The Department of Air Training (1942–1947; 1947–1954) was originally a part of the U.S. Army Ground Force's Field Artillery School at Fort Sill, Oklahoma. It trained Forward Observer pilots to act as organic spotter units for U.S. Army artillery battalions and brigades. The pilots were eventually not just used to adjust artillery fire, but to support naval gunfire, direct bombing missions, perform aerial reconnaissance, conduct medical evacuations, and perform liaison and command and control duties as well.