Not to mention the aftermath if you made it through all of that. "PTSD" wasn't a thing back then. At best, they called it "shell-shock". And psychological care once you got home? Forget about it. You were supposed to go back to work as if it never happened. But the soldiers were welcomed back as heroes and not spit on like the Vietnam vets. I wonder if that helped? I wonder what the difference was.
I imagine PTSD occurrence is a lot lower in a formal state to state war than in insurgency fighting, where you're always questioning whether that farmer you just shot was a combatant or just some random dude trying to not die.