It starts with SEALs in Afghanistan, because of course it does, and then the author loosely strings together a bunch of unconvincing anecdotes to support his core idea.
The worst part is his constant reference to various hormones and fight or flight responses in a superficial way that would make even TEDx feel ashamed.
Edit: there is absolutely no doubt in my mind that the military can produce outstanding leaders. Humans have been battling for too long as not to have developed specialised training systems.
My gripe is with the book alone.