|from the 1929 Greenbrier Military School Annual|
Cooper was drafted in October 1943. He was already married to Mary Fay Stuart. After basic training he was sent to the European theater and transferred from the replacement depot to I Company 116th Infantry on 3 Sep 1944. He was promoted to PFC on 14 Sep 1944. PFC Lightbown fought with the unit as a rifleman until killed in action on 10 Oct 1944.
PFC Lightbown was repatriated in 1947 and re-interred in Arlington National Cemetery in Arlington, Virginia.