Bougainville Campaign
During World War II, Moore served as a psychiatrist in the United States Army's Bougainville Campaign as well as in New Zealand. On September 22, 1942, Moore gave a speech about Adolf Hitler's "Mein Kampf" entitled "What Hitler means in "Mein Kampf"" at the Fitzsimons Army Medical Center in Aurora, Colorado; a year later, it was reprinted in "Military Surgeon". Moore served as Lieutenant-Colonel in Nanking, where he was "director of medical operations". He was the recipient of the Bronze Star Medal for his war service.