A minor injury for a foot soldier? Guys were disqualified for flat feet. And many millions of draft age guys obtained student deferments for four or more years.
Lots of folks blabbering about those years who have no clue what they are talking about.
And bone spurs are not an injury, but a growth on a bone, or a calcium deposit. I've known a couple of people who had then and they are not minor. Can make it very difficult to get around until corrected.
Nope, couldn't be a good military man until a bone spur was corrected.