 However, the Ostrogoths routed the united forces of their enemies in the Battle of Bolia in 469.After the Ostrogoths left Pannonia in 473, the Gepids captured Sirmium (now Sremska Mitrovica in Serbia), a strategically important town on the road between Italy and Constantinople.In 489, Thraustila, King of the Gepids, tried to hinder the Ostrogoths from crossing the river Vuka during Theoderic the Great's campaign against Italy, but the Ostrogoths routed Thraustila's army.