 It was inactivated at Columbia Army Air Base, South Carolina on 1 May 1944.Established as a B-25 Mitchell medium bombardment squadron in early 1942; trained under Third Air Force.Assigned to Columbia Army Air Base, South Carolina as first an Operational Training Unit (OTU) for newly formed squadrons, then in 1943 becoming a Replacement Training Unit (RTU) for pilots and aircrew on the B-25 prior to the personnel being assigned overseas to combat units.