| United States|
| United States Air Force|
The 645th Bombardment Squadron is an inactive United States Air Force unit. It was last assigned to the 410th Bombardment Group. It was last stationed at Myrtle Beach Army Airfield, South Carolina, and was inactivated on 7 November 1945.
645th Bombardment Squadron Wikipedia
Established as a Third Air Force A-20 Havoc light bomber Operational Training Unit in mid-1943; Deployed to European Theater of Operations (ETO) in mid-1944; assigned to Ninth Air Force in England.
Entered combat in May 1944 and helped to prepare for the invasion of Normandy by assaulting coastal defenses, airfields, and V-weapon sites in France, and marshalling yards in France and Belgium. Supported the invasion in June by bombing gun positions and railway choke points. Assisted ground forces at Caen and St Lo in July and at Brest in August and September by attacking bridges, vehicles, fuel and ammunition dumps, and rail lines.
Moved to France in Sept, and through mid-December struck defended villages, railroad bridges and overpasses, marshalling yards, military camps, and communications centers to support the Allied assault on the Siegfried Line. Participated in the Battle of the Bulge, December 1944-January 1945, by pounding marshalling yards, railheads, bridges, and vehicles in the battle area. Continued to fly support and interdictory missions, aiding the drive across the Rhine and into Germany, February–April 1945, continuing attacks on enemy forces until the German Capitulation in May 1945.
Most of the squadron was demobilized during the summer of 1945; squadron returned to the United States and was assigned to Seymour Johnson Field, then Myrtle Beach Army Airfield, however was minimally manned and equipped. Inactivated in November 1945.Constituted 645th Bombardment Squadron (Light) on 16 Jun 1943
Activated on 1 Jul 1943
Inactivated on 7 Nov 1945
410th Bombardment Group, 1 Jul 1943-7 Nov 1945
Will Rogers Field, Oklahoma, 1 Jul 1943
Muskogee Army Airfield, Oklahoma, 4 Oct 1943
Laurel Army Airfield, Mississippi, 10 Jan 1944
Lakeland Army Airfield, Florida, 8 Feb-13 Mar 1944
RAF Birch (AAF-149), England, 4 Apr 1944
RAF Gosfield (AAF-154), England, 16 Apr 1944
Coulommiers Airfield (A-58), France, 27 Sep 1944
Juvincourt Airfield (A-68), France, 9 Feb 1945
Beaumont sur Oise Airfield (A-60), France, 22 May-25 Jun 1945
Seymour Johnson Field, North Carolina, c. 24 Aug 1945
Myrtle Beach Army Airfield, South Carolina, 5 Oct-7 Nov 1945
A-20 Havoc, 1944-1945
A-26 Invader, 1945