After the assassination of Hasdrubal, in 220, the ablest leader was Hannibal, son of Hamilcar.

Although a young man of but twenty-eight, he had had a life of varied experience.

As a boy he had shown great courage and ability in camp under his father.

He was a fine athlete, well educated in the duties of a soldier, and could endure long privation of sleep and food.

For the last few years he had been in command of the cavalry, and had distinguished himself for personal bravery, as well as by his talents as a leader.
Hannibal resolved to begin the inevitable struggle with Rome at once.
He therefore laid siege to Saguntum, a Spanish town allied to Rome.