" ▁(" Str ong ") ▁for ▁his ▁sta unch ness ▁and ▁his ▁ab ilities ▁to ▁suddenly ▁reverse ▁the ▁fort unes ▁of ▁batt les . ▁In ▁ 1 3 9 8 ▁he ▁was ▁at ▁the ▁service ▁of ▁Per ug ia ▁against ▁the ▁Milan ese ▁troops ▁of ▁Gian ▁G ale azzo ▁Vis cont i , ▁to ▁whom ▁M uz io ▁soon ▁switched ▁his ▁loyal ty ▁following ▁the ▁typical ▁behavior ▁of ▁mer cen ary ▁ch ie ft ains ▁of ▁the ▁time . ▁Later ▁he ▁fought ▁for ▁Florence ▁against ▁Vis cont i ▁but ▁in ▁ 1 4 0 2 , ▁at ▁the ▁battle ▁of ▁Cas ale c chio , ▁was ▁defeated ▁by ▁his ▁former ▁master ▁Al ber ico ▁da ▁Barb iano . ▁In ▁ 1 4 0 6 ▁he ▁captured ▁P isa ▁and ▁was ▁subsequently ▁h ired ▁by ▁Nic col ò ▁III ▁d ' E ste ▁of ▁Ferr ara , ▁who ▁was ▁being ▁men ac ed ▁by ▁Otto b ono ▁Ter zi ▁of ▁Par ma . ▁ ▁King ▁Lad is laus ▁of ▁Nap les ▁named ▁him ▁Gran ▁Con nest abile ▁of ▁his ▁kingdom . ▁S for za ' s ▁military ▁qual ities ▁were ▁mostly ▁needed ▁against ▁Florence ▁and ▁the ▁Pope . ▁He ▁remained ▁for ▁the ▁rest ▁of ▁his ▁life ▁in ▁the ▁Kingdom ▁of ▁Nap les , ▁after ▁the ▁King ' s ▁death ▁( 1 4 1 4 ), ▁at ▁the ▁service ▁of ▁queen ▁Joan ▁II . ▁However , ▁he ▁attract ed ▁the ▁je alous y ▁of ▁Joan ' s ▁favorite , ▁P and olf ello ▁Alo po