Ally Crest Commands answer:
/allyinvite [clan leader] The command used by an alliance leader to invite a clan to join their alliance.
/allyleave The command used by a clan leader to leave the alliance that their clan is currently a member of.
/allydismiss [clan name] The command used by an alliance leader to dismiss a particular clan from their alliance.
/allydissolve The command used by an alliance leader to dismiss their own alliance.
/allycrest The command used by an alliance leader to register a crest for their alliance.
/allyinfo The command used to look up the information about their own alliance.