I’m 60 and I turned 18 in 1974. I guess if he enlisted at 17 it’s possible but he would have been right at the tail end.
Maybe he’s nearly 61.
I was just nearing draft age when it ended, I am younger by two years.
My husband lied about his age when he joined the military. For his whole military career his paperwork showed 10-5-35 instead of 2-8-36.