Leaving two legions and all of his baggage train behind in Agedincum, Caesar led the remaining legions to Gergovia. His sieges of Vellaunodunum, Genabum, and Noviodunum en route caused Vercingetorix to march to meet Caesar in open battle at Noviodunum, which Caesar won. Caesar then besieged and captured Avaricum and resupplied there. After resting his forces at Avaricum, he sent his top legate, Titus Labienus, with four legions north; this to keep the northern Gauls from interfering with his campaign against the Arverni.