Sgt. Rock on D-Day 2

With Sgt. Rock #339 (April, 1980), Sgt. Rock proves "I Was Here Before", relating the tale (told by Robert Kanigher and Frank Redondo, under a Joe Kubert cover) of how Rock left Easy Company for a bit, working with British and Canadian commandos to storm the beaches of Normandy a year before June 6th, 1944.