It's natural for a man to defend what's dear to him: his own life, his home, his family. But in order to make him fight on behalf of his rulers, the rich and powerful who are too cunning to fight their own battles-in short to defend not himself but people whom he's never met and moreover would not care to be in the same room with him-you have to condition him into loving violence not for the benefits it bestows on him but for its own sake. Result: the society has to defend itself from its defenders, because what's admirable in wartime is termed psychopathic in peace. It's easier to wreck a man than to repair him. Ask any psychotherapist. And take a look at the crime figures among veterans.
John Brunner, Stand on Zanzibar
crime, human-nature, war