South Vietnamese troops turn the twin 40 mm guns of an M42A1 Duster, an anti-aircraft vehicle on an M41 tank chassis, toward North Vietnamese positions along Route 1 on July 22, 1972. (AP/ Lo Hung)
AP/ Lo Hung
South Vietnamese troops turn the twin 40 mm guns of an M42A1 Duster, an anti-aircraft vehicle on an M41 tank chassis, toward North Vietnamese positions along Route 1 on July 22, 1972. (AP/ Lo Hung)
AP/ Lo Hung