The War Department, headed by the Secretary of War, was created in 1789 and was responsible for both the Army and Navy until the the founding of a separate Department of the Navy in 1798.
The War Department was created in 1789. The War Department was headed by the Secretary of War. The War Department was responsible for both the Army and Navy until the the founding of a separate Department of the Navy in 1798. The War Department was headed by the Secretary of War.