|Country United States|
|Branch United States Air Force|
The 670th Bombardment Squadron is an inactive United States Air Force unit. It was last assigned to the 416th Bombardment Group. It was last stationed at Camp Patrick Henry, Virginia, and was inactivated on 12 October 1945.
Established in early 1943 as a B-25 Mitchell medium bomber Operational Training Squadron under Third Air Force. Received A-20 Havoc light attack bombers and trained in attack and light bombardment tactics; deployed to European Theater of Operations (ETO) in early 1944, assigned to Ninth Air Force in England.
From England, engaged in tactical bombardment of enemy targets mainly in coastal areas of France and the Low Countries. Attacked V-weapon sites in France. Flew a number of missions against airfields and coastal defenses to help prepare for the invasion of Normandy. Supported the invasion in June 1944 by striking road junctions, marshalling yards, bridges, and railway overpasses. Assisted ground forces at Caen and St Lo in Jul and at Brest later in the summer, by hitting transportation facilities, supply dumps, radar installations, and other targets. In spite of intense resistance, the group bombed bridges, railways, rolling stock, and a radar station to disrupt the enemy's retreat through the Falaise gap, 6–9 August 1944. Assisted the airborne attack on the Netherlands in September. Supported the assault on the Siegfried Line by pounding transportation, warehouses, supply dumps, and defended villages in Germany.
Converted to A-26 Invader aircraft in November 1944. Attacked transportation facilities, strong points, communications centers, and troop concentrations during the Battle of the Bulge, December 1944-January 1945. Aided the Allied thrust into Germany by continuing its strikes against transportation, communications, airfields, storage depots, and other objectives, February—May 1945. Bombed flak positions in support of the airborne assault across the Rhine in March 1945. Demobilized in France after the German Capitulation during the summer of 1945; squadron inactivated as a paper unit in November.