The end of the first Punic War—as the war with Carthage was called—left Rome master of the large island of Sicily, the first province gained by that ambitious city outside of Italy. Advantage was also taken of some home troubles in Carthage to rob that city of the islands of Sardinia and Corsica,—a piece of open piracy which redoubled the hatred of the Carthaginians.
Yet Rome just now was not anxious for war with her southern rival. There was enough to do in the north, for another great invasion of Gauls was threatened. And about this time the Capitol was struck by lightning, a prodigy which plunged all Rome into terror. The books of the Sibyl were hastily consulted, and were reported to say, "When the lightning shall strike the Capitol and the Temple of Apollo, then must thou, O Roman, beware of the Gauls." Another prophecy said that the time would come "when the race of the Greeks and the race of the Gauls should occupy the Forum of Rome."
But Rome had its own way of dealing with prophecies and discounting the decrees of destiny. A man and woman alike of the Gaulish and of the Greek race were buried alive in the Forum Boarium, and in this cruel way the public fear was allayed. As for the invasion of the Gauls, Rome met and dealt with them in its usual fashion, defeating them in two battles, in the last of which the Gaulish army was annihilated. This ended this peril, and the dominion of Rome was extended northward to the Alps.
It was fortunate for the Romans that they had just at this time rid themselves of the Gauls, for they were soon to have a greater enemy to meet. In the first Punic War, Carthage had been destitute of a commander, and had only saved herself by borrowing one from Greece. In the second war she had a general of her own, one who has hardly had his equal before or since, the far-famed Hannibal, one of the few soldiers of supreme ability which the world has produced.
During the peace which followed the first Punic War Carthage sent an expedition to Spain, with the purpose of extending her dominions in that land. This was under the leadership of Hamilcar, a soldier of much ability. As he was about to set sail he offered a solemn sacrifice for the success of the enterprise. Having poured the libation on the victim, which was then duly offered on the altar, he requested all those present to step aside, and called up his son Hannibal, at that time a boy of but nine years of age. Hamilcar asked him if he would like to go to the war. With a child's eagerness the boy implored his father to take him. Then Hamilcar, taking the boy by the hand, led him up to the altar, and bade him lay his hand on the sacrifice, and swear "that he would never be the friend of the Romans." Hannibal took the oath, and he never forgot it. His whole mature life was spent in warfare with Rome.
From the city of New Carthage (or Carthagena), founded by Carthage in Spain, Hamilcar gradually won a wide dominion in that land. He was killed in battle after nine years of success, and was succeeded by Hasdrubal, another soldier of fine powers. On the death of Hasdrubal, Hannibal, then twenty-six years of age, was made commander-in-chief of the Carthaginian armies in Spain. Shortly afterwards his long struggle with Rome began.
Hannibal had laid siege to and captured the city of Saguntum. The people of Saguntum were allies of Rome. That city, being once more ready for war with its rival, sent ambassadors to Carthage to demand that Hannibal and his officers should be surrendered as Roman prisoners, for a breach of the treaty of peace. After a long debate, Fabius, the Roman envoy, gathered up his toga as if something was wrapped in it, and said, "Look; here are peace and war; take which you choose." "Give whichever you please," was the haughty Carthaginian reply. "Then we give you war," said Fabius, shaking out the folds of the toga. "With all our hearts we welcome it," cried the Carthaginians. The Romans left at once for Rome. Had they dreamed what a war it was they were inviting it is doubtful if they would have been so hasty in seeking it.
War with Rome was what Hannibal most desired. He was pledged to hostility with that faithless city, and had assailed Saguntum for the purpose of bringing it about. On learning that war was declared, he immediately prepared to invade Italy itself, leading his army across the great mountain barrier of the Alps. He had already sent messengers to the Gauls, to invite their aid. They were found to be friendly, and eager for his coming. They had little reason to love Rome.
A significant dream strengthened Hannibal's purpose. In his vision he seemed to see the supreme god of his fathers, who called him into the presence of all the gods of Carthage, seated in council on their thrones. They solemnly bade him to invade Italy, and one of the council went with him into that land as guide. As they passed onward the divine guide warned, "See that you look not behind you." But at length, heedless of the command, the dreamer turned and looked back. He saw behind him a monstrous form, covered thickly with serpents, while as it moved houses, orchards, and woods fell crashing to the earth. "What mighty thing is this?" he asked in wonder. "You see the desolation of Italy," replied the heavenly guide; "go on your way, straight forward, and cast no look behind." And thus, at the age of twenty-seven, Hannibal, at the command of his country's gods, went forward to the accomplishment of his early vow.
His route lay through northern Spain, where he conquered all before him. Then he marched through Gaul to the Rhone. This he crossed in the face of an army of hostile Gauls, who had gathered to oppose him. He had more difficulty with his elephants, of which he had thirty-seven. Rafts were built to convey these great beasts across the stream, but some of them, frightened, leaped overboard and drowned their drivers. They then swam across themselves, and all were safely landed.