Regulus and the Carthaginians

When spring arrived and no treaty had been reached, regulus began to get fidgety. As he watched them, he realized there was nothing wrong with the infantry. The cavalry was magn cent and the war elephants practically indestructible. Xanthippus placed the war elephant at the head of his army and the cavalry on the wings. Regulus responded by deepening his line so the elephants could not break through them completely. He essentially flipped the rectangle that was his army so that the short end, rather than the broadside, were facing the carthaginians. It all but guaranteed carthaginian victory before the battle even began.