This is the point at which Hasdrubal first appears in the historical record. The Carthaginian Senate appointed him as a general, jointly with Bostar, to counter this threat. They took command of an army which was strong in cavalry and elephants and were joined by a third general, Hamilcar, the Carthaginian commander on Sicily, who was recalled along with 5,000 infantry and 500 cavalry. The total size and the makeup of the army is not known, but it was reported to be approximately the same size as the Roman army and a few months later, at the Battle of Tunis, the Carthaginians fielded 100 elephants, 4,000 cavalry and 12,000 infantry; the latter would have included many citizen-militia. Hasdrubal may have been the senior of the three Carthaginian generals as he is reported to have made the decision to march their army out to oppose Regulus.