Established as a B-24 Liberator heavy bomb squadron in 1942. Mission was as an Operational Training Unit (OTU) under Second Air Force training B-24 replacement pilots and aircrew. Inactivated in 1944 when B-24 Liberator crew training was ended. Reassigned in November 1965 permanently to Thailand, where it prepared for combat fighter operations at Korat RTAFB. Engaged in combat operations over Indochina from November 1965 until inactivated in October 1972, flying F-105s and, after 1968, it flew F-4s.