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In this Sept. 21, 1966 photo, U.S. Marines emerge from their muddy foxholes at sunrise after a third night of fighting against continued attacks of north Vietnamese 324 B division troops during the Vietnam War. The war ended on April 30, 1975, with the fall of Saigon, now known as Ho Chi Minh City, to communist troops from the north. (AP Photo/Henri Huet)