Then, having learned from the same Gauls, when they had mixed in conversation with the mountaineers, from whom they differed little in language and manners, that the pass was only beset during the day, and that at night each withdrew to his own dwelling, he advanced at the dawn to the heights, as if designing openly and by day to force his way through the defile.
The day then being passed in feigning a different attempt from that which was in preparation, when they had fortified the camp in the same place where they had halted, as soon as he perceived that the mountaineers had descended from the heights, and that the guards were withdrawn, having lighted for show a greater number of fires than was proportioned to the number that remained, and having left the baggage in the camp, with the cavalry and the principal part of the infantry, he himself with a party of light-armed, consisting of all the most courageous of his troops, rapidly cleared the defile, and took post on those very heights which the enemy had occupied.
33.

At dawn of light the next day the camp broke up, and the rest of the army began to move forward.

The mountaineers, on a signal being given, were now assembling from their forts to their usual station, when they suddenly behold part of the enemy overhanging them from above, in possession of their former position, and the others passing along the road.

Both these objects, presented at the same time to the eye and the mind, made them stand motionless for a little while; but when they afterwards saw the confusion in the pass, and that the marching body was thrown into disorder by the tumult which itself created, principally from the horses being terrified, thinking that whatever terror they added would suffice for the destruction of the enemy, they scramble along the dangerous rocks, as being accustomed alike to pathless and circuitous ways.

Then indeed the Carthaginians were opposed at once by the enemy and by the difficulties of the ground; and each striving to escape first from the danger, there was more fighting among themselves than with their opponents.