Someone enlighten me if I'm mistaken, but the whole, I get the impression that summer camp culture in the USA is a legacy of the 1950s as a preparation for forced military service during those times. If so, surely it does not need to continue along those lines today.
There is indeed something in that statement. The same would apply for some YMCA activity, such as nude swimming used to be, in part, an acclimatization to the lack of privacy in military life.
The thing is though, that people living in the US won't experience it or think of summer camps in that manner. It becomes more apparent and more obvious once you've lived in other countries, especially those countries that have never made much of a fuss about the military or that don't have a long military tradition.
Thinking back on the days of the Cold War, it was my impression that Soviet youth organizations were also somewhat heavy on military preparedness and training. Belgium is about as un-military as a country can get in general attitude. Others, like France or Spain fall in somewhere in between. A traditional joke in French schools is that gym teachers are all too often former professional military (teaching is a good supplement to their military pension) and bring their attitudes about discipline and physical preparedness along with them to the schools. If the gym teacher was a former Legionnaire or paratrooper - well, look out. No pity to be expected ... ha ha.
In Spain a few years ago, an old fashioned Falangist type youth group from the Franco era, set up camp near a camping grounds we were staying. They too stressed military style activities in a way that most other modern Spaniards found laughable. You'd get the National Hymn in the morning and at night (a jaunty tune to be sure but it is still too related to the dictatorship for many people), long drawn-out salutes to the flag, military uniforms of course - Requétist berets, short black pants, khaki shirts with military pockets and braiding. Plus there was a rather disturbing religious element added, with calling out rosters of names of Falangist 'martyrs' from the Civil War, particular saints and such. They were also accompanied by black clad, long robed priests of a most sinister looking type, mean-eyed and glaring, they looked like modern day Inquisitors or those types who tend to Franco's monumental tomb in the Valley of the Fallen. The military tradition is still alive in certain circles of youth groups indeed.