In Italy the war was shifting to the south, and about 213 b.c. Hannibal was besieged in the town of Tarentum by a Roman fleet which had blocked the entrance to the gulf on which the city was situated. The alarm in Tarentum was great; escape seemed impossible; but Hannibal ordered boards to be placed in the night across a little spit of land that lay between the gulf and the open sea. When darkness fell, the boards were greased, and ox-hides stretched tightly over them. Then one by one the imprisoned Tarentine fleet was dragged along the boards and launched on the other side, and when all the ships were afloat, they formed in a line and attacked the Roman vessels, which were soon sunk or destroyed.
It was deeds such as these which showed the power Hannibal still possessed, and kept alive the Roman dread of him; yet he himself knew that the triumph of Rome was only a work of time, and that the kingdom of Carthage was slipping from her.
In Sicily, which had once been hers, and even now contained many towns which were her allies, a strong Roman party had arisen. Syracuse in the south was besieged by Appius Claudius by land and by Marcellus by sea, and its defence is one of the most famous in history. The Greek engineer, Archimedes, invented all sorts of strange devices new to the ancient world. He made narrow slits in the walls, and behind them he placed archers who could shoot through with deadly aim, while they themselves were untouched. He taught the smiths in the city how to make grappling irons, which were shot forth from the ramparts and seized the prows of the ships. By pressing a lever the vessels were slowly raised till they stood nearly upright, when the grapplers were opened, and the ships fell back with a splash that generally upset the crew into the sea, or were filled with water and sunk to the bottom. Of course you must remember that these were not great vessels with four masts like our old East Indiamen, but were long, high boats, worked by banks of oars, the shortest row being, of course, the lowest, nearest the water.
After a while the Romans got so frightened, not knowing what Archimedes might do next, that they thought every end of loose rope that was lying about hid some machine for their destruction. For a long while the engineer kept the enemy at bay, but in the end the power of Rome conquered; the beautiful marble palaces were ruined, and the paintings and statues which had been the glory of Syracuse were carried to Rome.
Just at this time news from Spain became more and more gloomy for the Carthaginians. The young Scipio, who had saved his father's life nine years before at the battle of the Ticinus, was, at the age of twenty-six, made commander-in-chief in the peninsula. Though never a great soldier, Scipio was a good statesman, and had the gift of winning men to his side. Multitudes of natives flocked to his standard, and many important places fell into his hands; and in his hour of victory he was merciful, and caused his captives as little suffering as possible. In the words of the people themselves, 'he had conquered by kindness.'
Seeing that for the time, at any rate, all was lost in Spain, Hasdrubal set out with an army to join his brother Hannibal. In Auvergne, in the centre of Gaul, where he spent the winter, large numbers of Gallic tribes joined him, and in the spring he crossed the Alps by the same pass as Hannibal. But the difficulties of nine years earlier were now absent, for the mountaineers understood at last that no evil to them was intended, and let the Carthaginian army climb the defile without attempting to hurt them. Traces of Hannibal's roads remained everywhere, and thus the troops, consisting perhaps of sixty thousand men, marched easily along and descended into the plains of the Po. But it was all useless; before Hasdrubal could join Hannibal, who was still in Apulia, the consul Nero, encamped near by at the head of a considerable force, made prisoners some messengers sent by the general to his brother.
Instantly taking steps to have the roads to the north watched by armies, Nero set off at night with a picked detachment to meet the consul Livius on the coast of the Adriatic, south of the river Metaurus. Night and day his men marched, eating as they went food brought them by the peasants. In less than ten days they had gone two hundred miles, and entered the camp of Livius by night, so that the Carthaginian general might know nothing of their arrival. Next morning Nero insisted, against the opinion of the other generals, that battle should be given immediately, as he must return and meet Hannibal at once. In vain they protested that his troops were too tired to fight; he shut his ears, the signal was sounded, and the army drawn up.
The Carthaginians had already taken their places at the time that the Romans began to form, when Hasdrubal, riding down his lines to make sure that everything was done according to his orders, noticed that among the enemy's array clad in shining armour were a band with rusty shields, and a bevy of horses which looked lean and ill-groomed. Glancing from the horses to their riders, he saw that their skins were brown with the sun of the south and their faces weary. No more was needed to tell him that reinforcements had come, and that it would be madness to risk a fight. He could do nothing during the day, but as soon as the night came he silently broke up his camp and started for the river Metaurus, hoping to put it between him and the Romans; but it was too late.