American troops preparing field positions during Operation Big Spring, in the Vietnam War
U.S. Soldiers of 2nd Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade, use trenching tools to dig foxholes during Operation Big Spring,February 4, 1967,14 miles North of Chin Hoi, South Vietnam. One soldier takes time out to adjust his socks and boots. Another is seen speaking on a field telephone. Location: Vietnam. Date: February 4, 1967.