Grunts: U.S. Infantry in Vietnam : The Illustrated History of the American Soldier, His Uniform and His Equipment (G.I. Series) by Christopher J. Anderson
The 'grunts' are the line infantry, the men who actually fought the war in Vietnam. Who humped up one worthless hill after another, searching for an elusive enemy. Who were as likely to be killed by heat stroke or 'friendly fire' as Viet Cong.