XII. Domitius had posted himself to oppose Pompeius, with a ravine in his front which was difficult to pass and rough; but a violent rain accompanied with wind commenced in the morning and continued, so that Domitius giving up his intention of fighting on that day ordered a retreat. Pompeius taking advantage of this opportunity advanced rapidly and began to cross the ravine. But the soldiers of Domitius were in disorder and confusion, and what resistance they offered was neither made by the whole body nor yet in any regular manner: the wind also veered round and blew the storm right in their faces. However the storm confused the Romans also, for they did not see one another clearly, and Pompeius himself had a narrow escape with his life, not being recognised by a soldier to whom he was somewhat slow in giving the word on being asked for it. Having repulsed the enemy with great slaughter (for it is said that out of twenty thousand only three thousand escaped) they saluted Pompeius with the title of Imperator. But Pompeius said that he would not accept the honour, so long as the enemy’s encampment was standing, and if they thought him worthy of this title they must first destroy the camp, upon which they forthwith rushed against the rampart, and Pompeius fought without a helmet for fear of what just had happened. The camp was taken and Domitius fell. Some of the cities immediately submitted, and others were taken by storm. Pompeius also made a prisoner of Iarbas,[211] one of the kings, who had sided with Domitius, and he gave his kingdom to Hiempsal. Availing himself of his success and the strength of his army he invaded Numidia. After advancing many days’ march and subduing all whom he met with, and firmly establishing the dread of the Romans among the barbarians which had now somewhat subsided, he said that he ought not to leave even the wild beasts of Libya, without letting them have some experience of the strength and courage of the Romans. Accordingly he spent a few days in hunting lions and elephants;[212] and in forty days in all, as it is said, he defeated his enemies, subdued Libya, and settled all the affairs of the kings, being then in his four and twentieth year.