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| - 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.
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| abstract
| - 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. Reactivated by Strategic Air Command in 1958 as Missile Training squadron at Cooke (later Vandenberg) AFB. Provided training for Royal Air Force personnel in the operation and launching of the PGM-17 Thor Intermediate-Range Missie. Also provided training to SAC personnel on SM-65 Atlas and HGM-25A Titan I Intercontinental Ballistic Missiles. Inactivated July 1, 1959. Reactivated again as a B-52H Stratofortress strategic bombardment squadron in 1963, replacing a provisional squadron at K. I. Sawyer AFB, Michigan. The squadron conducted strategic bombardment training and air refueling operations on a global scale to meet SAC commitments. From 1964 to 1975, the squadron supported combat operations over Indochina by rotating B-52 and KC-135 flight crews to Guam and Okinawa, participating in Operation Arc Light, Linebacker I and Linebacker II. In 1980, two 644th Bomb Squadron crews (S-21 and S-31) received the Mackay Trophy for "executing a nonstop, around-the-world mission with the immediate objective of locating and photographing elements of the Soviet Navy operating in the Persian Gulf. Remained on nuclear alert until the end of the Cold War, being inactivated in 1994 with the inactivation of the parent 410th Bomb Wing and the closure of K. I. Sawyer AFB, MI.
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![[RDF Data]](/fct/images/sw-rdf-blue.png)