'Cause I figure it's easier to ask than to try to wade through the internet for this one:
Although I realize it would've been possible, are there any confirmed US veterans who served in World War II, Korea, and Vietnam?
If so, any of those who fought in Spain during the Spanish Civil War?
Yeah, it's a weird random question. I was just thinking it could feasibly be possible, if someone were born around the end of WWI, for them to follow Hemingway to fight in Spain (possibly lying about his age), then join the military and fight in WWII, and become a career serviceman, finally winding up as a general during Vietnam in his late 50s and early 60s.