<span>It was a United States cabinet that was in charge of the operation and maintenance of the United States Army. The War Department existed from 1789, till 1947, when it was split into Department of the Army and Department of the Air Force and joined the Department of the Navy as part of the new joint National Military Establishment (NME). It was renamed US Department of Defence in1949.</span>
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Bro these discussions
Explanation:
but i can't answer it sorry