I can't recall any reward being mentioned, but assuming that the same message went out to every clan that would effectively be a Realm Divide looked at from the opposite perspective. It reads something like 'The Shogun considers the actions of the xxxx clan to be a threat to world peace, and requests that you go and eradicate them.', or something like that. Have you never had a diplomatic message from the Shogun asking you to eliminate a different clan? that one faction achieved much more in that campaign but no no their conquering is good while mine is bad I'm not sure about that. But What absolutely annoys me is that other factions can't trigger a Realm divide.
