Five months had been employed in the march from New Carthage to the plains of Italy, of which the actual passage of the Alps had occupied fifteen days. Hannibal's first care was now to recruit the strength of his troops, exhausted by the hardships and fatigues they had undergone. After a short interval of repose, he turned his arms against the Taurinians (a tribe bordering on, and hostile to, the Insubrians), whom he quickly reduced, and took their principal city (Turin). The news of the approach of P. Scipio next obliged him to turn his attention toward a more formidable enemy. In the first action, which took place in the plains westward of the Ticinus, the cavalry and light-armed troops of the two armies were alone engaged, and the superiority of Hannibal's Numidian horse at once decided the combat in his favor. The Romans were completely routed, and Scipio himself severely wounded; in consequence of which he hastened to retreat beyond the Ticinus and the Po, under the walls of Placentia. Hannibal crossed the Po higher up, and, advancing to Placentia, offered battle to Scipio; but the latter declined the combat, and withdrew to the hills on the left bank of the Trebia. Here he was soon after joined by the other Consul, Ti. Sempronius Longus, who had hastened from Ariminum to his support. Their combined armies were greatly superior to that of the Carthaginians, and Sempronius was eager to bring on a general battle, of which Hannibal, on his side, was not less desirous, notwithstanding the great inferiority of his force. The result was decisive; the Romans were completely defeated, with heavy loss; and the remains of their shattered army, together with the two Consuls, took refuge within the walls of Placentia. The battles of the Ticinus and Trebia had been fought in December, and the winter had already begun with unusual severity, so that Hannibal's troops suffered severely from cold, and all his elephants perished except one. But his victory had caused all the wavering tribes of the Gauls to declare in his favor, and he was now able to take up his winter quarters in security, and to levy fresh troops among the Gauls while he awaited the approach of spring. [Illustration: Coasts of the Mediterranean, illustrating the History of the Punic.]