Marienburg was the target in two 8th Air Fore missions. One on October 9, 1943, by 96 B-17 Flying Fortresses and the other by 98 B-17s on April 9, 1944. On the October '43 raid 2 B-17s were lost and 13 damaged. On the April '44 raid, 6 B-17s were lost and 44 damaged. The highest, single day loss by the 8th Air Force was on the March 6, 1944 Berlin mission when 69 B-17s were shot down.