No one should go to war for God's sake. He's perfectly capable of caring for his own. People go to war for societies based in their religion, which is a noble, and slightly different thing. As I look at the long story of Milocz called the history of the cross and the sword, some common themes seem to emerge. At least in the popular mind, in the mind that comes up with a reason for a war that the rulers might have embarked upon for a completely different agenda, a Christian attack on another Eastern monotheism often comes off as a bit of an attempt to wake a sleeping brother, to bring them into a more active and enlightened form of life. And of course, if the one you are trying to wake starts kicking and punching you when you try to wake them, you usually aren't dissuaded from the task. Many societies based in Eastern forms of religion veil their liveliness from the public area, from the marketplace. Perhaps if they were to show more signs of life in the public sphere, there would be less of a sense among the common people in the other countries that their spirits were asleep. The Middle Eastern societies do this with their immense construction projects and business deals, but so aggressively and ostentatiously big-project that it doesn't always ring true on the street.
Somewhat relatedly: I recall a column in the Washington Post by one of the Steppenwolf actors who went into the film world. He was talking about working on his first big-budget action movie. In one scene, he was on a plane, and he was supposed to hear terrorist gunfire, and then attack the terrorists. In situ, he heard the sound cue, and realized that it could have been any number of things on the plane. It was only the logic of the action movie that required him to think that it was terrorist gunshots. But he was being paid an immense amount of money. Anyone can sleepwalk their way through a Hollywood career on such terms.
It's an interesting neighborhood. Anciently where the schools stood, and very quiet, so they apparently knew a thing or two about the acoustics of the city and the mountain. Audible backyard chickens from time to time (very Brooklyn), and sometimes automatic rifle fire from the shooting range closer to the top of the hill (less so). But I suppose, given the usual way of things, I can't fault the birds for using the time to get a bit of small-arms proficiency training in.
Perhaps they'll make it in Hollywood someday.