This area shows what the impact the military draft had, on male society. (For thousands of years, too.)
Every guy from early school, knew that one day he might face military service, complete with the rigors that involved.
School playground activity and athletics, provided training for all males, if they liked it or not.
But over time, mandatory physical education classes have been eliminated, and nobody has to serve if they do not want to.
The path to being a soft, pansy-ass nerd is easy. So many follow it these days.