I spent a day at Ft. Wayne (Detroit) in 1966, with a bunch of my high school classmates.
Most of us were freshmen in college and were notified to report for our draft physicals.
A Bus took us there from the local draft board.
After a battery of inane questionnaires and testing of aptitude and knowledge, we spent three hours in our underwear, "hopping like frogs" and submitting to other diagnostic medical analysis.
Although, I was not 'anti-war' and maybe mildly interested in the military, a day of being rudely treated like crap wonderfully clarified my thinking.
My country certainly had the power to draft me, but, I sure was not going to volunteer (or screw up my student deferment).
Sadly, that was the last time a lot of us saw each other. We didn't appreciate that, at the time.
p.s. After it was turned over to The City of Detroit and became a museum, I had some great adventures at "Historic Ft. Wayne".