What branch of armed forces, was the subject of "Battle Hymn of Lt. Calley" a member of?
Terry Nelson (musician):  The single, entitled "Battle Hymn of Lt. Calley", was a spoken-word recording with a musical background which discussed William Calley and the incident at My Lai, for which Calley was court-martialed in 1970-71. William Calley: William Laws Calley Jr. (born June 8, 1943) is a former United States Army officer convicted by court-martial of murdering 22 unarmed South Vietnamese civilians in the My Lai Massacre on March 16, 1968, during the Vietnam War.
Army