Stationed at the U.S. Army's counterintelligence headquarters in Saigon, David Noble was sent north to launch the first covert intelligence-gathering operation in Vietnam's Central Highlands. Living among the Montagnard--the region's indigenous tribal people, deemed critical to winning the war--Noble documented their training, as American Green Berets taught them to use rifles rather than crossbows and spears, while confronting his own challenges in the field.Part memoir, part photojournal, his compelling narrative throws light on a little-known corner of the Vietnam War in its early years--before the Tonkin Gulf Resolution and the deployment of combat units--and traces his transformation from novice intelligence agent and believer in the war to political dissenter and active protester.