 It seems that, as the ruler of the ancient capital, Zaban held a certain superiority of rank over his fellow "duces" and may have acted as their commander-in-chief.In 574, Zaban invaded the lands of Guntram, King of Burgundy, in what is today Switzerland, but was repulsed and had to return to Italy.In 575, Zaban and his fellow dukes Amo and Rodanus invaded the valleys of the Rhône and Saône.