Caesar responded quickly. He force-marched six legions north to Orléans, where the rebellion had begun, and then to Gergovia, the home of Vercingetorix. At the same time, he sent his deputy Titus Labienus with four legions to subdue the Parisii and their allies, the Senons. The Commander of the Parisii, Camulogene, burned the bridge that connected the "oppidum" to the left bank of the Seine, so the Romans were unable to approach the town. Then Labienus and the Romans went downstream, built their own pontoon bridge at Melun and approached Lutetia on the right bank. Camulogene responded by burning the bridge to the right bank and burning the town, before retreating to the left bank and making camp at what is now Saint-Germain-des-Prés.