Desmond T. Doss was 23 years old when he was drafted into the U.S. Army in 1942. The lanky Lynchburg, Va., native was much like other young men of the Greatest Generation, but one thing set Desmond apart from the other new troops. He was a devout Seventh Day Adventist and refused to touch a weapon. Some of the men in his training unit made jokes about him, others threatened him, but Desmond held firm to his beliefs. The Army considered discharging him, but Desmond objected. “I’d be a very poor Christian if I accepted a discharge implying that I...