I have no doubt. My grandfather on my father's side was in WWI and in France but he never saw combat by the time the war ended. He passed away in 1977, and I was 6. Would have been great to hear stories from him. My other grandfather did fight in WWII and was the bubble gunner in the B-17 Bomber. He and his buddies all enlisted with a nudge, nudge, wink , wink at age 17. He has a great story. His parents were from Belgium as was his older brother. They immigrated to Canada when my great grandmother was pregnant with my grandfather, so he had dual citizenship status of Belgian and Canadian. The immigrated to the US when he was 2 after my great grandmother died and moved to outside of Detroit into a sizeable post WW1 Belgian community there.
Fast forward to WW2 enlistment. He volunteered to serve as the bubble gunner in the Pacific theatre. Made several bombing runs over Japanese targets until one fateful day where his appendix ruptured on the bombing run. Obviously a horrendous deal and the pilot and crew wanted to turn back. He told them "finish the effing mission first. They did, then flew to the Philippines and they immediately knew he had sepsis at that point. He spent 5 months in the hospital there with his weight going from 180 to 112 lbs, and he was 6'1. We heard this story when I was 14--but not from him, but from one of the guys on the flight crew when there was a reunion, who felt we ought to know. He recovered and then spent several years pitching in the minor leagues with a couple of years in the bigs:
en.wikipedia.org
I would guess that his story is likely the same as many, many others of that generation--selfless with balls bigger than the the moon. My guess is that there are probably guys like that today, but not near the amount. It is a great story for him and others, that you hope people can take lessons from.