'United Press International Photographer' ink stamp verso and typescript descriptive label 'SGP 1507138 (file) First Prize Winner…Kyoichi Sawada won top prize (12/16) for news photography at the 10th Annual World Press Photo Exhibition'
(Wikipedia - accessed: 7 December 2013):
The famous 1966 photograph[2] shows U.S soldiers of the 1st Infantry division dragging a dead Viet Cong fighter to a burial site behind their M113 armored personnel carrier, after he was killed in a fierce night attack by several Viet Cong battalions against Australian forces during the Battle of Long Tan on 18 August 1966.
