Because the war I was thinking of is pretty humans only. Unless Robert wants to end up in Hanselstadt, which is a vampire-on-human bloodbath. I think Tibet would freak him out more, though, with the rampant outmatching on the part of the aggressors and the tanks and the bombs and the rampaging Tibetan goddesses in the distance...

Well, the illusions are supposed to function nearly perfectly. Even if they weren't required to work, they would be able to perform up to spec.