Strozzi-Heckler talks in his book about the fraternity, or brotherhood of warriors. I don’t have the book with me right now so I can’t come up with specific citations, but the premise is that part of why men are warriors is because as such they receive positive affirmation from other men. A while back I wrote about Susan Faludi’s book, Stiffed, in which she comes to the same conclusion.
This aspect of fraternity has apparently always been either a part of the warrior spirit, or coincident with it. It is easy to find examples of the warrior fraternity in ancient literature; Achilles and Patroclus, Gilgamesh and Enkidu, Beowulf & Wiglaf, David and Jonathan.
The strongest point that Strozzi-Heckler seems to make in his jumbled mess of a book is that it would be a good thing if someone could find some way for men to tap into that warrior spirit and affirm each other without actually having to be destructive. To give that warrior archetype an outlet, not for aggression and violence, but rather for service.