Pompey, at the age of twenty-three, without a commission from any superior authority, erected himself into a general; and having placed his tribunal in the most public part of the great city of Auximum, enlisted soldiers and appointed tribunes, centurions, and other officers, according to the established custom. He did the same in all the neighboring cities; for the partisans of Carbo retired and gave place to him; and the rest were glad to range themselves under his banners. So that in a little time he raised three complete legions, and furnished himself with provisions, beasts of burden, carriages; in short, with the whole apparatus of war.
In this form he moved towards Sylla, not by hasty marches, nor as if he wanted to conceal himself; for he stopped by the way to harass the enemy; and attempted to draw off from Carbo all the parts of Italy through which he passed. At last, three generals of the opposite party, Carinna, Caelius, and Brutus, came against him all at once, not in front, or in one body, but they hemmed him in with their three armies, in hopes to demolish him entirely.
Pompey, far from being terrified, assembled all his forces, and charged the army of Brutus at the head of his cavalry. The Gaulish horse on the enemy's side sustained the first shock; but Pompey attacked the foremost of them, who was a man of prodigious strength, and brought him down with a push of his spear. The rest immediately fled and threw the infantry into such disorder that the whole was soon put to flight. This produced so great a quarrel among the three generals, that they parted and took separate routes. In consequence of which, the cities, concluding that the fears of the enemy had made them part, adopted the interest of Pompey.
Not long after, Scipio the consul advanced to engage him. But before the infantry were near enough to discharge their lances, Scipio's soldiers saluted those of Pompey, and came over to them. Scipio, therefore, was forced to fly. At last, Carbo sent a large body of cavalry against Pompey, near the river Arsis. He gave them so warm a reception, that they were soon broken, and in the pursuit drove them upon impracticable ground; so that finding it impossible to escape, they surrendered themselves with their arms and horses.
Sylla had not yet been informed of these transactions; but upon the first news of Pompey's being engaged with so many adversaries, and such respectable generals, he dreaded the consequence, and marched with all expedition to his assistance. Pompey, having intelligence of his approach, ordered his officers to see that the troops were armed and drawn up in such a manner as to make the handsomest and most gallant appearance before the commander-in-chief. For he expected great honours from him, and he obtained greater. Sylla no sooner saw Pompey advancing to meet him, with an army in excellent condition, both as to age and size of the men, and the spirits which success had given them, than he alighted; and upon being saluted of course by Pompey as Imperator, he returned his salutation with the same title: though no one imagined that he would have honoured a young man not yet admitted into the senate with a title for which he was contending with the Scipios and the Marii. The rest of his behavior was as respectable as that in the first interview. He used to rise up and uncover his head, whenever Pompey came to him; which he was rarely observed to do for any other, though he had a number of persons of distinction about him.
While Pompey was in Sicily, he received a decree of the senate, and letters from Sylla, in which he was commanded to cross over to Africa and to carry on the war with the utmost vigor against Domitius, who had assembled a much more powerful army than that which Marius carried not long before from Africa to Italy, when he made himself master of Rome, and from a fugitive became a tyrant. Pompey soon finished his preparation for this expedition; and leaving the command in Sicily to Memmius, his sister's husband, he set sail with one hundred and twenty armed vessels, and eight hundred store-ships, laden with provisions, arms, money, and machines of war. Part of his fleet landed at Utica, and part at Carthage: immediately after which seven thousand of the enemy came over to him; and he had brought with him six legions complete.
On his arrival he met with a whimsical adventure. Some of his soldiers, it seems, found a treasure, and rest of the troops concluded that the place was full of money, which the Carthaginians had hid there in some time of public distress. Pompey, therefore could make no use of them for several days, as they were searching for treasures; and he had nothing to do but walk about and amuse himself with the sight of so many thousands digging and turning up the ground. At last, they gave up the point, and bade him lead them wherever be pleased, for they were sufficiently punished for their folly.
Domitius advanced to meet him, and put his troops in order of battle. There happened to be a channel between them, craggy and difficult to pass. Moreover, in the morning it began to rain, and the wind blew violently; insomuch that Domitius, not imagining there would be any action that day, ordered his army to retire. But Pompey looked upon this as his opportunity, and he passed the defile with the utmost expedition. The enemy stood upon their defence, but it was in a disorderly and tumultuous manner, and the resistance they made was neither general nor uniform. Besides the wind and rain beat in their faces. The storm incommoded the Romans, too, for they could not well distinguish each other. Nay, Pompey himself was in danger of being killed by a soldier, who asked him the pass-word, and did not receive a speedy answer. At length, however, he routed the enemy with great slaughter; not above three thousand of them escaping out of twenty thousand. The soldiers then saluted Pompey, Imperator, but he said he would not accept that title while the enemy's camp stood untouched; therefore, if they chose to confer such an honor upon him, they must first make themselves masters of the intrenchments.
At that instant they advanced with great fury against them. Pompey fought without his helmet, for fear of such an accident as he had just escaped. The camp was taken, and Domitius slain; in consequence of which most of the cities immediately submitted, and rest were taken by assault. He took Iarbas, one of the confederates of Domitius, prisoner, and bestowed his crown on Hiempsal. Advancing with the same tide of fortune, and while his army had all the spirits inspired by success, he entered Numidia, in which he continued his march for several days, and subdued all that came in his way. Thus he revived the terror of the Roman name, which the barbarians had begun to disregard. Nay, he chose not to leave the savage beasts in the deserts without giving them a specimen of the Roman valor and success. Accordingly he spent a few days in hunting lions and elephants. The whole time he passed in Africa, they tell us, was not above forty days; in which he defeated the enemy, reduced the whole country, and brought the affairs of its kings under proper regulations, though he was only in his twenty-fourth year.
Upon his return to Utica, he received letters from Sylla, in which he was ordered to send home the rest of his army, and to wait there with one legion only for a successor. This gave him a great deal of uneasiness, which he kept to himself, but the army expressed their indignation aloud; insomuch that when he entreated them to return to Italy, they launched out into abusive terms against Sylla, and declared they would never abandon Pompey, or suffer him to trust a tyrant. At first, he endeavored to pacify them with mild representations; and when he found those had no effect, he descended from the tribunal, and retired to his tent in tears. However, they went and took him thence, and paced him again upon the tribunal, where they spent a great part of the day; they insisting that he should stay and keep the command, and he in persuading them to obey Sylla's orders, and to form no new faction. At last, seeing no end of their clamors and importunity, he assured them, with an oath, that he would kill himself, if they attempted to force him. And even this hardly brought them to desist.