The DoD's culture is indeed unique. There aren't many corporations where you're enlisted for a set duration, have to go through a very unpleasant Basic Training Bootcamp, and aren't allowed off the premises without permission.

And that's before you get to the sharp end, which is about killing people.

It's certainly going to take a certain kind of personality to be happy in that kind of setting.

Whether you can generalise that to corporate life in general and software development in particularly is very, very debatable.

Of course this is a popular trope with a certain kind of manager - business as sport, business as military command, and so on.