 In 436, the Burgundians of King Gundacar were defeated and obliged to accept peace by Aetius and Avitus; however, the following year he sent Hunnic "foederati" to destroy them.Allegedly 20,000 Burgundians were killed in a slaughter which probably became the basis of the Nibelungenlied, a German epic.That same year Aetius was probably in Armorica with Litorius to suppress a rebellion of the Bacaudae under a certain Tibatto.