The 2024 Army Force Structure Transformation March 28, 2024
Initiative
Andrew Feickert
Since the U.S. Army’s inception in 1775, it has reorganized or transformed its force
Specialist in Military
structure on several occasions. These changes have occurred for a variety of reasons,
Ground Forces
such as shifting security requirements; to fight the nation’s wars and conflicts; the
introduction of new weapons, such as tanks and nuclear weapons; and budgetary
considerations.
The Army has transformed its force structure on four major occasions since 2000:
• 2003: The Modular Army;
• 2012: Army Drawdown and Restructuring;
• 2017: Army Force Structure Decisions; and
• 2018: Army’s AimPoint and Army 2030 Force Structure Initiatives.
On February 27, 2024, the Army publicly announced “changes to its force structure that will modernize and
continue to transform the service to better face future threats. Under the plan, the Army will reorganize over the
next decade to ensure it can deliver trained, cohesive and lethal forces to meet future challenges in increasingly
complex operational environments.” In conjunction with this announcement, the Army published Army White
Paper: Army Force Structure Transformation.
As part of this transformation, the Army plans to develop new
• Multi-Domain Task Forces (MDTFs),
• Indirect Fire Protection Capability (IFPC) battalions,
• Counter-Small Unmanned Aerial Systems (C-sUAS) batteries, and
• Maneuver Short-Range Air Defense (M-SHORAD) battalions.
To transform its force structure, the Army plans to initiate a number of force structure reductions and, at the same
time, undertake a number of actions to address recruiting challenges that directly affect the Army’s ability to
populate both existing and planned force structures.
Potential considerations for Congress include the national security implications of the Army’s planned
transformation; the transformation of the Reserve Component; the total cost and duration of the transformation;
and additional considerations, such as populating, equipping, and basing the new force structure.
Congressional Research Service
link to page 4 link to page 4 link to page 5 link to page 6 link to page 6 link to page 7 link to page 8 link to page 8 link to page 8 link to page 9 link to page 9 link to page 10 link to page 10 link to page 10 link to page 10 link to page 11 link to page 12 link to page 13 link to page 13 link to page 13 link to page 13 link to page 14 link to page 14 link to page 14 link to page 15 link to page 15 link to page 17 The 2024 Army Force Structure Transformation Initiative
Contents
Importance to Congress ................................................................................................................... 1
Previous Army Reorganizations ...................................................................................................... 1
2003: The Modular Army .......................................................................................................... 2
2012 Army Drawdown and Restructuring ................................................................................ 3
2017 Army Force Structure Decisions ...................................................................................... 3
2018 Army’s AimPoint and Army 2030 Force Structure Initiatives ......................................... 4
February 2024 Army Force Structure Transformation Announcement ........................................... 5
Background ............................................................................................................................... 5
Accomplishing the Transformation ........................................................................................... 5
New Capabilities ....................................................................................................................... 6
Multi-Domain Task Forces (MDTFs) ................................................................................. 6
Indirect Fire Protection Capability (IFPC) Battalions ........................................................ 7
Counter-Small Unmanned Aerial Systems (C-sUAS) Batteries ......................................... 7
Maneuver Short-Range Air Defense (M-SHORAD) Battalions ......................................... 7
Force Structure Reductions ....................................................................................................... 7
Addressing Recruiting Challenges ............................................................................................ 8
Summary ................................................................................................................................... 9
Potential Considerations for Congress .......................................................................................... 10
National Security Implications ................................................................................................ 10
Transformation of the Reserve Component? ........................................................................... 10
Total Cost of Transformation .................................................................................................. 10
Transformation Timeline .......................................................................................................... 11
Other Transformation Considerations ...................................................................................... 11
Populating Force Structure ................................................................................................ 11
Equipping New Force Structure ........................................................................................ 12
New Force Structure Basing ............................................................................................. 12
Contacts
Author Information ........................................................................................................................ 14
Congressional Research Service
The 2024 Army Force Structure Transformation Initiative
Importance to Congress
The Army’s 2024 proposal to significantly transform its force structure seeks to “build on the
modernization and organizational shifts of recent years [and] … enable the Army to bring in new
capabilities to meet requirements under the National Defense Strategy.”1
The proposal has national security implications that Congress may consider as part of its
oversight and authorizations and appropriations role. For example, in terms of force size,
Congress sets the endstrength2 for both the Active and Reserve components of the Army.
Congress also authorizes and appropriates funds needed for Army restructuring, training
exercises, equipment, basing, and infrastructure.
In addition, the Army’s decision to transform its force structure may have an impact on Army
bases located in Members’ districts or states, and it may have economic ramifications for
communities around or near affected bases. The restructuring proposal may also have an impact
on local and state defense-related industries. Furthermore, soldiers and their families who might
be affected by the Army’s transformation decisions constitute a distinct element of Members’
constituencies.
Previous Army Reorganizations
Since the U.S. Army’s inception in 1775, it has reorganized or transformed its forces many times.
These changes have occurred for various reasons, such as shifting security requirements; to fight
the nation’s wars and conflicts; the introduction of new weapons, such as tanks and nuclear
weapons; and budgetary considerations. According to one study, from 1939 to the mid-1980s, the
Army conducted at least 11 reviews of its structure and organization, which oftentimes led to
force structure changes.3 After World War II and the Korean War, the Army transformed and
reorganized to meet the growing Soviet and Warsaw Pact threat. The Army transformed again
after the Cold War ended in 1991. In a more contemporary context, the Army has transformed its
force structure on four major occasions since 2000, as briefly described in the following sections.
The text box below describes the current levels of organization and command of U.S. Army
units.
1 Army White Paper: Army Force Structure Transformation, February 27, 2024.
2 Each year, Congress authorizes in the National Defense Authorization Act (NDAA) the number of military members
in every Service and component; this number is known as endstrength. As noted in CRS Insight IN11994, FY2023
NDAA: Active Component End-Strength, authorized strength means “the largest number of members authorized to be in
an armed force, a component, a branch, a grade, or any other category of the armed forces” (10 U.S.C. §101(b)(11)).
Authorized endstrengths are maximum strength levels as of September 30, the end of the fiscal year.
3 U.S. Army Command and General Staff College Combat Studies Institute, “Sixty Years of Reorganizing for Combat:
A Historical Trend Analysis,” 1999, p. 1.
Congressional Research Service
1
The 2024 Army Force Structure Transformation Initiative
Levels of Organization and Command of U.S. Army Units
(Smallest to Largest)
Squad/Section: A squad is commanded by a sergeant and has four to 12 personnel. A section is a group of
vehicles, generally two in number.
Platoon: A platoon is commanded by a second lieutenant and includes varying numbers of subordinate squads or
sections. It has 16 to 50 personnel.
Company/Troop/Battery: A company is commanded by a captain and includes two to five subordinate
platoons (usually three or four). It has about 60 to 200 personnel. Cavalry companies are called troops; artil ery
companies are called batteries.
Battalion/Squadron: A battalion is commanded by a lieutenant colonel and usually includes three to five combat
companies and one support company. It has about 400 to 1,000 personnel. Cavalry battalions are called
squadrons.
Brigade Combat Team/Support Brigade/Regiment/Group: A brigade is commanded by a colonel and is
generally configured as either a brigade combat team (BCT) or a support brigade. A BCT has about 4,000 to
4,700 personnel, depending on whether it is an armored, Stryker, or infantry BCT. Cavalry brigades are called
regiments; some types of support brigades are called groups.
Division: A division is commanded by a major general and includes two to five BCTs (usually four), an aviation
brigade, an artil ery brigade, an engineer brigade, and a logistics brigade. Divisions have about 12,000 to
16,000 personnel.
Corps: A corps is commanded by a lieutenant general and includes two to five divisions and numerous support
brigades and commands.
Army: An army is the highest command level in a given theater of operations and typically has 100,000 to
300,000 personnel. It is an element of a joint command structure—the Army’s component is commanded by a
general.
Theater: An operational theater is established to support one or more corps (usually two) and includes
numerous support brigades and support commands.
Source: This information is taken directly from the Congressional Budget Office, The U.S. Military’s Force Structure:
A Primer, 2021 Update, May 2021, p. 19.
2003: The Modular Army4
In 2003, with the Active and Reserve Components of the Army involved in long-term combat
operations in Iraq and Afghanistan, the Army initiated a total force modular reorganization to
“better meet the challenges of the 21st century security environment and, specifically, jointly fight
and win the Global War on Terrorism (GWOT).”5 The Association of the U.S. Army (AUSA)
described the Army modular force initiative as a “major transformational effort involving the total
redesign of the operational Army (all components) into a larger, more powerful, more flexible and
more rapidly deployable force while moving the Army from a division-centric structure to one
built around a brigade combat team (BCT).”6 By adopting modularity, the Army hoped, among
other things, to (1) increase the rotational pool of ready units by at least 50%, (2) design units that
would require less augmentation when deployed (reducing the requirement for ad hoc
organizations), and (3) reduce stress on the force through a more predictable deployment cycle.
Modular redesign required significant organizational changes in terms of personnel, equipment,
and basing of units. Army modularity was costly. In 2006, the Government Accountability Office
(GAO) noted that “the Army’s cost estimate for completing modular force restructuring by 2011
4 For additional information on Army Modularity, see CRS Report RL32476, U.S. Army’s Modular Redesign: Issues
for Congress, by Andrew Feickert.
5 Army Strategic Planning Guidance 2005, January 15, 2005, p. 9.
6 Association of the U.S. Army, “Torchbearer National Security Report - A Modular Force for the 21st Century,” March
15, 2005, p. 3.
Congressional Research Service
2
The 2024 Army Force Structure Transformation Initiative
has grown from an initial rough order of magnitude of $28 billion in 2004 to $52.5 billion
currently.” 7
2012 Army Drawdown and Restructuring8
In January 2012, the Department of Defense (DOD) unveiled new defense strategy guidance
based on a review of potential future security challenges and budgetary constraints.9 The new
strategy guidance envisioned a smaller, leaner Army that would be agile, flexible, rapidly
deployable, and technologically advanced. The new strategy guidance was intended to rebalance
the Army’s global posture and presence, emphasizing where potential problems were likely to
arise, such as the Asia-Pacific region and the Middle East.
As part of this strategy, active component Army endstrength was to shrink from 570,000 in 2010
to 490,000 by the end of 2017. As part of this reduction, the Army would no longer be sized to
conduct large-scale, protracted stability operations but would continue to be a full-spectrum force
capable of addressing a wide range of national security challenges. In June 2013, the Army
announced it would cut 12 BCTs from the Army’s 35 Active Component (AC) BCTs, as well as a
number of unspecified support and headquarters units. In addition, Army National Guard
(ARNG) BCTs were to be restructured in a similar fashion. As part of the drawdown of 12 active
duty BCTs, two armored BCTs were removed from Europe.
2017 Army Force Structure Decisions10
The National Defense Authorization Act for Fiscal Year 2017 (P.L. 114-328) authorized the Army
to maintain an endstrength of 1.018 million Active and Reserve Component soldiers, an increase
over previous programmed plans to reduce the total Army to 980,000. The endstrength increase
was intended to “begin to address and reduce the capabilities gap against near-peer, high-end
adversaries; reduce modernization gaps; and improve readiness in existing units.”11 With this
increase in total Army endstrength, the Army initiated a series of force structure changes,
including the following:
• Adding additional soldiers to units that were deploying on operations so that
those units had 100% of their authorized personnel available.
• Assigning additional soldiers to the Training and Doctrine Command (TRADOC)
to address manpower shortfalls in initial basic soldier training units and
recruiting commands.
• Retaining a number of units previously slated for deactivation, including the 4th
Infantry Brigade Combat Team (IBCT) (Airborne) of the 25th Infantry Division
based at Joint Base Elmendorf-Richardson, Alaska, and a Combat Aviation
Brigade in South Korea.
7 United States Government Accountability Office (GAO) Testimony Before the Subcommittee on Tactical Air and
Land Forces, Committee on Armed Services, House of Representatives, “Force Structure Capabilities and Cost of
Army Modular Force Remain Uncertain,” GAO-06-548T, April 4, 2006.
8 Information in this section is taken from CRS Report R42493, Army Drawdown and Restructuring: Background and
Issues for Congress, by Andrew Feickert.
9 Department of Defense, Sustaining U.S. Global Leadership: Priorities for 21st Century Defense, January 2012.
10 Information in this section is taken from CRS In Focus IF10678, Army FY2017 Force Structure Decisions, by
Andrew Feickert.
11 U.S. Army War College Archives News Article, “U.S. Army Announces Force Structure Decisions for Fiscal Year
2017,” June 15, 2017.
Congressional Research Service
3
The 2024 Army Force Structure Transformation Initiative
• Creating new units and converting existing units into new units, including
• converting the 2nd IBCT, 3rd Infantry Division at Ft. Stewart, Georgia, into an
Armored Brigade Combat Team (ABCT);
• creating two Security Force Assistance Brigades (SFABs),12 one in the Active
Component and one in the ARNG;
• creating an aviation training brigade at Ft. Cavazos (formerly known as Ft.
Hood), Texas;
• creating three Multiple Launch Rocket System (MLRS) battalions to be
stationed overseas; and
• creating a Short-Range Air Defense (SHORAD) battalion.13
2018 Army’s AimPoint and Army 2030 Force Structure Initiatives14
In 2018, the Army unveiled the concept of Multi-Domain Operations (MDO) in response to the
2018 National Defense Strategy, which shifted from the previous focus of U.S. national security
of countering violent extremists worldwide to confronting revisionist powers—primarily Russia
and China.15 The primary means by which the Army intended to build its MDO capability was
through what it called the AimPoint Force Structure Initiative. AimPoint was to be a flexible force
structure, with little change expected at brigade level and below, but with major changes at higher
echelons—division, corps, and theater command. Under AimPoint, headquarters at higher levels
would be developed and existing ones would be modified to build back a campaign capability
(i.e., adding additional staff, specialists, capabilities, and units) to compete with near-peer
adversaries and to employ information warfare and operate in the cyber and space domains.
As part of AimPoint, in February 2020 the Army announced the activation of a new corps
headquarters, designated Fifth Corps (V Corps), located at Fort Knox, KY, with a rotational
forward presence in Poland. The Army began the creation of five Multi-Domain Task Forces
(MDTFs),16 with the mission to penetrate enemy environments by employing assets to counter
enemy anti-access/area denial (A2/AD)17 capabilities and enemy network-focused targeting of
12 For additional information on Security Force Assistance Brigades, see CRS In Focus IF10675, Army Security Force
Assistance Brigades (SFABs), by Andrew Feickert.
13 For additional information on Army Short-Range Air Defense (SHORAD), see CRS Report R46463, U.S. Army
Short-Range Air Defense Force Structure and Selected Programs: Background and Issues for Congress, by Andrew
Feickert.
14 Information in this section is taken from CRS In Focus IF11542, The Army’s AimPoint and Army 2030 Force
Structure Initiatives, by Andrew Feickert.
15 For additional information on Multi-Domain Operations (MDO), see CRS In Focus IF11409, Defense Primer: Army
Multi-Domain Operations (MDO), by Andrew Feickert.
16 For additional information on Multi-Domain Task Forces, see CRS In Focus IF11797, The Army’s Multi-Domain
Task Force (MDTF), by Andrew Feickert.
17 Anti-access/area denial (A2/AD) has been described as any action, activity, or capability, usually long-range,
designed to prevent an advancing military force from entering an operational area. Area denial is defined as action,
activity, or capability, usually short-range, designed to limit an adversarial force’s freedom of action within an
operational area. In terms of weapon systems, threat A2/AD defenses are envisioned as comprising layered and
integrated long-range precision-strike systems, littoral anti-ship capabilities, air defenses, and long-range artillery and
rocket systems.
Congressional Research Service
4
The 2024 Army Force Structure Transformation Initiative
U.S. units. Also under AimPoint, the Army began developing long-range precision fires systems
and units.18
In January 2022, the Army redesignated AimPoint to “Army 2030.” Under Army 2030, the Army
envisioned redesignating existing divisions or creating new divisions into five types of divisions:
• Standard Light,
• Standard Heavy,
• Penetration,
• Joint Force Entry Air Assault, and
• Joint Force Entry Airborne.
February 2024 Army Force Structure
Transformation Announcement
On February 27, 2024, the Army announced “changes to its force structure that will modernize
and continue to transform the service to better face future threats. Under the plan, the Army will
reorganize over the next decade to ensure it can deliver trained, cohesive and lethal forces to meet
future challenges in increasingly complex operational environments.”19 In conjunction with this
announcement, the Army published Army White Paper: Army Force Structure Transformation.20
This white paper is summarized and discussed in the following sections.
Background21
The Army contends that for “nearly twenty years the Army’s force structure reflected a focus on
counterinsurgency and counterterrorism operations that dominated after the 9/11 attacks.” While
the Army will likely continue to need these capabilities “in light of the changing security
environment and evolving character of war, the Army is refocusing on conducting large-scale
combat operations against technologically advanced military powers.” To accomplish this, the
Army plans to “generate new capabilities and re-balance its force structure.”
Accomplishing the Transformation22
Prior to announcing its proposal to transform the Army force structure, the Army conducted a
year-long Total Army Analysis (TAA)23—a “a rigorous assessment of its force structure.” The
18 For examples of these systems, see CRS In Focus IF12135, The U.S. Army’s Strategic Mid-Range Fires (SMRF)
System (Formerly Mid-Range Capabilities System), by Andrew Feickert, and CRS In Focus IF11991, The U.S. Army’s
Long-Range Hypersonic Weapon (LRHW): Dark Eagle, by Andrew Feickert.
19 U.S. Army Public Affairs, “Army Changes Force Structure for Future Warfighting Operations,” February 27, 2024,
https://www.army.mil/article/274003/army_changes_force_structure_for_future_warfighting_operations.
20 Army White Paper: Army Force Structure Transformation, February 27, 2024, https://api.army.mil/e2/c/downloads/
2024/02/27/091989c9/army-white-paper-army-force-structure-transformation.pdf.
21 Quoted information in this section is taken from Army White Paper: Army Force Structure Transformation, February
27, 2024.
22 Ibid.
23 The Total Army Analysis (TAA) is an analytical process used to determine the numbers and types of units the Army
will need in the future for all Army Components (Active and Reserve). It establishes the basis for Army activities such
as resource allocation, personnel management, equipment procurement, and operational planning. The TAA is also the
basis for the Army‘s program objective memorandum (POM) and budget submission that are provided to Congress.
Congressional Research Service
5
The 2024 Army Force Structure Transformation Initiative
Army White Paper: Army Force Structure Transformation states that the Army consulted
extensively with Congress and, on this basis, “Army leaders are moving forward with a
significant force structure transformation,” which implies some unspecified form of congressional
approval of the Army’s transformation plans.
At present, Army AC force structure is designed to accommodate 494,000 soldiers but AC
endstrength is set by FY2024 law (P.L. 118-31) at 445,000 soldiers. Based on the TAA, the Army
plans to bring the authorized troop level of 494,000 down to 470,000 by FY2029. The Army
intends to cut 24,000 authorizations, or spaces, in order to add 7,500 new spaces to support a
series of new capabilities. By reducing authorizations, the Army intends “to shrink excess, largely
unmanned hollow force structure and build new formations equipped with new capabilities
needed for large scale combat operations.” The Army contends it is “currently significantly over-
structured, meaning there are not enough soldiers to fill out existing units and organizations.”
With the addition of 7,500 authorizations needed to bring new capabilities into the force, the
Army needed to identify some 32,000 authorizations across the rest of the force that could be
phased out.
The Army white paper emphasizes that reductions are to authorizations or “spaces,” not “faces”
(i.e., individual soldiers). The Army does not plan to force soldiers out of the Army, and the white
paper notes “that with planned end strength increases over the next few years, many installations
could potentially see an increase in the number of soldiers stationed there.”
New Capabilities24
The Army white paper cites four types of units designed to provide new capability. The Army
may plan to establish other types of units as part of the transformation initiative, but the white
paper does not discuss them. Some of these units could support new weapon systems being
developed by the Army, such as the M-10 Booker,25 which is described as a light tank intended to
support Infantry Brigade Combat Teams (IBCTs), or the Army’s Long-Range Hypersonic Weapon
(LRHW).26 The four new types of units, which the Army calls “a representative sample of the
Army’s full capability growth,” are described below.
Multi-Domain Task Forces (MDTFs)27
The Army is in the process of establishing five MDTFs. MDTFs are designed to protect Joint and
Coalition forces, conduct intelligence gathering and synchronization, deliver non-kinetic space
and cyber effects to shape operations, and deliver long-range fires in support of joint force
maneuver. They are theater-level assets that include a headquarters and headquarters battalion, a
multi-domain effects battalion, a long-range fires battalion, an indirect fire protection capability
(IFPC) battalion, and a brigade support battalion. The Army intends to “complete the build out”
24Army White Paper: Army Force Structure Transformation, February 27, 2024.
25 For additional information on the M-10 Booker, see CRS In Focus IF11859, The Army’s M-10 Booker (Formerly
Known as Mobile Protected Firepower [MPF]) System, by Andrew Feickert.
26 For additional information on the Long-Range Hypersonic Weapon (LRHW), see CRS In Focus IF11991, The U.S.
Army’s Long-Range Hypersonic Weapon (LRHW): Dark Eagle, by Andrew Feickert.
27 For additional information on Multi-Domain Task Forces (MDTFs), see CRS In Focus IF11797, The Army’s Multi-
Domain Task Force (MDTF), by Andrew Feickert.
Congressional Research Service
6
The 2024 Army Force Structure Transformation Initiative
of these five MDTFs, likely meaning bringing these organizations up to their fully authorized
strengths.28
Indirect Fire Protection Capability (IFPC) Battalions29
The Army plans to establish four additional IFPC battalions. IFPC units “provide a short to
medium-range capability to defend against unmanned aerial systems, cruise missiles, rockets,
artillery and mortars.”30
Counter-Small Unmanned Aerial Systems (C-sUAS) Batteries31
The Army plans to establish nine new C-sUAS batteries. These units are to be incorporated into
IFPC and division air defense battalions and will likely employ a variety of systems,
technologies, and techniques to counter the growing small UAS threat.
Maneuver Short-Range Air Defense (M-SHORAD) Battalions32
The Army plans to establish four additional M-SHORAD battalions. These units “counter low
altitude aerial threats, including UAS, rotary wing aircraft, and fixed wing aircraft.”33
Force Structure Reductions34
To identify force structure reductions, the Army employed a multifaceted approach to realign and
resize the force. The Army “looked carefully at each military occupational specialty, and
examined each skill set and functional area for efficiencies.” In one example, the Army
reallocated BCT-level counterinsurgency-focused engineer force structure to the division level,
thereby “allowing the Army to reduce the overall number of engineer positions while giving
division and corps commanders flexibility to concentrate assets as necessary during large scale
combat operations.” The Army notes that by identifying efficiencies in other types of units, it was
able to reduce its authorizations by almost 10,000 spaces.
The Army further noted it reduced 2,700 authorizations
[b]ased on modeling that included factors such as demand over time, capacity to meet
National Defense Strategy requirements and past deployment stress. Units that deploy
infrequently or not at all pointed to areas where the Army could reduce manning
authorizations within a formation at minimal risk. The Army will also decrease the number
28 Quoted information in this section is taken from Army White Paper: Army Force Structure Transformation, February
27, 2024.
29 For additional information on indirect fire protection capability (IFPC), see CRS In Focus IF12421, The U.S. Army’s
Indirect Fire Protection Capability (IFPC) System, by Andrew Feickert.
30 Quoted information in this section is taken from Army White Paper: Army Force Structure Transformation, February
27, 2024.
31 Ibid.
32 For additional information on M-SHORAD, see CRS In Focus IF12397, U.S. Army’s Maneuver Short-Range Air
Defense (M-SHORAD) System, by Andrew Feickert.
33 Quoted information in this section is taken from Army White Paper: Army Force Structure Transformation, February
27, 2024.
34 Ibid.
Congressional Research Service
7
The 2024 Army Force Structure Transformation Initiative
of transients, trainees, holdees and students (TTHS)35 by approximately 6,300
authorizations as it resizes for a 470,000 soldier Regular Army.36
The majority of additional reductions “resulted from adjustments to the close combat forces” and
targeted legacy formations that had “previously been sized and structured for soldier-intensive
COIN operations.” These reductions included
• inactivation of cavalry squadrons in continental U.S.-based Stryker brigade
combat teams and infantry brigade combat teams;
• conversion of infantry brigade combat team weapons companies to platoons, and,
• elimination of some positions across Regular [Active Componenet] Army
Security Force Assistance Brigades (SFABs).37
These force structure reductions accounted for roughly 10,000 additional reductions in
authorizations.
The Army also intends to reduce Army Special Operations Forces (ARSOF)38 The white paper
states,
Working closely with the Assistant Secretary of Defense for Special Operations and Low-
Intensity Conflict and U.S. Special Operations Command, the Secretary of Defense
determined the Army could reduce Army special operations forces by approximately 3,000
authorizations…. Positions and headquarters elements that are historically vacant or hard
to fill will be prioritized for reduction.39
Addressing Recruiting Challenges
It has been widely acknowledged 40 that “the U.S. military faces its most severe recruiting crisis
since the inception of the all-volunteer force (AVF) in 1973, posing a risk to the Army and to U.S.
national security.”41 One report notes,
In FY2022, the Army fell 15,000 short of its goal of 60,000 recruits in the active component
(25 percent). The service missed its ambitious recruiting goal of 65,000 Soldiers in FY2023
by 10,000. In FY 2022, the Army cut its active-duty endstrength to 466,000 and the FY
35 According to the Association of the U.S. Army (AUSA), “The Army uses the term Trainees, Transients, Holdees and
Students (TTHS) to represent soldiers not assigned to units. The active Army’s total strength is divided between the
Force Structure Allowance (FSA)—the total of all authorized positions in units—and TTHS. While TTHS is a target
and not a limit, Army policy decisions influence its size and composition.” See https://www.ausa.org/sites/default/files/
LPE-04-7-TTHS-is-Not-a-Four-Letter-Word.pdf.
36 Quoted information in this section is taken from Army White Paper: Army Force Structure Transformation, February
27, 2024.
37 For additional information on Security Force Assistance Brigades (SFABs), see CRS In Focus IF10675, Army
Security Force Assistance Brigades (SFABs), by Andrew Feickert.
38 For additional information on Army Special Operations Forces (ARSOF), see CRS Report RS21048, U.S. Special
Operations Forces (SOF): Background and Considerations for Congress, by Andrew Feickert.
39 Army White Paper: Army Force Structure Transformation, February 27, 2024.
40 See David Vergun, “DOD Addresses Recruiting Shortfall Challenges,” DOD News, December 13, 2023; Ellen
Mitchell, “Army Revamps Recruiting in Face of Enlistment Shortfalls,” The Hill, October 3, 2023; Joe Lacdan, “Army
Leaders Implement Measures to Bolster Recruiting,” Army News Service, September 12, 2002; and LTC Frank
Dolberry and Charles McEnany, “Be All You Can Be: The U.S. Army's Recruiting Transformation,” Association of the
U.S. Army (AUSA), January 22, 2024.
41 LTC Frank Dolberry and Charles McEnany, “Be All You Can Be: The U.S. Army's Recruiting Transformation,”
Association of the U.S. Army (AUSA), January 22, 2024.
Congressional Research Service
8
The 2024 Army Force Structure Transformation Initiative
2023 budget funded an active duty Army endstrength of 452,000—the smallest since
before World War II.42
Final FY2024 Army recruiting numbers are not yet known, but an October 2023 DOD press
release stated that the Army had achieved only 69.54% of that month’s recruiting goal.43 Given
past recruiting shortfalls and preliminary FY2024 recruiting data, it is difficult to predict if the
Army will be able rectify its recruiting challenges in the near and long term.
Acknowledging and addressing the Army’s recruiting challenges, the Army white paper states,
Concurrent with its force structure transformation, the Army is undertaking a similarly
important transformation of its recruiting enterprise so that it can man units sufficiently,
continue to bring the right types and amounts of new talent into the Army and rebuild its
overall end strength. The Army must solve its recruiting challenges to successfully
transform for the future.44
The Army’s recruiting transformation involves
• continuing the Soldier Referral Program and the Future Soldier Prep Course,
which has brought more than 14,000 new soldiers into the Army since its
inception in 2022;
• professionalizing its recruiting workforce, starting with the creation of its first
class of recruiting warrant officers and creating a new recruiting military
occupational specialty and selecting, training, and assigning recruiters far
differently than in the past;
• creating a significant experimentation capability within U.S. Recruiting
Command and its five recruiting brigades to quickly identify and scale up
promising new approaches and discard recruiting practices no longer successful
in a competitive and rapidly changing labor market;
• elevating the U.S. Army Recruiting Command to a three-star command that will
oversee recruiting brigades, the Army Cadet Command, and the Army’s
Enterprise Marketing Office; and
• having the U.S. Army Recruiting Command report directly to the Secretary of the
Army and the Chief of Staff of the Army in light of the command’s critically
important mission.45
Summary
The Army White Paper: Army Force Structure Transformation constitutes formal public
disclosure of its future plans for force structure changes and the recruiting initiatives needed to
support those proposed changes. It remains to be seen if the Army will release additional details
on transformation, or if future global strategic developments will influence the configuration,
scope, and execution of the Army’s transformation plans.
42 Ibid.
43 Department of Defense Press Release, “Department of Defense Announces Recruiting and Retention Numbers,
Fiscal Year 2024 – Thru October 2023,” October 31, 2023.
44 Army White Paper: Army Force Structure Transformation, February 27, 2024.
45 Information in this section is taken directly from Army White Paper: Army Force Structure Transformation,
February 27, 2024.
Congressional Research Service
9
The 2024 Army Force Structure Transformation Initiative
Potential Considerations for Congress
The Army’s plans to transform force structure over the next few years raises several potential
congressional considerations.
National Security Implications
The Army’s white paper cites the evolving character of war as one of the reasons why the Army
needs to transform. General Mark Milley, the former Chairman of the Joint Chiefs of Staff, has
written that the “nature of war—a violent contest of wills to achieve political aims—is
immutable,” but “the character of war—how, where, with what weapons, and technologies wars
are fought—is changing rapidly.”46 As written, the Army white paper appears to address
technology-based, non-kinetic space and cyber effects, long-range precision fires, and force
protection more than it does conventional close-combat force capabilities, Army Special
Operations Forces capabilities, and Security Force Assistance capabilities. From this, it could be
inferred that the Army’s proposed force structure transformation emphasizes the “character of
war” more than the “nature of war.” The reduction in the aforementioned capabilities may have
national security implications, such as the inability to conduct certain operations because of
reduced unit capability or added stress on the force resulting from fewer available SFAB soldiers,
special operations soldiers, and soldiers from other units not mentioned in the Army’s white
paper—all of which could merit further examination by Congress.
Transformation of the Reserve Component?
In 2018, the Army Strategy stated that
[t]he Army Strategy articulates how the Total Army achieves its objectives defined by the
Army Vision and fulfills its Title 10 duties. Its primary inputs are the National Security
Strategy, National Defense Strategy, and National Military Strategy.47
Despite stating that the proposed force structure transformation is necessary to “bring in new
capabilities to meet requirements under the National Defense Strategy,” the Army white paper
focuses almost exclusively on the Active Component. The white paper cites the Total Army
Analysis, which traditionally determines the numbers and types of Active and Reserve units, as
underpinning the Army’s planned transformation. The Army does not explain why the
transformation plan omits the Reserve Component. Without an explanation, a reader could infer
that Reserve Component force structure is adequate or that the Reserve Component does not play
a prominent role in supporting the National Defense Strategy. To address this ambiguity,
Congress might seek greater clarification from Army leadership on the expectations for the
Reserve Component in its plans to transform force structure.
Total Cost of Transformation
As previously noted, force structure transformation can be an expensive undertaking.
Furthermore, force structure changes are rarely long term, as emerging strategic challenges, new
46 General Mark A. Milley, “Strategic Inflection Point: The Most Historically Significant and Fundamental Change in
the Character of War Is Happening Now—While the Future Is Clouded in Mist and Uncertainty,” Joint Force
Quarterly, 3rd Quarter, July 2023.
47 The Army Strategy, https://www.army.mil/e2/downloads/rv7/the_army_strategy_2018.pdf, accessed March 8, 2024.
Congressional Research Service
10
The 2024 Army Force Structure Transformation Initiative
technologies, and availability of resources can necessitate additional force structure changes. For
example, as part of Army 2030, the Army announced in 2022 that it was
[s]hifting its organizational focus to larger formations that are more capable of working
with our sister services, allies and partners around the globe. Theater armies, corps and
divisions will gain the personnel, organizations and equipment they need to disrupt and
defeat an adversary’s ability to achieve their objectives.48
The 2022 shift in organizational focus essentially reverted the Army back to the force structure
that existed prior to the Army’s costly 2003 Modular Force Structure Initiative.
Because major force structure changes involve a variety of costs, some of which can be
substantial and affect other planned Army initiatives, a total estimated cost for the Army’s 2024
Force Structure Transformation is arguably essential for effective congressional oversight.
Without such an estimate, the Army’s transformation plans are essentially an open-ended
commitment, and Congress does not have a reliable cost benchmark with which to make
informed decisions on Army funding.
Transformation Timeline
The Army White Paper: Army Force Structure Transformation establishes a plan for personnel-
related initiatives by FY2029, but it does not address in any level of detail a timeline for
transforming the force structure. Based on reports and statements from the Army, some of these
force structure changes have already occurred.49 But for other units, a timeline for
transformation—whether for reducing current force structure or establishing new units—is not
widely known.50 As with the case of an estimated total cost, a detailed understanding of the
Army’s planned transformation timeline could prove beneficial to effective congressional
oversight of the Army’s Transformation Initiative.
Other Transformation Considerations
Though not addressed in great detail in the Army white paper, there are other matters related to
the transformation that Congress might consider in the context of congressional oversight.
Populating Force Structure
It is one thing to establish the authorizations for new and existing units discussed in the Army’s
white paper, yet another to fill those authorizations with qualified soldiers. Army units are
composed of officers, noncommissioned officers (NCOs), and enlisted soldiers. When soldiers
enlist in the Army, they choose their military occupational specialty (MOS) subject to their
performance on standardized aptitude tests and the aptitude requirements of their desired branch.
In many cases, a soldier might want to enlist for a certain technical specialty but not have the
aptitude scores required for that MOS. Generally speaking, many of the units described in the
transformation white paper, such as MDTFs and air and missile defense units, have high aptitude
requirements because of their highly technical nature. Such aptitude requirements could further
limit the Army’s ability to fully populate those units. Plans calling for “completing the build out”
48 Army of 2030, https://api.army.mil/e2/c/downloads/2022/10/06/4632c205/army-2030-information-paper.pdf,
accessed March 8, 2024.
49 The Army Strategy, https://www.army.mil/e2/downloads/rv7/the_army_strategy_2018.pdf, accessed March 8, 2024.
50 See for example Jordan Allen, “M-SHORAD System Bolsters Army’s Air Defense Capabilities,” Army News
Service, April 23, 2021, and Jen Judson, “U.S. Army’s Air Defense Modernization Boss on Missiles, Machine
Learning,” Defense News, March 8, 2024.
Congressional Research Service
11
The 2024 Army Force Structure Transformation Initiative
of already existing MDTFs could be due in part to not having enough soldiers in highly technical
MOSs needed to serve in MDTFs. To better understand this potential limitation, Congress could
explore with the Army how aptitude requirements could affect the ability to populate current and
new force structure.
A related issue is the Army’s “recruiting crisis.” Although the Army white paper lays out steps to
rectify the problem, it does not address what could happen to the Army’s transformation
aspirations if recruiting does not improve or worsens. As the Army has stated, additional
endstrength will be required to meet its transformation objectives. In this regard, Congress could
discuss with the Army its contingency plans in the event that recruiting does not improve or gets
worse.
Equipping New Force Structure
The Army White Paper: Army Force Structure Transformation discusses a variety of new units
being fielded; undoubtedly, additional units will also be created as part of this initiative. Some
units, such as LRHW batteries and Directed Energy (DE) SHORAD units, do not have mature
weapons and technologies. Furthermore, all units require different types of equipment, including
radars and vehicles for transportation and support. Given the many challenges of equipping new
units, Congress could explore with the Army its plans for equipping units over time. Such an
examination might include when the Army’s new units are planned to achieve Initial Operational
Capability (IOC) and when they are expected to reach Full Operational Capability (FOC).
Another issue for discussion could be whether the Army is experiencing any specific equipment-
related developmental and production problems that could affect IOC and FOC, and whether
Congress might be able to assist in addressing these issues.
New Force Structure Basing
The Army’s white paper references elements of MDTFs being stationed overseas and forward
deployed and notes that “most installations will likely see an increase in the number of soldiers
actually stationed there.” Beyond those two references, little is said regarding the basing of new
force structure.51
Basing of Army units, whether overseas or in the United States, has potential oversight
implications for Congress. New units might require additional Military Construction (MILCON)
funds to possibly include additional base housing or medical facilities. Furthermore, although
additional units, soldiers, and families on a base also can have a positive economic impact on
local communities, they can also put increased burdens on public services and infrastructure (e.g.,
schools, transport systems). Conversely, for bases that lose soldiers and family members as part
of force structure transformation, those losses could have consequences for the base and the local
community that would be of interest to Congress.
In the past, Congress has authorized BRAC, or Base Realignment and Closure, which was “used
to reorganize its base structure to more efficiently and effectively support our forces, increase
operational readiness and facilitate new ways of doing business”52 To enhance oversight of force
51 Army White Paper: Army Force Structure Transformation, February 27, 2024.
52 From the Office of the Under Secretary of Defense for Acquisition & Sustainment Base Realignment and Closure
(BRAC), https://www.acq.osd.mil/brac/#:~:text=
BRAC%2C%20which%20stands%20for%20Base,new%20ways%20of%20doing%20business, accessed March 14,
2024.
Congressional Research Service
12
The 2024 Army Force Structure Transformation Initiative
structure-related basing, Congress might benefit from a detailed basing plan that specifies which
bases are expected to receive new units, as well as which bases are slated to lose force structure.
Congressional Research Service
13
The 2024 Army Force Structure Transformation Initiative
Such a plan could address base-specific timelines, especially if actions need to be taken by
Congress to authorize base realignments resulting from force structure changes, negotiations
required to be undertaken with host nations for new units planned for overseas basing, as well as
any other issues that could have an impact on the Army’s domestic and overseas basing plans.
Author Information
Andrew Feickert
Specialist in Military Ground Forces
Disclaimer
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan
shared staff to congressional committees and Members of Congress. It operates solely at the behest of and
under the direction of Congress. Information in a CRS Report should not be relied upon for purposes other
than public understanding of information that has been provided by CRS to Members of Congress in
connection with CRS’s institutional role. CRS Reports, as a work of the United States Government, are not
subject to copyright protection in the United States. Any CRS Report may be reproduced and distributed in
its entirety without permission from CRS. However, as a CRS Report may include copyrighted images or
material from a third party, you may need to obtain the permission of the copyright holder if you wish to
copy or otherwise use copyrighted material.
Congressional Research Service
R47985 · VERSION 1 · NEW
14