The 35th Infantry Division, formerly known as the 35th Division, is an infantry formation of the Army National Guard at Fort Leavenworth. The 35th Division was organized August 25, 1917, at Camp Doniphan, Oklahoma, as a unit of the National Guard, with troops from Missouri and Kansas. It was inactivated in 1919, but the division headquarters was reconstituted in 1935 and it served with a brief interruption until it was inactivated again in 1963. The division was reactivated and the headquarters and headquarters company federally recognized on August 25, 1984, at Fort Leavenworth, Kansas.