Somewhere around Con Thien, Vietnam: A Marine scans the perimeter for any enemy activity. Marines launched another phase of ...

That day, three squads of Marines with Charlie Company, 1st Battalion, 9th Marine Regiment, known as "The Walking Dead," cut through tall grass that surrounded them and obscured their view.

The Marines, from 1st Battalion, 9th Marine Regiment in Camp Lejeune, N.C., were conducting live-fire training with 60 mm mortars at Hawthorne Army Depot in the Nevada desert. 60 mm mortars can ...