I was 11 years old. My father was one of the first Classical Pentecostal Holiness Ministers in Oklahoma, and he called for all of the Pentecostal Ministers in the world to preach every sermon from then on on the subject of: "War no more, war no more, pray to God there is war no more."
After being an Aviation Cadet, I was a flight instructor, teaching Cadets to fly aircraft in Texas. I recall how well we received the news, as college boys who volunteered for WWII service and would soon be going back to college where we would be taught to think again, instead of simply following orders and learning procedures used in the previous war. The military stresses obedience above all. Those, of all ranks, do little creative thinking that might modify a method already in place. Too much emphasis is placed on traditional strategy and tactics.