The 82nd Airborne Division was originally the 82nd Infantry Division of the Organized Reserve, and after being ordered into active military service on 25 March 1942, was converted to an airborne division on 15 August 1942; the 101st Infantry Division was disbanded in the Organized Reserve on 15 August 1942, and was concurrently reconstituted and activated in the Army of the United States as an airborne division on the same date. The 15th Airborne Division was constituted, but never activated.