I had just started The Reluctant Communist and had to put it down and immediately check things out. On page 10 of the book, Charles Robert Jenkins claims that North Carolina did not have a record of his 1940 birth and so he could safely lie about his age and enlist in the National Guard at age 15.
I don't know why the National Guard did not find his birth record; they must not have had a subscription to ancestry.com. In any case, Jenkins got away with it. Not the brightest guy, Jenkins also thought he could get away with deserting to North Korea with only minor inconvenience. Stuck there for 40 years, Jenkins admits that this plan didn’t work out so well.