A coalition of Germanic tribes, led by Ardaric, king of the Gepids, revolted against such slavery treatment, and "so they were armed for mutual destruction. War was waged in Pannonia, next to a river called Nedao. Various nations Attila had held in his sway came into combat there ... Goths, Gepids, Rugii, Suavi, Huns, Alans and Heruli". By "slavery" status is considered the pay of tributes and military service. There were many "grim clashes", but unexpected victory fell to the Gepids. Ardaric and his allies annihilated nearly 30,000 Huns and their allies. In the battle Attila's oldest son, Ellac, died. According to Priscus: