Kimbrough enlisted in the Army in July 1967, two weeks after graduating from Benjamin Franklin High School, because he felt that fighting for his country was preferable to the kind of fights be might get into if he stayed in his neighborhood. Kimbrough wanted to be a doctor, and often promised his parents that someday be and his four brothers would support them. The 20-year-old sergeant was a light truck driver in Vietnam, assigned to Headquarters and Headquarters Detachment of the 173rd Support Battalion, 173rd Air-borne Brigade. Kimbrough had extended his tour in Vietnam six months and was temporarily assigned to a South Vietnamese army armored company when he died on July 6, 1969. He was survived by his parents and four brothers.