Some partial information here:
"Operational History
World War II
"Douglas A/B-26 Invader of the 640th Bomb Squadron.
"Constituted as 409th Bombardment Group (Light) on 1 Jun 1943 and activated the same day. Used A-20's in preparing for duty overseas. Moved to RAF Little Walden England, Feb-Mar 1944, and assigned to
Ninth Air Force.
"The 409th flew the
A-20 "Havoc" and
A-26 "Invader" light bomber and was originally trained in low-level attack missions. However, the group was busy flying medium-altitude bombing runs from 10,000 ft. Over 100 missions were flown by the group, attacking coastal defences, V-weapon sites, aerodromes, and other targets in
France in preparation for the
invasion of Normandy. The group supported ground forces during the
Battle of Normandy by hitting gun batteries, rail lines, bridges, communications, and other objectives. During July 1944, aided the Allied offensive at