Lance Corporal John Gentry, armed with an M-16 rifle, is seen on perimeter watch during the Vietnam War. The photograph, taken on November 7, 1969, features a military water purification plant and shows the importance of water supply and purification in the field. The image was captured by Sergeant Nelson and is part of the Defense Department's photo collection.

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Size: 3304px × 2104px
Photo credit: © piemags/NBV / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1969, 1st, 7, a374342, activities, american, corporal, corps, defense, department, division, field, gentry, gvb-378, john, lance, m16, marine, military, nelson, november, perimeter, pl, plants, purification, rifle, sgt, supply, vietnam, war, watch, water