Hasdrubal Gisco
Gnaeus, having lost his numerical advantage, decided to withdraw north after Mago and Hasdrubal Gisco arrived with their armies. The Romans moved out of their camp, leaving their camp fires burning, and made for the Ebro at night. The Numidians located them the following day; their attacks forced the Romans to take position for the night on a hilltop near Ilorca. The combined Carthaginian armies arrived during the night. As the ground was too stony for digging the Romans tried to create a defensive wall with baggage and saddles. The Carthaginians easily overran these makeshift fortification, destroying Gnaeus's army.