For the present agency overseeing the United States Armed Forces, see United States Department of Defense.
United States Department of War
Seal of the U.S. Department of War
Department overview
Formed
August 7, 1789; 234 years ago (1789-08-07)
Preceding department
Board of War and Ordnance
Dissolved
September 18, 1947; 76 years ago (1947-09-18)
Superseding agencies
Department of the Army
Department of the Air Force
Department executive
Secretary of War
Child department
U.S. Army
The United States Department of War, also called the War Department (and occasionally War Office in the early years), was the United States Cabinet department originally responsible for the operation and maintenance of the United States Army, also bearing responsibility for naval affairs until the establishment of the Navy Department in 1798, and for most land-based air forces until the creation of the Department of the Air Force on September 18, 1947.
The Secretary of War, a civilian with such responsibilities as finance and purchases and a minor role in directing military affairs, headed the War Department throughout its existence.
The War Department existed from August 7, 1789[1] until September 18, 1947, when it split into the Department of the Army and the Department of the Air Force. The Department of the Army and Department of the Air Force later joined the Department of the Navy under the United States Department of Defense in 1949.
^"The Establishment of the Department of War – US House of Representatives: History, Art & Archives". house.gov. Retrieved December 16, 2016.
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