 The new duke led an expedition into the Slavic territory (Carniola) and pillaged it as a proof of his valour.Rachis and his warriors also distinguished themselves in the defence of Liutprand when he was attacked and betrayed on the march to Fossombrone by the rebellious Duchy of Spoleto.As a result of the prestige that he had gained from these ventures, Rachis became king of the Lombards in 744, deposing Liutprand's successor Hildeprand after a few months of rule.