▁late ▁marg ra ves . ▁▁ ▁At ▁first , ▁the ▁reb els ▁were ▁successful , ▁but ▁Ari bo ▁appe aled ▁to ▁not ▁only ▁Mor avia , ▁but ▁also ▁the ▁Emperor ▁Charles ▁the ▁F at , ▁who ▁confirmed ▁Ari bo ▁in ▁his ▁post , ▁to ▁which ▁he ▁had ▁been ▁appointed ▁by ▁Charles ' ▁father , ▁Louis ▁the ▁German , ▁back ▁in ▁ 8 7 1 . ▁S vat op l uk ▁inv aded ▁P ann onia ▁and , ▁capt uring ▁one ▁of ▁the ▁Wil hel min er ▁sons , ▁m util ated ▁him . ▁The ▁remaining ▁sons ▁then ▁with d rew ▁from ▁Charles ' ▁su zer ain ty ▁and ▁did ▁hom age ▁to ▁Arn ulf ▁of ▁Car inth ia , ▁Charles ' ▁bast ard ▁nep hew , ▁who ▁thus ▁est r anged ▁himself ▁from ▁his ▁uncle . ▁The ▁war ▁between ▁Arn ulf ▁and ▁S vat op l uk ▁es cal ated ▁after ▁the ▁former ▁refused ▁to ▁surrender ▁the ▁Wil hel min ers ▁after ▁a ▁request . ▁After ▁two ▁and ▁a ▁half ▁years , ▁Charles ▁himself ▁came ▁to ▁Ka um berg ▁to ▁receive ▁S vat op l uk ▁as ▁his ▁v ass al ▁and ▁accept ▁promises ▁of ▁peace . ▁An ▁actual ▁agreement ▁was ▁not ▁reached ▁between ▁the ▁Mor av ians ▁and ▁Arn ulf ▁until ▁late ▁ 8 8 5 . ▁▁ ▁The ▁war ▁is ▁generally ▁seen ▁as ▁having ▁greatly ▁augment ed ▁the ▁power ▁of ▁S vat op l uk ▁I ▁and ▁strength ened ▁his ▁b onds ▁to ▁the ▁Empire , ▁as ▁illustr ating ▁Charles ▁dimin