Quote Originally Posted by Lupus753 View Post
It's not nearly as absurd as Bucky. A kid fighting crime is one thing, but a kid on the front lines of World War II? C'mon.
They altered that slightly, in the current canon (I believe), it's said that he started fighting when he was 16, and it was not unheard of for kids that young (and sometimes younger), to lie about their age to get into the army.

Though the implication that he's being so blatant about it is a bit of a stretch.