When Hannibal rode on to the ground, surrounded by his principal officers, a shout of welcome rose from the army; and he proceeded to make a close inspection of the whole force. The officers then placed themselves at the head of their respective commands, the trumpets gave the signal, and the army set out on a march, as to whose direction and distance few present had any idea, and from which few, indeed, were ever destined to return.

There was no longer any occasion for secrecy as to the object of the expedition. The generals repeated it to their immediate staffs, these informed the other officers, and the news speedily spread through the army that they were marching against Saguntum. The importance of the news was felt by all. Saguntum was the near ally of Rome, and an attack upon that city could but mean that Carthage was entering upon another struggle with her great rival.

Saguntum lay about 140 miles north of Carthagena, and the army had to cross the range of mountains now known as the Sierra Morena, which run across the peninsula from Cape St. Vincent on the west to Cape St. Martin on the east. The march of so large an army, impeded as it was by a huge train of wagons with stores and the machines necessary for a siege, was toilsome and arduous in the extreme. But all worked with the greatest enthusiasm and diligence; roads were made with immense labour through forests, across ravines, and over mountain streams.