|Formed||September 18, 1947|
|Jurisdiction||United States Army|
|Headquarters||The Pentagon, Arlington County, Virginia, U.S.|
|Annual budget||$180B (FY2020)|
|Parent agency||U.S. Department of Defense|
|Military service branches|
|Unified combatant commands|
The United States Department of the Army (DA) is one of the three military departments within the Department of Defense of the U.S.. The Department of the Army is the federal government agency within which the United States Army (U.S.) is organized, and it is led by the secretary of the Army, who has statutory authority under 10 United States Code § 3013 to conduct its affairs and to prescribe regulations for its government, subject to the limits of the law, and the directions of the secretary of defense and the president.
The secretary of the army is a civilian official appointed by the president and confirmed by the Senate. The highest-ranking military officer in the department is the chief of staff of the Army, who is also a member of the Joint Chiefs of Staff. Other senior officials of the department are the under secretary of the Army (principal deputy to the secretary) and the vice chief of staff of the Army (principal deputy to the chief of staff.)
The Department of War was originally formed in 1789 as an Executive Department of the United States, and was split by the National Security Act of 1947 into the Department of the Army and Department of the Air Force on September 18, 1947. By amendments to the National Security Act of 1947 in 1949, the department of the Army was transformed to its present-day status.
The Department of the Army is a Military Department within the United States Department of Defense. The department is headed by the secretary of the army, who by statute must be a civilian, appointed by the president with the confirmation by the United States Senate. The secretary of the Army is responsible for, and has the authority to conduct all the affairs of the Department of the Army, subject to the authority, direction and control of the secretary of defense. The Department of the Army is divided between its headquarters at the seat of government and the field organizations of the Army.
By direction of the secretary of defense, the secretary of the Army assigns Army forces, apart from those units performing duties enumerated in 10 United States Code § 3013 (i.e. organize, train & equip) or unless otherwise directed, to the operational command of the commanders of the Combatant Commands. Only the secretary of defense (and the president) has the authority to approve transfer of forces to and from Combatant Commands by 10 United States Code § 162.
Headquarters, Department of the Army is the corporate office of the department which exercises directive and supervisory functions and consists of two separate staffs; the Office of the Secretary of the Army (10 United States Code § 3014), the mainly civilian staff; and the Army Staff (10 United States Code § 3031} & 10 United States Code § 3032), the mainly military staff. The Office of the Secretary and the Army Staff are organized along similar lines, with civilians and military officers both overseeing similar program areas.
|Assistant Secretary of the Army (Manpower and Reserve Affairs)||Deputy Chief of Staff (G1-Personnel)|
Deputy Chief of Staff (G3/5/7-Operations)
|Assistant Secretary of the Army for Installations, Energy and Environment||Deputy Chief of Staff for Installations (G9)|
|Assistant Secretary of the Army for Civil Works||Chief of Engineers|
|Assistant Secretary of the Army for Acquisition, Logistics, and Technology||Deputy Chief of Staff (G4-Logistics)|
|Assistant Secretary of the Army (Financial Management and Comptroller)||Deputy Chief of Staff (G8-Financial Management)|
|General Counsel of the Army||Deputy Chief of Staff (G2-Intelligence)|
|Army Chief Information Officer (CIO)||Deputy Chief of Staff (G6-Communications/IT)|
The Office of the Secretary is led by the secretary of the Army, assisted by the under secretary of the Army and the administrative assistant to the secretary of the Army, who is the senior civilian career official of the department. The Office of the Secretary of the Army, also known as the Army Secretariat, is divided into multiple branches with functional responsibilities, the six most important of which are headed by one of the five assistant secretaries of the Army or the general counsel of the Army, each of whom are civilians appointed by the president and confirmed by the Senate.
The Army Staff is led by the chief of staff of the Army, a four-star general who is the highest-ranking officer in the Army and the Army member of the Joint Chiefs of Staff. The chief of staff is assisted in managing the Army Staff by the vice chief of staff of the United States Army, a four-star general and second-highest-ranking officer in the Army. The Army Staff is divided into several directorates, each headed by a three-star general.
A key official within the Army Staff is the director of the Army Staff, who is a three-star general. The director is responsible for integrating and synchronizing the work of the Office of the Secretary and the Army Staff so that they meet the goals and priorities of the secretary of the Army. Other key figures within the Army Staff are the sergeant major of the Army, the United States Army judge advocate general, the chief of the Army Reserve, the United States Army provost marshal general, and the United States Army surgeon general. The chief of the National Guard Bureau was previously considered part of the Army Staff, but has been elevated to four-star rank and membership in the Joint Chiefs of Staff; the director of the Army National Guard and the director of the Air National Guard (both three-star positions) report to the chief, National Guard Bureau for strategy and policy, but receive funding and Service-specific guidance from their respective services.
Headquarters, United States Department of the Army (HQDA):
|Army Commands||Current commander||Location of headquarters|
|United States Army Forces Command (FORSCOM)||GEN Michael X. Garrett||Fort Bragg, North Carolina|
|United States Army Futures Command (AFC)||GEN John M. Murray||Austin, Texas|
|United States Army Materiel Command (AMC)||GEN Edward M. Daly||Redstone Arsenal, Alabama|
|United States Army Training and Doctrine Command (TRADOC)||GEN Paul E. Funk II||Fort Eustis, Virginia|
|Army Service Component Commands||Current commander||Location of headquarters|
|United States Army Europe and Africa||GEN Christopher G. Cavoli||Lucius D. Clay Kaserne, Wiesbaden, Germany|
|United States Army Central (ARCENT)/Third Army||LTG Ronald P. Clark||Shaw Air Force Base, South Carolina|
|United States Army North (ARNORTH)/Fifth Army||LTG John R. Evans Jr.||Fort Sam Houston, Texas|
|United States Army Pacific (USARPAC)||GEN Charles A. Flynn||Fort Shafter, Hawaii|
|United States Army South (ARSOUTH)/Sixth Army||MG William L. Thigpen||Fort Sam Houston, Texas|
|United States Army Cyber Command (ARCYBER)||LTG Stephen G. Fogarty||Fort Belvoir, Virginia|
|United States Army Space and Missile Defense Command/United States Army Strategic Command (USASMDC/ARSTRAT)||LTG Daniel L. Karbler||Redstone Arsenal, Alabama|
|United States Army Special Operations Command (USASOC)||LTG Jonathan P. Braga||Fort Bragg, North Carolina|
|Operational Force Headquarters||Current commander||Location of headquarters|
|Eighth Army (EUSA)||LTG Willard M. Burleson III||Camp Humphreys, South Korea|
|Direct reporting units||Current commander||Location of headquarters|
|Arlington National Cemetery and Soldiers' and Airmen's Home National Cemetery||Katharine Kelley (civilian)||Arlington, Virginia|
|United States Army Acquisition Support Center (USAASC)||Craig A. Spisak (civilian)||Fort Belvoir, Virginia|
|United States Army Civilian Human Resources Agency (CHRA)||Carol Burton  (civilian)||Fort Belvoir, Virginia|
|United States Army Corps of Engineers (USACE)||LTG Scott A. Spellmon||Washington, D.C.|
|United States Army Criminal Investigation Division (USACID)||SES Gregory D. Ford, Director||Quantico, Virginia|
|United States Army Human Resources Command (HRC)||MG Thomas R. Drew||Fort Knox, Kentucky|
|United States Army Intelligence and Security Command (INSCOM)||MG Michele H. Bredenkamp||Fort Belvoir, Virginia|
|United States Army Medical Command (MEDCOM)||LTG R. Scott Dingle||Joint Base San Antonio, Texas|
|United States Army Military District of Washington (MDW)||MG Allan M. Pepin||Fort Lesley J. McNair, Washington, D.C.|
|United States Army Test and Evaluation Command (ATEC)||MG James J. Gallivan||Aberdeen Proving Ground, MD|
|United States Army War College (AWC)||MG David C. Hill||Carlisle, Pennsylvania|
|United States Military Academy (USMA)||LTG Darryl A. Williams||West Point, New York|
Source: U.S. Army organization