Order Code RL31701
CRS Report for Congress
Received through the CRS Web
Iraq: U.S. Military Operations and Costs
Updated November 20, 2004
Steve Bowman
Specialist in National Defense
Foreign Affairs, Defense, and Trade Division
Congressional Research Service ˜ The Library of Congress

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Iraq: U.S. Military Operations and Costs
Summary
Iraq’s chemical, biological, and nuclear weapons programs, together with Iraqi
long-range missile development and support for al-Queda terrorism, were the primary
justifications put forward for military action. On March 17, 2003, President Bush
issued an ultimatum demanding that Saddam Hussein and his sons depart from Iraq
within 48 hours. On March 19, offensive operations began with air strikes against
Iraqi leadership positions. By April 15, after 27 days of operations, coalition forces
were in relative control of all major Iraqi cities and Iraqi political and military
leadership had disintegrated. On May 1, 2003, President Bush declared an end to
major combat operations. There was no use of chemical or biological (CB)weapons,
and no CB or nuclear weapons stockpiles or production facilities have been found.
The major challenges to coalition forces are now quelling a persistent Iraqi
resistance movement, restoring civil order, and providing basic services to the urban
population. U.S. troops continue to come under increasingly frequent attacks.
Though initially denying that these attacks were the work of an organized resistance
movement, DOD officials have now acknowledged there is regional/local
organization, with apparently ample supplies of arms and funding. CENTCOM
commander Gen. Abizaid, has characterized the Iraqi resistance as “a classical
guerrilla-type campaign.” DOD believes the resistance to comprise primarily former
regime supporters and foreign fighters; however, others are concerned that growing
resentment of coalition forces and resurgent Iraq nationalism, independent of
connections with the earlier regime, are contributing to the resistance. According
to DOD, as of November 19, 2004, 1,217 U.S. troops have died in Iraq operations,
with 946 owing to “hostile fire.” Of these “hostile fire” deaths, 837 have occurred
since May 1, 2003. 8,956 U.S. personnel have been wounded or injured since
military operations began.
U.S. forces in Iraq were to be reduced to about 110,000, with about 20,000
additional support personnel in the region; however, the insurgency has led DOD to
increase the in-country troop level to currently about 141,000. Troop strength is
expected to increase to about 160,000 for the January 2005 Iraqi elections. About
25,000 non-U.S. troops are also in theater, with Britain, Poland, the Netherlands,
Italy, and the Ukraine being the largest contributors. Other nations contributing
troops include Australia, Albania, Azerbaijan, Bulgaria, the Czech Republic,
Denmark, Estonia, Georgia (Gruzia), Hungary, Japan, Kazakhstan, Latvia, Lithuania,
Macedonia, Moldova, Mongolia, New Zealand, Nicaragua, Norway, Philippines,
Portugal, Romania, Slovakia, South Korea, and Thailand.
Congress has approved three supplemental appropriations for Iraq and
Afghanistan operations: $62.37 billion for FY2003; $87.4 billion for FY2004; and
$25 billion for FY2005. An additional FY2005 supplemental request is expected in
early 2005, with press reports indicating it could be as much as $70 billion.
This report will be updated as events warrant.

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Contents
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Military Planning & Combat Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Options Considered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Combat Operations Prior to May 1, 2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Post-May 2003 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Iraqi Security Organizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Iraqi Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Equipment Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Force Level Debate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Non-U.S. Forces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Additional Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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Iraq: U.S. Military Operations and Costs
Background
Iraq’s chemical, biological, and nuclear weapons programs, together with Iraqi
long-range missile development, and Iraqi support for the al-Queda terrorist group
were the primary justifications put forward by the Bush Administration for military
action. Since Iraq originally ended cooperation with U.N. inspectors in 1998, there
was little information on the state of Iraq’s weapons of mass destruction (WMD)
arsenal; however, Administration officials were convinced that Iraq had reconstituted
significant capabilities. Initially, leading Administration officials, most notably Vice-
President Cheney, Defense Secretary Rumsfeld, and his Deputy Paul Wolfowitz,
stressed “regime change” or the removal of Saddam Hussein from power. Later in
2002, WMD disarmament was emphasized as the primary objective. Expanding on
this theme President Bush, in his speech before the United Nations on September 12,
2002, specified the following conditions for Iraq to meet to forestall military action
against it:
! Immediately and unconditionally forswear, disclose, and remove or
destroy all weapons of mass destruction, long-range missiles, and all
related material.
! End all support for terrorism and act to suppress it.
! Cease persecution of its civilian population.
! Release or account for all Gulf War missing personnel.
! End all illicit trade outside the oil-for-food program and allow
United Nations administration of its funds.1
On March 17, 2003, President Bush issued an ultimatum demanding that
Saddam Hussein and his sons depart from Iraq within 48 hours. On March 19,
offensive operations commenced with air strikes against Iraqi leadership positions.
Military Planning & Combat Operations
The Department of Defense released only limited official information
concerning war planning or preparations against Iraq prior to the onset of offensive
operations. There were, however, frequent and significant news leaks which
provided a range of details. News reports indicated that the military options that
were under discussion varied significantly in their assumptions regarding Iraq
military capabilities, the usefulness of Iraqi opposition groups, the attitude of regional
governments, and the U.S. military resources that would be required.
1 President Bush’s Address to the U.N. General Assembly, Sept. 12, 2002.

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CRS-2
Options Considered
In the wake of the successful operations in Afghanistan against the Taliban,
some Administration officials advocated a similar operation, entailing use of special
operations forces in cooperation with indigenous Iraqi opposition forces, coupled
with an extensive air offensive to destroy Hussein’s most reliable Republican Guard
units, command & control centers, and WMD capabilities. This approach assumed
that the regular Iraqi army would prove unreliable, and could even join opposition
forces once it is clear that defeat was imminent. To encourage this, significant
emphasis would be placed on an intensive psychological warfare or “psyops”
campaign to undermine the morale of Iraqi soldiers and unit commanders, persuading
them of the hopelessness of resistance.2
While having the advantage of not requiring large staging areas (though some
regional air basing would be required) or months to prepare, this was generally
considered the riskiest approach. The weakness of Iraqi opposition military forces
and their competing political agendas placed their effectiveness in question, and
predicting the behavior of regular Iraqi Army units under attack was problematic.
This option also did not address the possibility of stiff resistance by Republican
Guard units in the environs of Baghdad, nor the troop requirements of a post-conflict
occupation.
This “lite” option stood in contrast to the operations plan originally offered by
U.S. Central Command. This option, often called the “Franks Plan,” after Army Gen.
Tommy Franks, the U.S. Central Command (CENTCOM) commander who first
briefed it to the President, called for a large-scale ground force invasion. News
reports initially indicated, however, that this “heavy” approach did not receive the
support of the DOD civilian leadership or White House advisors. Questions over the
reliability of the regional support that would be necessary for staging areas and the
length of time required for deployment were the major concerns.3 However, the
White House rejection of the “Franks Plan” came prior to the decision to take the Iraq
issue to the United Nations Security Council. When it became clear that Security
Council deliberations and the re-introduction of U.N. inspectors to Iraq could delay
the possibility of military action for several months, it was apparently decided that
this interlude would allow time both to negotiate regional cooperation and to deploy
more substantial forces to the Persian Gulf region, and military operations appeared
to adhere closer to CENTCOM’s original recommendations. As the ground force
offensive slowed, however, there was increasing criticism of DOD’s civilian
leadership for not permitting the deployment of even more ground forces prior to
onset of operations.4
2 “Timing, Tactics on Iraq War Disputed; Top Bush Officials Criticize Generals’
Conventional Views,” Washington Post, Aug. 1, 2002, p. 1
3 “The Iraq Build-up, II,” National Journal, Oct. 5, 2002, p. 2866.
4 “Rumsfeld’s Role as War Strategist Under Scrutiny,” Reuters, Mar. 30, 2003.

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CRS-3
Combat Operations Prior to May 1, 2003
Offensive operations combined an air offensive and simultaneous ground
offensive, in contrast to the 1991 campaign which saw weeks of air attacks to soften
Iraqi resistance. U.S. Central Command’s operational plan employed a smaller
ground force than the 1991 Desert Storm operation, reflecting an assessment that
Iraqi armed forces were neither as numerous nor as capable as they were ten years
ago, and that U.S. forces are significantly more capable. This option depended upon
the continued cooperation of regional nations for substantial staging areas/airbases
and required months to deploy the necessary forces.
Though press reports differed somewhat, reportedly over 340,000 U.S. military
personnel were in the Persian Gulf region (ashore and afloat). The 3rd Mechanized
Infantry Division, the 101st Airborne Division (Air Assault) , the 7th Cavalry
Regiment, and the 1st Marine Expeditionary Force formed the bulk of the U.S. ground
offensive. The 4th Mechanized Infantry Division arrived late in theater. Ships bearing
its equipment remained off Turkey for weeks awaiting the outcome of negotiations
to permit establishing a northern front attacking from Turkey, and then were diverted
to the Persian Gulf when these negotiations fell through. The U.S. Navy deployed
five of its twelve naval aircraft carrier battle groups. The Air Force had
approximately 15 air wings operating in the region. Strategic bombers operated from
the British airbase at Diego Garcia, and airbases in the Middle East, Europe, and the
United States. The United Kingdom deployed over 47,000 personnel, including a
naval task force, an armored task force, a Royal Marine brigade, a parachute brigade,
a Special Air Service regiment, and a Special Boat Squadron. The majority of these
British forces were engaged in southeastern Iraq, securing the Umm Qasr and Basra
region. Australia deployed approximately 2,000 personnel, primarily special
operations personnel, and one F/A-18 attack aircraft squadron. Poland had 200
special operations troops around Basra. (For more detailed information, see CRS
Report RL31763, Iraq: A Summary of U.S. Forces and CRS Report RL31843, Iraq
Foreign Stances Toward U.S. Policy)
The invasion of Iraq was expected to begin with a 72-96 hour air offensive to
paralyze the Iraqi command structure, and demoralize Iraqi resistance across the
military-civilian spectrum. Intelligence reports indicating the possibility of striking
Saddam Hussein and his immediate circle led to an acceleration of the operations
plan, and an almost simultaneously onset of air and ground offensive operations.
CENTCOM air commanders stressed that significant efforts would be made to
minimize civilian casualties and damage to Iraqi physical infrastructure, and they
were mostly successful in this effort.
With twenty-five days of offensive operations, coalition forces had relative
control of all major Iraqi cities, including Baghdad, Basra, Mosul, Kirkuk, and Tikrit.
CENTCOM pursued a strategy of rapid advance, by-passing urban centers when
possible, pausing only when encountering Iraqi resistance. CENTCOM spokesmen
characterized Iraqi resistance as sporadic and uncohesive. Oilfields and port facilities
throughout Iraq were secured, as have all major air bases in Iraq. Though a few oil
wells were set afire, all were quelled, and there has been no widespread
environmental sabotage. Allied forces did not encounter the mass surrenders
characteristic of the 1991 campaign, however DOD reported that over 6,000 Iraqis

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CRS-4
were taken prisoner, and believes that many more have simply deserted their
positions. Iraqi paramilitary forces, particularly the Saddam Fedayeen, engaged in
guerrilla-style attacks from urban centers in the rear areas, but did not inflict
significant damage. Nevertheless, greater attention than anticipated had to be paid
to protecting extended supply lines, and securing these urban centers, particularly
around an-Nasiriyah and Najaf, and in the British sector around Umm Qasr and
Basra.
Though CENTCOM commanders expressed confidence in the adequacy of
their force structure in theater, the Iraqi attacks in rear areas and the length of the
supply lines to forward units led some to suggest that insufficient ground forces were
in place to continue the offensive while securing rear areas and ensuring
uninterrupted logistical support. These critics faulted DOD civilian leadership for
overestimating the effectiveness of a precision air offensive and curtailing the
deployment of more ground troops, suggesting that an ideological commitment to
smaller ground forces and greater reliance on high-tech weaponry had dominated
military planning.5
Without permission to use Turkish territory, CENTCOM was unable to carry
out an early ground offensive in Northern Iraq. However, Special operations forces,
the 173rd Airborne Brigade, and air-lifted U.S. armor, operating with Kurdish
irregulars seized Mosul, Kirkuk, and Tikrit. Cooperation with Kurdish militias in the
north has been excellent. Even a mistaken air strike against a allied Kurdish vehicle
convoy, killing or wounding senior Kurdish leaders, did not adversely affect this
cooperation.
Post-May 2003 Operations
With the onset of widespread looting and the breakdown of public services
(electricity, water) in the cities, coalition forces were confronted with the challenges
of restoring public order and infrastructure even before combat operations ceased.
Though U.S. forces have come under criticism for not having done more to provide
security, the transition from combat to police roles is a difficult one, particularly
when an important objective is winning popular support. Harsh reactions risk
alienation of the population, yet inaction reduces confidence in the ability of coalition
forces to maintain order. Indicative of the seriousness of the civil disorder, U.S.
officials in Iraq authorized U.S. troops to shoot looters if necessary.6 In addition to
looting, coalition forces also have to ensure that factional violence and does not
derail stabilization efforts. There is emerging, nevertheless, a significant body of
criticism that DOD’s leadership’s assumptions about the ease of the post-war
5 “Questions Raised About Invasion Force,” Washington Post, Mar. 25, 2003, p. 17.
6 “U.S. Military Chief Vows More Troops to Quell Iraqi Looting,” New York Times, May
15. p. 21.

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CRS-5
transition led to inadequate planning within the department, and the disregard of
extensive State Department planning efforts prior to the war. 7
U.S. forces, however, are spread relatively thin throughout Iraq, and many argue
that additional troops in theater could improve the pace and breadth of stabilization
operations. DOD initially rejected this argument, stating that rather than adding more
U.S. troops, the increased number of Iraqi security forces could be counted on to
assist more extensively in stability operations. Indeed, CENTCOM’s intent was to
reduce the U.S. contingent to 110,00 by the end of May 2004. However, in April,
2004, localized uprisings in central and southern Iraq led CENTCOM to alter its
plan, and to raise the number of U.S. troops to 141,000 by delaying the scheduled
return of some units and accelerating the deployment of others.
In late April, coalition forces suspended offensive operations against the Iraqi
insurgents in central and southern Iraq, pending negotiations with local leaders to
obtain the insurgents’ surrender and disarmament. In Najaf, the Shiite insurgency led
by radical cleric Moktada al-Sadr was ended through negotiation and the area has
remained relatively quiet. Many of al-Sadr’s supporters, however, are believed to
have moved to the poor Baghdad suburb of Sadr City and to continue sporadic
attacks against coalition forces.
In Fallujah, U.S. Marine offensive operations were halted and an Iraqi security
brigade was intrusted with restoring order. This failed, with a significant number of
the security forces joining the insurgents, and Fallujah became an insurgents’
stronghold. Insurgents also gained control of other cities in the Sunni Triangle,
including Ramada and Samarra. This fall, U.S. counterinsurgency offensives
regained control of these cities, with the largest operation (12,000 U.S. Marine and
Army troops, with 2,500 Iraqi troops) occurring in Fallujah. It is believed that many
of the insurgents, and particularly the leadership, exfiltrated Fallujah prior to the
U.S. offensive and dispersed to other locations in central and northern Iraq.
Regaining control of these insurgent strongholds has not appeared to have an effect
on the number of attacks on coalition and Iraqi security forces, which, in fact,
increased during the Fallujah offensive. CENTCOM officials believe, however, that
the recapture of Fallujah has removed the major command and control center for the
insurgency, and that the seizure of large arms caches and explosive device
manufacturing facilities will degrade insurgent capabilities. During the Fallujah
offensive, a major insurgents’ attack in Mosul required the deployment of additional
U.S. and Iraqi forces to that region, including Kurdish militia units, to restore order.
The question that remains is whether Sunni insurgents can be kept from re-
infiltrating these cities, and whether Iraqi security forces can be relied upon to
maintain order. One Marine Corps intelligence assessment has called for substantial
U.S. forces to remain in the recaptured cities or risk their return to insurgents’
control. This report has been characterized as a “worst case” scenario by Brig. Gen.
John DeFreitas, the Army’s intelligence chief in Iraq, but military planners are aware
7 David Riff, “Blueprint for a Mess,” New York Times Sunday Magazine, Nov. 2, 2003;
Rowan Scarborough, “U.S. Rushed Post-Saddam Planning,” Washington Times, Sept. 3,
2003, p. 1.

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CRS-6
that the level of success in restoring order in Fallujah will be closely watched both
in Iraq and abroad.8
The attitude of the Iraq population remains the key element to stabilizing Iraq,
and depends upon a variety of factors, such as the nature and extent of infrastructure
damage and economic dislocation, the demands of ethnic and religious groups, and
the speed with which a credible government can be established. A short-term post-
war occupation was initially expected by some Administration officials, however it
is now believed that a continued deployment of substantial military ground forces
will be necessary for several years. For comparison, in the relatively benign
environment and considerably smaller areas of Bosnia and Kosovo, after eight years
of peacekeeping operations, NATO still maintains a deployment of about 24,000
troops.
Iraqi Security Organizations
Iraqi security forces total about 111,000 fully or partially trained personnel, with
an estimated 270,000 required. As of November 17, 2004, the State Department’s
Iraq Weekly Status Report provided the following statistics.
Iraqi Security Forces
Trained/On Hand
Required
Police
44,836
135,000
Civil Intervention Force
0
4,920
Emergency Response Unit
98
270
Border Enforcement
14,953
29,360
Highway Patrol
370
1,500
Bureau of Dignitary Protection
359
500
Army 3,887
27,000
National Guard
43,445
61,904
Intervention Force
1,816
6,584
Special Operations Force
590
1,967
Air Force
167
502
Coastal Defense Force
409
582
Total
110,930
270,089
These organizations' performance during the April insurgencies was generally
poor, with some refusing to oppose the insurgents, and a small percentage joining the
insurgency. During November, the performance of Iraqi Special Operations and
Intervention forces in counterinsurgency operations in Fallujah was praised by the
Army Chief of Staff and Marine Commandant in testimony before the House Armed
Services Committee.9 Overall, however, significant doubts remain about the
reliability of the Iraqi forces. There are reports that the security forces have been
8 Eric Schmitt and Robert Worth, “Marine Officers See Risk In Cuts In Falluja Force," New
York Times, November 18, 2004, p. 1
9 House Armed Services Committee hearing, November 17th, 2004.

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CRS-7
significantly infiltrated by insurgent informants.10 In addition, both active duty
personnel and recruits for the Iraqi security forces have come under wide-spread
attack by insurgents, with fatalities estimated to be over 2,200 since May 2003.11 To
better organize the training of Iraqi forces, CENTCOM has established the
Multinational Security Transition Command. Initial efforts have been hampered by
delays in staffing U.S. personnel, lack of equipment and difficulties in retaining Iraqi
personnel.12 However, DOD officials have expressed optimism that at least 145,000
personnel will be trained and equipped by January 2005. Independent estimates of
the time required to develop a full complement of fully capable security forces range
up to five years.13
Iraqi Resistance
Coalition troops and civilian support personnel continue to come under frequent
and deadly attacks, at first primarily in central Iraq, but then in southern and northern
Iraq also. This constant potential for attack affects the pace and mode of
reconstruction and stabilization operations. Troops must assume a potentially hostile
environment, yet try to avoid incidents or actions that erode popular support. In
addition to continuing attacks on coalition personnel, there have been attacks on
infrastructure targets (e.g., oil/gas pipelines, electrical power stations and lines)
hindering efforts to restore basic services to the civilian population. Attacks on oil
pipelines also threaten to further delay the use of Iraqi oil exports to fund
reconstruction programs. Though it is virtually impossible to fully protect these
pipelines from sabotage, it is hoped that ongoing efforts to recruit a civilian Iraqi
militia will provide coalition troops some assistance in this mission.
Though initially denying that these attacks were the work of an organized
resistance movement, DOD officials have now acknowledged there is at least
regional/local organization, with apparently ample supplies of arms and funding.
CENTCOM commander Gen. Abizaid, has characterized the Iraqi resistance as “ a
classical guerrilla-type campaign.14 Though many attacks have been made with
improvised explosives, the resistance also has access to mortars, rocket launchers,
and surface-to-air missiles looted from Iraq army depots. The President’s quarterly
report to Congress on Iraq operations noted that only 40% of Iraq’s pre-war
10 Richard Oppel, “Friend Or Enemy? The Iraqi Uniforms Don't Always Tell”, New York
Times, November 15, 2004. John Lumpkin, “Insurgents Said To Be Infiltrating Security
Forces”, Associated Press, October 22, 2004
11 Iraq Index, Brookings Institution, November 19, 2004 [http://www.brookings.edu/
fp/saban/iraq/index.pdf]
12 Eric Schmitt, “Effort To Train New Iraqi Army Is Facing Delays”, New York Times,
September 20, 2004. p. 1.
13 Barry Renfrew, “Report Says Iraqi Forces May Take 5 Years To Build,” Associated Press,
October 20, 2004
14 DOD News Briefing, July 16, 2003.

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CRS-8
munitions inventory was secured or destroyed by April 2004.15 The resistance has
also moved from solely guerrilla-style attacks to utilizing suicide bombers. DOD
believes the resistance to comprise primarily former regime supporters such Baathist
party members, Republican Guard soldiers, and paramilitary personnel. However,
others are concerned that growing resentment of coalition forces and resurgent Iraq
nationalism, independent of connections with the earlier regime, may be contributing
to the resistance.16 This view was reinforced by an insurgency led by a Shiite cleric,
Moqtada al-Sadr, in several southern Iraqi cities. In the assault on Fullujah, of the
1,100 prisoners taken fewer than 15 were not Iraqis.17 There are also reports of
bounties of from $1,000-$5,000 being offered for killing coalition troops, taking
advantage of the severe economic dislocation which has many Iraqis with no regular
income. Captured documents have given some indication that preparations for a
resistance movement were made prior to the war, including the caching of arms and
money.
Equipment Issues
Two equipment issues have attracted considerable public and congressional
attention: the availability of “up-armored” High-Mobility Multi-Wheeled Vehicles
(HMMWVs or Humvees) and the availability of the most modern body armor for
individual soldiers. With most heavy armored vehicles being withdrawn after major
combat operations ceased, the HMMWVs are the primary vehicles for patrols and
transportation. While they can fitted with a variety of weapon systems for defense,
the standard HMMWVs offer little protection against the roadside bombs and rocket-
propelled grenades favored by the Iraqi resistance. This created an unanticipated
demand for the “up-armored” version. There were relatively few of these in theater,
and indeed relatively few (2%) in the Army HMMWV inventory. In response, the
Army has transferred available “up-armored” vehicles from other theaters, and
ordered ramped-up production from the vehicle’s one manufacturer. Funding for this
effort has come from re-programming and from DOD emergency supplemental
appropriations. Currently, the army has established a requirement for 8,500 “up-
armored” vehicles in Iraq, up from the May 2003 requirement of 235 vehicles.
Although production has now ramped up to 450 vehicles per month, this requirement
may not be fulfilled until summer 2005. In the last year, the Army has reportedly
revised its estimate of the service’s overall “up-armored” HMMWV requirement
from 1,000 to 11,000.18 As an interim measure, add-on armor kits are being added
to conventional HMMWVs and other vehicles in theater. Over 12,800 kits have been
15 A Report Consistent with the Authorization for the Use of Force Against Iraq. 108th
Congress, 2nd Session. Document No. 108-180, April 21, 2004.
16 “Iraqis Skeptical Over U.S. Explanation for Continuing Attacks on Coalition,” London
Financial Times, Aug. 4, 2003, p. 5.
17 John Hendren, “Few Foreigners Among Insurgents,” Los Angeles Times, November 16,
2004. p. 1
18 “Cold-War Thinking Prevented Vital Vehicle from Reaching Iraq,” Wall Street Journal,
Mar. 19, 2004, p. 1; “U.S. Army at Halfway Mark for Up-Armored Humvees,” Aerospace
Daily, Mar. 9, 2004.

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CRS-9
installed to date, and 12,500 more will be installed. By spring 2005, CENTCOM
intends that all U.S. military vehicles in Iraq have some armor protection19
The issue of modern body armor also arose in the period after major combat
operations ceased. Initially, only dismounted, frontline combat troops were issued
the most modern body armor which can be upgraded with Small Arms Protective
Inserts, or so-called SAPI plates, which can stop most small-arms bullets and
shrapnel. Combat support personnel, tank crews, and most National Guard and
Reserve troops were issued older Vietnam-era “flak jackets” with less protective
capability. As it became clear that the security environment in Iraq made almost all
personnel vulnerable to attack, the demand for the SAPI plate armor increased
dramatically. Press reports of soldiers’ families purchasing the armor to ship to Iraq,
and reports that National Guard units were being sent to Iraq with equipment inferior
to that of regular Army units exacerbated both public and congressional concern.
Again, the Army responded with orders for ramped-up production funded through
reprogramming ($310 million) from DOD’s Iraqi Freedom Fund and $40 million in
the FY2005 DOD appropriations request. According to Army Chief of Staff
Schoomaker, all personnel deployed to Iraq are now equipped with up-to-date body
armor.20
Force Level Debate
The question of how many military personnel are required for stabilization
operations has been a subject of controversy since well before the onset of operations.
This controversy reflects the great difficulty in predicting how the political and
military situation in post-war Iraq will evolve, and how long a military presence will
be required before an acceptable and stable Iraqi government can be established. The
continued Iraqi armed resistance has reinvigorated the debate over whether the
United States has committed sufficient troops to the Iraqi operation. (For detailed
coverage of U.S. forces currently deployed, see CRS Report RL31763, Iraq:
Summary of U.S. Forces.
The rapid success of the combat offensive initially quieted critics who argued
that a substantially larger ground force should have been deployed, but the question
is now being raised whether a more robust military presence in Iraq is needed to bring
stability. Secretary Rumsfeld and out-going CENTCOM commander Gen. Franks
both maintained in congressional testimony that the number of troops in Iraq is
adequate for the mission, though the new insurgencies has changed this view. The
increased troop requirements present a challenge to the Army. Of its 33 combat
brigades, 16 are already deployed in Iraq, and three of the remaining brigades have
other assigned missions (e.g., Afghanistan, the Balkans, Korea) or are in strategic
reserve. Thus, even at current levels, troop rotation has proven problematic. This
was demonstrated when two brigades of the 3rd Infantry Division had their return to
the United States twice postponed in 2003. DOD has announced that at least one
brigade will be transferred from South Korea to Iraq in the course of the next
rotation.
19 House Armed Services Committee Hearing, November 17,2004.
20 House Armed Service Committee Hearing, November 17, 2004

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CRS-10
DOD prepared a rotation plan for Army duty tours in Iraq, which called for
units to spend a one-year tour of duty in the region, however new operational
requirements prevented holding to this plan and several units will have spent more
than one year in Iraq by the time they return to home bases. The Army examined the
possibility of instituting seven-month tours similar to the rotations maintained by the
U.S. Marine Corps, but the Army’s larger force presence in Iraq makes it unlikely
that shorter tours can be accomplished.21
The controversy over additional troops in Iraq has rekindled the debate over
whether the U.S. Army personnel end-strength should be increased. Currently, the
congressionally mandated end-strength is 480,000. In reporting the FY2004 Defense
Authorization Act, the House Armed Services Committee noted the “inadequacy of
military manpower, especially active component end-strength, as indicated in the
need to activate 33,000 reservists annually.” The report further noted that the Army
had estimated its manpower shortfall to be between 41,000 to 123,000 personnel.
DOD’s civilian leadership intends to address shortfalls in specific functions by
moving personnel from lower priority assignments, and by increasing the use of
civilians in some functional areas to free up active duty military personnel. The
Congress has approved a temporary increase of 30,000 to the Army’s end-strength
which is being funded through supplemental appropriations. Army Chief of Staff
Gen. Schoomaker has voiced concern that adding to the Army’s permanent end-
strength would create financial burdens on the service that would reduce the funds
available for equipment modernization. (For additional information, see CRS Report
RS21754, Military Forces: What is the Appropriate Size for the United States
Army?)
Non-U.S. Forces
A key element in the Defense Department’s consideration of troop requirements
in Iraq is the willingness of other nations to contribute ground forces. DOD has
reported that about 25,000 non-U.S. troops from 34 nations are in Iraq, but has not
released a nation-by-nation breakdown of these contributions. Press reports indicate
that Britain, Poland, the Netherlands, Italy, and the Ukraine are the largest
contributors. Most nations, however, have deployed relatively small numbers of
troops, and questions remain about their operational capabilities.22 Some nations that
the United States has approached for assistance (e.g., Turkey, Pakistan, India) have
indicated that their participation would be dependent upon, at a minimum, a United
Nations resolution authorizing operations in Iraq. However, since the United Nations
Security Council passed such a resolution, there still appears little enthusiasm for
contributing military forces. For these nations, significant domestic political
resistance to participation in Iraq operations remains a consideration. Reflecting this,
national elections in Spain resulted in a new government that withdrew the Spanish
contingent from Iraq immediately. The contingents from Honduras and the
Dominican Republic, which were dependent upon Spanish forces for command and
logistic support, also withdrew. Press reports indicate that Thailand is also
21 House Armed Services Committee Hearing, November 17, 2004.
22 “G.I.’s Doubt Foreign Troops Readiness,” Chicago Tribune, Sept. 7, 2003, p. 1.

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reconsidering its deployment, and that Hungary and the Netherlands will withdraw
their troops in March 2005.23
Though many NATO nations have unilaterally contributed troops, the Bush
Administration’s efforts to obtain an institutional NATO commitment to providing
troops have proven unsuccessful. During the June NATO summit in Istanbul, a
NATO statement encouraging its members to assist in the training of Iraq security or
army forces was issued and planning for this mission is underway. The number of
personnel to be involved and the timetable for their deployment has not been decided
officially, though it is expected personnel will not exceed 2,000. NATO officials
have noted that its on-going operations in Afghanistan, where it commands the
International Security Assistance Force with a contingent of 6,500 troops, remain its
primary focus.
Unlike stabilization operations in Bosnia and Kosovo, where contributing
nations assume the cost of their troop deployments, in Iraq the United States is
assuming much of the cost for non-U.S. force deployments. In July 2003, Deputy
Secretary of Defense Wolfowitz estimated that maintenance of 15,000 foreign troops
for six months would cost $276 million. The President’s FY2004 supplemental
budget request included $1.4 billion for the support of non-U.S. forces, however this
amount also includes funding for operations outside Iraq, and the Administration has
not released a break-out of funding specifically for non-U.S. forces in Iraq.24
Additional funds dedicated to the transport and maintenance of non-U.S. forces may
also be included in the Operations and Maintenance accounts of the individual armed
services. The following estimates are from the CRS Report RL32105, Post-War
Iraq: A Table and Chronology of Foreign Contributions , and are based upon press
reports and foreign embassy statements. An asterisk (*) indicates countries that are
withdrawing or reportedly considering withdrawing their forces from Iraq
Table 1. Countries Contributing Personnel to Iraq Operations
Country
Number of Personnel
Albania
70
Australia
850
Azerbaijan
150
Bulgaria
500
Czech Republic
400
Denmark
400
El Salvador
360
23 “Another Nation to Pull Iraq Troops,” Los Angeles Times, Apr. 21, 2004, p.1.; “Two More
States to Quit Coalition,” London Financial Times, p.1.
24 “Cost of Non-U.S. Troops in Iraq Has Become Fuzzy,” Wall Street Journal, Sept. 26,
2003; Presidential Communication to Congress, Sept. 17, 2003.

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Country
Number of Personnel
Estonia
47
Fiji
700
Georgia (Gruzia)
70
Hungary*
300
Italy
3,000
Kazakhstan
27
Latvia
150
Lithuania
130
Macedonia
38
Mongolia
180
Netherlands*
1,100
New Zealand
61
Nicaragua
230
Norway
150
Philippines
96
Poland
2,300
Portugal
120
Romania
734
Slovakia
85
South Korea
646
Thailand*
443
Ukraine
1,700
United Kingdom
12,000
Costs
Predicting the cost of military operations is a task that DOD did not undertake
prior to the peace-keeping deployments to the Balkans, and it remains a somewhat
conjectural exercise. Learning from the attempts to estimate costs for military
operations in the Balkans and elsewhere, DOD has now developed a computer model
based upon previous actual costs (Contingency Operations Support Tool). Though
initially Secretary Rumsfeld expressed his opinion that “it is unknowable what a war
or conflict like that would cost,” in early 2003 he estimated a cost of under $50

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billion. Other DOD officials anticipated an $80-85 billion cost, assuming a
six-month follow-on occupation.25
On March 25, 2003, the Administration submitted a $74.7 billion FY2003
supplemental appropriations request, of which $62.6 billion was for Department of
Defense expenses related to the war in Iraq through September 2003. Specifically,
this request included funds for preparatory costs incurred, costs associated with
military operations, replenishing munitions, and funds to support other nations. The
Administration stated that this supplemental request was “built on the key
assumption that U.S. military action in Iraq will be swift and decisive.”26 Both the
House and Senate approved the legislative conference report to H.R. 1559 (H.Rept.
108-76), which provided $62.37 billion.
On September 17, 2003, President Bush submitted an $87 billion emergency
FY2004 supplemental budget request, of which $51.8 billion was for military
operations in Iraq (Operations and Maintenance- $32.3; Personnel $18.5). (For a
detailed discussion, see CRS Report RL32090, FY2004 Supplemental Appropriations
for Iraq, Afghanistan, and the Global War on Terrorism: Military Operations &
Reconstruction Assistance.) On October 30, Congress approved an appropriation of
$87.4 billion, a $400 million increase over the President’s request. Congress has also
approved an FY2005 emergency supplemental appropriation of $25 billion and
indicated that an additional supplemental request will be made early in 2005.
Unofficial estimates of the second FY2005 range up to $70 billion, though some
observers believe this estimate to be too high.27 DOD now estimates that the
combined military operations in both Iraq and Afghanistan are costing between $5-6
billion a month.28 (See also CRS Report RS21644, The Cost of Operations in Iraq,
Afghanistan, and Enhanced Security.)
Prior to the war, a number of cost estimates were put forward. Michael
O’Hanlon of the Brookings Institution pegged a 250,000-strong invasion at between
$40-$50 billion, with a follow-up occupation costing $10-$20 billion a year. Former
White House economic advisor Lawrence Lindsay estimated the high limit on the
cost to be 1-2% of GNP, or about $100-$200 billion. Mitch Daniels, Director of the
Office of Management and Budget, subsequently discounted this estimate as “very,
very high,” and stated that the costs would be between$50-$60 billion, though no
specific supporting figures were provided for the estimate.29
In a March 2003 cost estimate, prior to the onset of the war, the Congressional
Budget Office put deployment costs at about $14 billion, with combat operations
25 “War Could Cost More Than $40 billion,” Knight-Ridder Wire Service, Sept. 18, 2002;
“Iraq War Costs Could Soar, Pentagon Says,” Los Angeles Times, Feb. 26, 2003.
26 U.S. Office of Management and Budget, Press Release No. 2003-6, Mar. 25, 2002.
27 Ibid.
28 Edmund Andrews, “White House Weigh Price Tag on Emergency Request for Iraq,” New
York Times, October 27, 2004.
29 Elisabeth Bumiller, “Budget Director Lowers Estimate of Cost of War,” New York Times,
Dec. 31, 2002, p. 1.

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costing $10 billion for the first month and $8 billion a month thereafter. CBO cited
the cost of returning combat forces to home bases at $9 billion, and the costs of
continued occupation of Iraq to run between $1-4 billion.30 On October 28 2003,
C.O. issued a letter report to Representative Spratt, ranking member of the House
Budget Committee, estimating the cost of four scenarios for the Iraq occupation.
Positing different troop levels, rates of withdrawal, and durations of the occupation,
the cost estimates range from $85 to $200 billion during the 2005-2013 time frame.
These estimates do not include funding for reconstruction or classified activities31
The American Academy of Arts and Sciences published a much more wide-
ranging report which covers the possibility of an extended occupation, in addition to
potential long-term economic consequences and concludes that potential costs could
range from $99 billion to $1.2 trillion.32 For comparison, the cost to the United
States of the Persian Gulf War in 1990-91 was approximately $60 billion, and almost
all of this cost was offset by international financial contributions.33
30 U.S. Congressional Budget Office, An Analysis of the President’s Budgetary Proposals
for Fiscal Year 2004: An Interim Report, Mar. 2003.
31 Inside Defense.Com, Nov. 3, 2003, p. 1.
32
War with Iraq: Costs, Consequences, and Alternatives, American Academy of Arts and
Sciences, Dec. 2002, [http://www.amacad.org/publications/monographs/War_with_Iraq.pdf].
33 Persian Gulf War: U.S. Costs and Allied Financial Contributions, CRS Issue Brief
IB91019, Sept. 1992. (Out of print. For copies, contact Steven Bowman 202-707-7613.)

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Additional Reading
CRS Report RL31763, Iraq: Summary of U.S. Forces.
CRS Report RL31339, Iraq: U.S. Regime Change Efforts and Post-War Governance.
CRS Report RL31871, Post-War Iraq: Potential Issues Raised by Previous
Occupation and Peacekeeping Experiences.
CRS Report RS21404, U.S. Occupation of Iraq? Issues Raised by Experiences in
Japan and Germany.
For a more detailed list of CRS reports concerning Iraq, see
[http://www.congress.gov/erp/legissues/html/isfar12.html].

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