Father-in-law, a Quaker, was a medic and scout on Okinawa. The phrase, 'war is hell,' is often used without real understanding. He understood. For a graphic look, see the movie 'Hacksaw Ridge.' From Wikipedia:
"Hacksaw Ridge is a 2016 biographical war film directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan, based on the 2004 documentary The Conscientious Objector. The film focuses on the World War II experiences of Desmond Doss, an American pacifist combat medic who, as a Seventh-day Adventist Christian, refused to carry or use a weapon or firearm of any kind. Doss became the first conscientious objector to be awarded the Medal of Honor, for service above and beyond the call of duty during the Battle of Okinawa."