I've been meaning to share this bit of text ever since I read it several months ago. The following is an exchange between Sergeant Fred Colon and Corporal Nobby Nobs of the Ankh-Morpork City Watch from Thud! (Wiki with spoilers, Amazon) by Terry Pratchett.
"War, Nobby. Huh! What is it good for?" he said
"Dunno, sarge. Freeing slaves, maybe?"
"Defending yourself from a totalitarian aggressor?"
"All right, I'll grant you that, but--"
"Saving civilization against a horde of--"
"It doesn't do any good in the long run is what I'm saying, Nobby, if you'd listen for five seconds together," said Fred Colon sharply.
"Yeah, but in the long run what does, sarge?"
The whole book is a good read. Leave it to Terry Pratchett of make ethnic and fundamentalist strife damningly funny.