Scipio, in consequence of this, sailed in B.C. 204 as proconsul, with a large army, from Lilybæum to Africa, and landed in the neighborhood of Utica. Here he made successful incursions into the neighboring country, and Hasdrubal, who attempted to prevent them, suffered a great defeat. But Scipio could not gain possession of Utica, which was of the greater importance to him and his fleet as the winter was approaching, and he was obliged to spend the season on a piece of land extending into the sea, which he fortified as well as he could. Toward the close of the winter the Carthaginians, united with Syphax, intended to make a general attack on Scipio's army and fleet, but being informed of their plans, he surprised the camps of Hasdrubal and Syphax in the night, and only a small number of the enemy escaped. Syphax withdrew into his own dominions, but was defeated by Massinissa and Lælius, and taken prisoner with his wife and one of his sons. Massinissa married Sophonisba, the wife of Syphax, who had formerly been engaged to him, but had been given to Syphax for political reasons. Scipio, fearing the influence she might have on Massinissa (for she was a Carthaginian), claimed her as a prisoner belonging to the Romans, and Massinissa poisoned her, to save her from the humiliation of captivity.
The fears and apprehensions of the Carthaginians now increased to such a degree that they thought it necessary to recall Hannibal from Italy, and at the same time they sued for peace. The terms which Scipio proposed would have concluded the war in a manner honorable to the Romans. The Carthaginians, however, whose only object was to gain time, made no objections to the conditions, but only concluded a truce of forty-five days, during which an embassy was to be sent to Rome. Before this truce was at an end, the Carthaginian populace plundered some Roman vessels with provisions, which were wrecked off Carthage, and even insulted the Roman envoys who came to demand reparation. Scipio did not resent this conduct and allowed the Carthaginian ambassadors, on their return from Rome, to pass on to Carthage unmolested. About this time (it was the autumn of the year B.C. 203) Hannibal arrived in Africa, and soon collected an army in numbers far exceeding that of Scipio. He first made a successful campaign against Massinissa. Scipio was at this time informed that the consul Tib. Claudius Nero would come with an army to co-operate with him against Hannibal.