11th April 1968: American troops on Hill Timothy preparing for battle against the Vietcong during the Vietnam war. (Photo by Terry Fincher/Express/Getty Images)
Subject Keywords: Mortar, Group, Mode of Transport, Conflict, Weapon, Finance, Transportation, Land Vehicle, Air Vehicle, Horizontal, Flag, Black And White, Southeast Asia, War, Vietnam, Airplane, Human Role, Armed Forces, Army, USA, Helicopter, Military, Politics, Battlefield, Males, Preparation, 1960-1969
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