Lineage. Constituted as 740 Bombardment Squadron (Heavy) on 14 May 1943. Activated on 1 Jun 1943. Redesignated as 740 Bombardment Squadron, Heavy, on 6 Mar 1944. Inactivated on 9 Sep 1945. Redesignated as 740 Bombardment Squadron, Very Heavy, on 27 Dec 1946. Activated in the Reserve on 10 Jan