Lineage. Constituted as 345 Troop Carrier Squadron, Medium, on 10 May 1949. Activated in the Reserve on 26 Jun 1949. Ordered to active service on 16 Apr 1951. Inactivated on 16 Jan 1953. Redesignatd as 345 Troop Carrier Squadron, Assault, Rotary Wing, on 8 Dec 1954. Activated on 8 Mar 1955.