 According to Jordanes, the Gepid king, Ardaric, who "became enraged because so many nations were being treated like slaves of the basest condition", was the first to take up arms against the Huns.The decisive battle was fought at the (unidentified) Nedao River in Pannonia in 454 or 455.In the battle, the united army of Gepids, Rugii, Sarmatians and Suebi routed the Huns and their allies, including the Ostrogoths.