Lineage. Established as 42 Bombardment Group (Medium) on 20 Nov 1940. Activated on 15 Jan 1941. Redesignated 42 Bombardment Group, Medium, on 6 Sep 1944. Inactivated on 10 May 1946. Consolidated (31 Jan 1984) with the 42 Bombardment Wing, Heavy, which was established on 19 Feb 1953. Activated on 25