 24, 2022, as part of a multinational effort aiding the Pacific Ocean Kingdom of Tonga in the aftermath of the January 15 eruption of the undersea volcano Hunga-Tonga-Hunga-Ha'apai.139 According to the U.S. Navy, the ship launched its helicopter to conduct intelligence, surveil ance, and reconnaissance damage assessment of remote islands Niuafo’ou, Fonualei, Ofu and Fonuafo’ou.140 Romania, Poland, and Germany. On February 2, 2022, DOD announced that approximately 3,000 servicemembers would move to Romania, Poland, and Germany in response to Russia's buildup of forces on its western border forces on its western border
with Ukraine and in Belarus.with Ukraine and in Belarus.~~139~~141 DOD’s Posture Updates in Support of Allies in Europe stated that DOD’s Posture Updates in Support of Allies in Europe stated that
“1,000 U.S. Forces repositioned from Germany to Romania; and an additional 2,000 Multi-Mission “1,000 U.S. Forces repositioned from Germany to Romania; and an additional 2,000 Multi-Mission
“‘Assure and DeterAssure and Deter”’ Forces from Fort Bragg, North Carolina, wil deploy to Poland and Germany Forces from Fort Bragg, North Carolina, wil deploy to Poland and Germany
while 8,500 forces remain in the United States on heightened readiness.”while 8,500 forces remain in the United States on heightened readiness.”~~140~~142
Poland, Europe. On February 11, 2022, a senior defense official said that 3,000 soldiers from the 82nd On February 11, 2022, a senior defense official said that 3,000 soldiers from the 82nd
Airborne Division based at Fort Bragg, North Carolina, would deploy to Europe. Per the senior Airborne Division based at Fort Bragg, North Carolina, would deploy to Europe. Per the senior
defense official, defense official, "“this second tranche of airborne soldiers wil join in Poland the first tranche of 1,700 this second tranche of airborne soldiers wil join in Poland the first tranche of 1,700
soldiers and key enablers that Secretary Austin ordered there on February 2.” In addition, Secretary soldiers and key enablers that Secretary Austin ordered there on February 2.” In addition, Secretary
of Defense Lloyd J. Austin III of Defense Lloyd J. Austin III iswas “temporarily repositioning” 160 troops training Ukraine's military out “temporarily repositioning” 160 troops training Ukraine's military out
of the country.of the country.~~141~~143
Poland, Europe. In a DOD news release on February 24, 2022, the Defense Secretary conveyed that in . In a DOD news release on February 24, 2022, the Defense Secretary conveyed that in
the face of Russian aggression, the United States deployed an additional 15,000 forces in recent days the face of Russian aggression, the United States deployed an additional 15,000 forces in recent days
and weeks and now has more than 90,000 U.S. service members in Europe.and weeks and now has more than 90,000 U.S. service members in Europe.~~142~~

~~139~~144 Europe. On March 5, 2022, Defense Secretary Austin ordered the deployment of an additional approximately 500 U.S. military personnel to locations across Europe to provide additional support to existing U.S. forces in Europe. These forces include the fol owing: “KC-135 refueling aircraft, with approximately 150 personnel, to deploy to Spangdahlem, Germany to provide additional aerial refueling support to USEUCOM; an Air Support Operations Center (ASOC) with approximately 40 personnel to deploy to Poland and Romania, to provide additional command and control to support USEUCOM flight operations; an Ordnance Company and a Maintenance Company with approximately 300 personnel to Germany, to provide additional logistics support to the 1st Armored Brigade Combat Team, 3rd Infantry Division already deployed there.” With these additional deployments, the United States would now have approximately 100,000 military personnel either permanently stationed or deployed to Europe and its waters.145 139 Jim Garamone, “USS Sampson Delivers Aid, Assistance to Tonga after Volcano, Tsunami,” DOD News, January 25, 2022, at https://www.defense.gov/News/News-Stories/Article/Article/2910665/uss-sampson-delivers-aid-assistance-to-tonga-after-volcano-tsunami/. 140 Ibid. 141 Jim Garamone, “U.S. to Deploy 3,000 Troops to Romania, Poland, Germany,” DOD News, February 2, 2022, at Jim Garamone, “U.S. to Deploy 3,000 Troops to Romania, Poland, Germany,” DOD News, February 2, 2022, at
https://www.defense.gov/News/News-Stories/Article/Article/2920844/us-to-deploy-3000-troops-to-romania-poland-https://www.defense.gov/News/News-Stories/Article/Article/2920844/us-to-deploy-3000-troops-to-romania-poland-
germany/. See also Related Transcript: Pentagon Press Secretary John F. Kirby Holds a Press Briefing at germany/. See also Related Transcript: Pentagon Press Secretary John F. Kirby Holds a Press Briefing at
https://www.defense.gov/News/Transcripts/Transcript/Article/2921277/pentagon-press-secretary-john-f-kirby-holds-a-https://www.defense.gov/News/Transcripts/Transcript/Article/2921277/pentagon-press-secretary-john-f-kirby-holds-a-
press-briefing/. press-briefing/.
~~140~~142 DOD Fact Sheet, “Posture Updates in Support of Allies in Europe,” February 2, 2022, at DOD Fact Sheet, “Posture Updates in Support of Allies in Europe,” February 2, 2022, at
https://media.defense.gov/2022/Feb/02/2002931655/-1/-1/0/EUROPE-POSTURE-UPDATES-FACT-SHEET.PDF. https://media.defense.gov/2022/Feb/02/2002931655/-1/-1/0/EUROPE-POSTURE-UPDATES-FACT-SHEET.PDF.
~~141~~143 Jim Garamone, “More U.S. Troops to Deploy to Europe, Guardsmen Reassigned Out of Ukraine,” DOD News, Jim Garamone, “More U.S. Troops to Deploy to Europe, Guardsmen Reassigned Out of Ukraine,” DOD News,
February 12, 2022, at https://www.defense.gov/News/News-Stories/Article/Article/2933203/more-us-troops-to-deploy-February 12, 2022, at https://www.defense.gov/News/News-Stories/Article/Article/2933203/more-us-troops-to-deploy-
to-europe-guardsmen-reassigned-out-of-ukraine/. to-europe-guardsmen-reassigned-out-of-ukraine/.
~~142~~144 DOD News Release, “Readout of Secretary of Defense Lloyd J. Austin III DOD News Release, “Readout of Secretary of Defense Lloyd J. Austin III'’s Calls with NATO Ally Counterparts, s Calls with NATO Ally Counterparts,
February 24, 2022, at https://www.defense.gov/News/Releases/Release/Article/2945927/readout-of-secretary-of-February 24, 2022, at https://www.defense.gov/News/Releases/Release/Article/2945927/readout-of-secretary-of-
defense-lloyd-j-austin-iiis-calls-with-nato-ally-counte/; defense-lloyd-j-austin-iiis-calls-with-nato-ally-counte/; ~~and~~ DOD FACT SHEET: Posture Updates in Support of Allies DOD FACT SHEET: Posture Updates in Support of Allies
in Europe, February 25, 2022, at https://media.defense.gov/2022/Feb/25/2002945659/-1/-1/0/FACTSHEET-in Europe, February 25, 2022, at https://media.defense.gov/2022/Feb/25/2002945659/-1/-1/0/FACTSHEET-
POSTURE-UPDATE-IN-SUPPORT-OF-ALLIES-IN-EUROPE.PDF; and DOD Posture Statement, March 8, 2021, at https://media.defense.gov/2022/Mar/08/2002952460/-1/-1/1/2022-0308-MAR-5-SDOB-FACTSHEET-POSTURE-IN-SUPPORT-OF-ALLIES-IN-EUROPE.PDF. 145 DOD Fact Sheet, “Posture Updates in Support of Allies in Europe,” March 8, 2022, at https://media.defense.gov/2022/Mar/08/2002952460/-1/-1/1/2022-0308-MAR-5-SDOB-FACTSHEET-POSTURE-IN-SUPPORT-OF-ALLIES-IN-EUROPE.PDF. Congressional Research Service 50 Instances of Use of United States Armed Forces Abroad, 1798-2023 Europe. In a DOD Fact Sheet on posture updates in support of allies in Europe, on March 23, 2022, Defense Secretary Austin “ordered the deployment of additional aviation capabilities to Europe, totaling approximately 200 personnel.” Deploying forces include six EA-18G “Growler” aircraft (about 200 personnel) from Naval Air Station (NAS) Whidbey Island, Washington, to Spangdahlem Air Base, Germany. With these additional deployments, the United States would have approximately 100,000 military personnel either permanently stationed or deployed to Europe and its waters.146 Somalia. In May, President Biden authorized the military to deploy a “small, persistent” U.S. military presence to Somalia. Defense Secretary Austin, along with advice from senior commanders, had requested the order out of concern for the safety of U.S. troops “who have incurred additional risk by deploying in and out of Somalia on an episodic basis for the past 16 months.” The U.S. mission in Somalia would remain the same—U.S. forces would provide advise-and-assist support but would not be directly involved in conflict.147 Europe. On June 29, 2022, President Biden announced at the NATO Summit in Madrid that the United States would make long-term commitments to increase European security including the fol owing: more naval destroyers stationed at the Spanish Navy base, NAVSTA Rota; increase rotational deployments of armored, aviation, air defense, and special operations forces in the Baltic region; position a rotational Brigade Combat Team in Romania; station two F-35 fighter jet squadrons positioned in the United Kingdom; add a permanent station in Poland for the U.S. 5th Army Corps Headquarters Forward Command Post; forward-station a short-range air defense battery in Italy; and forward-station an air defense artil ery brigade headquarters, a short-range air defense battalion, a combat sustainment support battalion headquarters, and an engineer brigade headquarters in Germany.148 Europe. On August 12, 2022, the U.S. army announced the fall 2022 deployment of the 101st Division Sustainment Brigade (DSB) headquarters, from Fort Campbell, Kentucky, “to support the United States’ unrelenting commitment to our European and NATO allies.” The 101st DSB deployed approximately 260 soldiers in response to the invasion of Ukraine.149 Europe. On September 2, 2022, the U.S. Army announced the upcoming fall rotational deployment of the 2nd Armored Brigade Combat Team, stationed at Fort Riley, Kansas, to replace the 3rd Armored Brigade Combat Team, 4th Infantry Division, as part of a regular rotation of forces to support the United States’ commitment to Atlantic Resolve.150 Korea. On September 2, 2022, the U.S. Army announced the fall rotational deployment of the 2nd Stryker Brigade Combat Team (SBCT), 2nd Infantry Division, to Korea. The 2nd SBCT, stationed at Joint Base Lewis-McChord, Washington, replaced the 1st Armored Brigade Combat Team as part of a regular rotation of forces to support the United States’ commitment to the Republic of Korea.151 Latin America and the Caribbean. On December 21, 2022, the hospital ship USNS Comfort (T-AH 20) returned to its home port in Norfolk, VA, concluding the U.S. Naval Forces Southern Command/U.S. 4th Fleet’s Continuing Promise 2022 mission. Deployed on October 19, 2022, the USNS Comfort conducted mission stops in Colombia, Dominican Republic, Guatemala, Haiti, and Honduras. Continuing Promise 2022 assisted “more than 13,000 patients, participated in more than 25 subject 146 DOD Fact Sheet, “Posture Updates in Support of Allies in Europe,” March 28, 2022, at https://media.defense.gov/2022/Mar/28/2002964649/-1/-1/0/FACT-SHEET-POSTURE-UPDATE-IN-SUPPORT-OF-ALLIES-IN-EUROPE.PDF. POSTURE-UPDATE-IN-SUPPORT-OF-ALLIES-IN-EUROPE.PDF.
~~Congressional Research Service~~
50

~~Instances of Use of United States Armed Forces Abroad, 1798-2021~~147 C. Todd Lopez, “U.S. to Resume Small, Persistent Presence in Somalia,” DOD News, May 16, 2022, at https://www.defense.gov/News/News-Stories/Article/Article/3033345/us-to-resume-small-persistent-presence-in-somalia/. 148 DOD Fact Sheet, “U.S. Defense Contributions to Europe,” June 29, 2022, at https://www.defense.gov/News/Releases/Release/Article/3078056/fact-sheet-us-defense-contributions-to-europe/. 149 U.S. Army Public Affairs, “Army announces upcoming unit deployment to support European allies and partners By U.S. Army,” August 12, 2022, at https://www.army.mil/article/259302/army_announces_upcoming_unit_deployment_to_support_european_allies_and_partners. 150 U.S. Army Public Affairs, “Army announces upcoming 1std Infantry Division, unit rotation,” September 2, 2022, at https://www.army.mil/article/259331/army_announces_upcoming_2nd_abct_1st_infantry_division_unit_rotation. 151 U.S. Army Public Affairs, “Army announces upcoming 2nd SBCT, 2nd Infantry Division, unit rotation,” September 2, 2022, at https://www.army.mil/article/259332/army_announces_upcoming_2nd_sbct_2nd_infantry_division_unit_rotation. Congressional Research Service 51 Instances of Use of United States Armed Forces Abroad, 1798-2023 matter expert exchanges, conducted five humanitarian assistance and disaster relief workshops, shared in 18 Women, Peace and Security initiative events, and partook in 11 community relations engagements.”152 2023 Europe. During January 13-18, 2023, the U.S. Army’s 2nd Armored Brigade Combat Team, 1st Calvary Division stationed at Fort Hood, Texas, arrived for a scheduled rotational deployment in support of DOD’s Operation Atlantic Resolve, and off-loaded more than 2,500 equipment items at port facilities located in Vlissingen, The Netherlands; Aarhus, Denmark, and Riga, Latvia.153 Europe. On March 7, 2023, the U.S. Army began unit deployments in support of European allies and partners that “provide a robust deterrent and defensive posture alongside our allies across the European continent,” with approximately 500 soldiers from the 10th Mountain Division Headquarters, Fort Drum, New York, replacing soldiers from the 101st Airborne Division Headquarters.154 Additionally, about 3,800 soldiers from the 1st Infantry Brigade Combat Team, 101st Airborne Division, Fort Campbell, Kentucky, replacing soldiers from the 2nd Infantry Brigade Combat Team, 101st Airborne Division.155 Korea. On March 8, 2023, the U.S. Army announced “the 2nd Stryker Brigade Combat Team, 4th Infantry Division, to Korea to replace the 2nd Stryker Brigade Combat Team, 2nd Infantry Division, as part of a regular rotation of forces to support the United States’ commitment to the Republic of Korea.”156 Sudan. On April 22, 2023, DOD announced that U.S. forces evacuated approximately 100 American personnel at the U.S. Embassy in Khartoum, Sudan.157 Defense Secretary Austin stated that U.S. Africa Command conducted the operation “in close coordination with the U.S. State Department and U.S. al ies and partners including Djibouti, Ethiopia, and Saudi Arabia, which were critical to the success of this operation.”158 152 U.S. Southern Command, “USNS Comfort Completes 12th Iteration of Continuing Promise 2022,” December 21, 2022, at https://www.southcom.mil/MEDIA/NEWS-ARTICLES/Article/3253282/usns-comfort-completes-12th-iteration-or-continuing- promise-2022/. 153 U.S. Army Europe and Africa, “Community Notification - Upcoming movements of U.S. Army equipment for Atlantic Resolve,” January 4, 2023, at https://www.europeafrica.army.mil/ArticleViewPressRelease/Article/3258260/community-notification-upcoming-movements-of-us-army-equipment-for-atlantic-res/. See also Meghann Myers, “New in 2023: US troops in Europe to continue deployments, training,” Military Times, December 30, 2022, at https://www.militarytimes.com/news/your-military/2022/12/30/new-in-2023-us-troops-in-europe-to-continue-deployments-training/. According to this article, an estimated 20,000 U.S. troops have mobilized in Europe in support of NATO since Russia’s invasion of Ukraine. Plans are in place in 2023 for continued training with European partners and with Ukrainian troops outside of their country. 154 U.S. Army Public Affairs, “Army begins deployment of units to Europe,” March 7, 2023, at https://www.army.mil/article/264585/army_begins_deployment_of_units_to_europe. 155 Ibid. 156 U.S. Army Staff Reports, “Army announces overseas deployments for these units,” Army Times, March 9, 2023, at https://www.armytimes.com/news/your-army/2023/03/09/army-announces-overseas-deployments-for-these-units/. 157 Jim Garamone, “U.S. Forces Evacuate Americans from Khartoum Embassy,” DOD News, April 23, 2023, at https://www.defense.gov/News/News-Stories/Article/Article/3371442/us-forces-evacuate-americans-from-khartoum-embassy/. 158 DOD News Release, “Statement by Secretary of Defense Lloyd J. Austin III on Sudan,” April 22, 2023, at https://www.defense.gov/News/Releases/Release/Article/3371437/statement-by-secretary-of-defense-lloyd-j-austin-iii-on-sudan/. Congressional Research Service 52 Instances of Use of United States Armed Forces Abroad, 1798-2023

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Author Information

Barbara Salazar Torreon Barbara Salazar Torreon
Sofia Plagakis Sofia Plagakis
Senior Research Librarian Senior Research Librarian
Research Librarian Research Librarian

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