United States Army Air Service was created in 1918.
Association of the United States Army was created in 1950.
Sixth United States Army Group was created in 1944.
United States Army Corps of Engineers was created in 1775.
United States Army Medical Unit was created in 1956.
United States Army Ordnance Museum was created in 1967.
United States Army War College was created in 1901.
Twelfth United States Army Group was created in 1944.
United States Army Aviation Museum was created in 1956.
United States Army Air Forces was created in 1941.
United States Army Air Corps was created in 1926.
United States Army Aviation Branch was created in 1983.
United States Army Security Agency was created in 1945.