James Crumley: One to Count Cadence (USA 1987)
From the Publisher:
Crumley's disturbing Vietnam novel. In '62, Sergeant Krummel assumes command of a crew of rebellious, drunken enlistees. Surviving military absurdities only to be shipped to Vietnam, Krummel's band confront their worst fears while losing faith in America...
James Crumley: One to Count Cadence. Vintage Books, ISBN: 0394735595 (May, 1987), 352 p., $14.00.