The chief, with the greater part of his followers, now started and joined the army of Hannibal, which laid siege to the town of Turin, whose inhabitants were in alliance with Rome.

It was strongly fortified.

Hannibal erected an intrenchment at a distance of sixty yards from the wall, and under cover of this sank a well, and thence drove a wide gallery, the roof above being supported by props.
Divided in brigades, each working six hours, the troops laboured night and day, and in three days from its commencement the gallery was carried under the walls.

It was then driven right and left for thirty yards each way, and was filled with wood, combustibles, and explosives.

The workers then retired and the wood was fired, the props supporting the roof were soon burned away, the earth above fell in bringing down the walls, and a great breach was made, through which the besiegers, drawn up in readiness, rushed in and captured the town.
On the same day that Hannibal captured Turin, Scipio entered Piacenza.
After finding that Hannibal had escaped him on the Rhone, he had despatched the principal part of his army, under his brother Cneius, to Spain, their original destination, and with the rest sailed to Pisa and landed there.