<Ul> <Li> Aeronautical Division , Signal Corps ( 1 August 1907 -- 18 July 1914 ) </Li> <Li> Aviation Section , Signal Corps ( 18 July 1914 -- 20 May 1918 </Li> <Li> Division of Military Aeronautics ( 20 May 1918 -- 24 May 1918 ) </Li> <Li> Air Service , U.S. Army ( 24 May 1918 -- 2 July 1926 ) </Li> <Li> U.S. Army Air Corps ( 2 July 1926 -- 20 June 1941 ) * </Li> <Li> U.S. Army Air Forces ( 20 June 1941 -- 17 September 1947 ) * * </Li> </Ul>
<Ul> <Li> Aeronautical Division , Signal Corps ( 1 August 1907 -- 18 July 1914 ) </Li> <Li> Aviation Section , Signal Corps ( 18 July 1914 -- 20 May 1918 </Li> <Li> Division of Military Aeronautics ( 20 May 1918 -- 24 May 1918 ) </Li> <Li> Air Service , U.S. Army ( 24 May 1918 -- 2 July 1926 ) </Li> <Li> U.S. Army Air Corps ( 2 July 1926 -- 20 June 1941 ) * </Li> <Li> U.S. Army Air Forces ( 20 June 1941 -- 17 September 1947 ) * * </Li> </Ul>
when did the army air corp became the air force
when did the army air corp became the air force
20 June 1941
20 June 1941