Book excerpt: Vietnam was the first war America lost on the ground. In this fascinating account, historian Nigel Cawthorne traces the conflict from its inception to its traumatic end. He looks at the political events that led tot he war and examines its impact upon both the Americans and the Vietnamese, whose battle for the independence of their country was to leave lingering scars upon the American psyche. Vietnam: A War Lost and Won is an even-handed assessment of a conflict whose wounds would take a generation to heal.