War Department

Last updated September 19, 2025

War Department or Department of War may refer to current and historical ministries of defence, including:

War Department (United Kingdom), 1747–1857
War Office, British war department, 1857–1964
United States Department of War, 1789–1947
United States Department of Defense, 1947–present; unofficially the Department of War since 2025

See also

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