It was a few weeks into a months-long operation in Vietnam's A Shau Valley on Feb. 13, 1969, when Marine Corps Cpl. Daniel "Duke" Heller stepped off on patrol to find the elusive North Vietnamese ...

The US Marine Corps’ deadliest sniper ... replica of the M40 sniper rifle he used during the Vietnam War. Pfc. Garrett White From 1968 to 1969, Mawhinney — still only a teenager — was ...