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Team: The smallest unit. A fire team consists of a team leader (usually a sergeant or corporal ), a rifleman, a grenadier, and an automatic rifleman. A sniper team consists of a sniper who engages the enemy and a spotter who assists in targeting, team defense, and security. 4 soldiers.
This is a list of current formations of the United States Army, which is constantly changing as the Army changes its structure over time. Due to the nature of those changes, specifically the restructuring of brigades into autonomous modular brigades, debate has arisen as to whether brigades are units or formations; for the purposes of this list, brigades are currently excluded.
The history of the United States Army began in 1775, as part of the United States Armed Forces. The Army's main responsibility has been in fighting land battles and military occupation. The Corps of Engineers also has a major role in controlling rivers inside the United States. The Continental Army was founded in response to a need for ...
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 ...
See Structure of the United States Army for a detailed treatment of the history, components, administrative and operational structure and the branches and functional areas of the Army. The U.S. Army is made up of three components: the active component, the Regular Army; and two reserve components, the Army National Guard and the Army Reserve.
The Pentagon, headquarters of the United States Department of Defense.. The United States Department of Defense (DoD) has a complex organizational structure.It includes the Army, Navy, the Marine Corps, Air Force, Space Force, the Unified combatant commands, U.S. elements of multinational commands (such as NATO and NORAD), as well as non-combat agencies such as the Defense Intelligence Agency ...
Field armies. First Allied Airborne Army. First United States Army —U.S. Army Training, Readiness, and Mobilization command formation. Second United States Army — United States Army Cyber Command. Third United States Army — United States Army Central command formation. Fourth United States Army.
The United States Army Central, formerly the Third United States Army, commonly referred to as the Third Army and as ARCENT, is a military formation of the United States Army that saw service in World War I and World War II, in the 1991 Gulf War, and in the coalition occupation of Iraq. It is best known for its campaigns in World War II under ...