"In 1966 Larry Heinemann, a working-class twenty-two-year-old from Chicago, was drafted into the Army just as the American military buildup in Vietnam was going into overdrive. He served one year of combat duty with the 25th Infantry Division, from March 1967 to March 1968, most of it in the vicinity of Cu Chi (of tunnels fame). It was the most horrific and consequential year of his life and served as the raw material for his two subsequent classic...