On the right, Quintus Fabius told the cavalry to outflank the Samnite wing and attack it in the flank and ordered his infantry to push forward. He then called in the other reserves. The Samnites broke and fled past the Senone line. The Senones formed a testudo (tortoise) formation - where the men aligned their shields in a compact formation covered with shields at the front and top. Quintus Fabius ordered 500 Campanian lancers to attack them in the rear. This was to be combined with push by the middle line of one of the legions and an attack by other cavalry units. Meanwhile, Quintus Fabius and the rest of the army took the Samnite camp by storm and cut off the Senones in the rear. The Senone were defeated. According to Livy the Romans lost 8,700 men and their enemy 20,000.