 Seeing the Romans' siege engines, the Suessiones surrendered, whereupon Caesar turned his attention to the Bellovaci, who had retreated into the fortress of Bratuspantium (between modern Amiens and Beauvais).They quickly surrendered, as did the Ambiani.The Nervii, along with the Atrebates and Viromandui, decided to fight (the Atuatuci had also agreed to join them but had not yet arrived).