BATTLES IN THE MONSOON by S.LA. Marshall. 408 pages. Morrow. $6.95.
Viet Nam is no war for the classic military historian. It offers no vast clash of arms; no divisions sweep and pivot to the grand strategy of latter-day Clausewitzes. Instead there are quick, dirty fire fightsusually on no more than platoon or company scaleset in copses of bamboo and thorn vine so thick that men kill at a range of 10 ft. without having once seen each other. It is a war of leg-shearing booby traps and dung-smeared punji stakes, of professional skill and personal courage. It is also a war...