Attack on Nazi E-boat base. Two 'boxes' of Ninth U.S.

Attack on Nazi E-boat base. Two 'boxes' of Ninth U.S. Air Force B-26 medium bombers, eighteen in each, head out across the North Sea on a mission against enemey E-boat pens at IJmuiden, Holland. More than 350 Ninth Air Force Marauders, augumented by formations of RAF and Dutch Mitchels and Bostons carried out the attack. The Marauders alone dropped more than 600 tons. It was the biggest single operation in Ninth Air Force history.