 The two then marched on Embrun, plundered it, and met an army of Mummolus.Defeated, they retreated back to Susa, in Italy, which was a Byzantine possession of the "magister militum", Sisinnius.Mummolus invaded Italy and forced Zaban and Rodanus to return to their own duchies, while Amo had to abandon his booty while crossing the Alps.