The reason for Belisarius' outburst was at first unclear, but as the Goths approached the moat, he drew forth his bow and shot, one after another, three Ostrogoth riders. The soldiers on the walls took this as an omen of victory and started to shout in celebration. Then Belisarius revealed his thought, as he ordered his archers to concentrate their fire on the exposed oxen, which the Goths had so thoughtlessly brought within bowshot distance from the walls. The oxen were dispatched quickly, and the four towers were left there, useless, before the walls.