look now — in all of history men have been taught that killing of men is an evil thing not to be countenanced. Any man who kills must be destroyed because this is a great sin, maybe the worst sin we know. And then we take a soldier and put murder in his hands and we say to him, ‘Use it well, use it wisely.' Go out and kill as many of a certain kind or classification of your brothers as you can. And we will reward you for it.