On the report of Scipio's landing, Massinissa immediately arrived in the camp of the general, whom not long before he had confronted as an enemy in Spain; but the landless prince brought in the first instance nothing beyond his personal ability to the aid of the Romans, and the Libyans, although heartily weary of levies and tribute, had acquired too bitter experience in similar cases to declare at once for the invaders. So Scipio began the campaign. So long as he was only opposed by the weaker Carthaginian army, he had the advantage, and was enabled after some successful cavalry skirmishes to proceed to the siege of Utica; but when Syphax arrived, according to report with 50,000 infantry and 10,000 cavalry, the siege had to be raised, and a fortified naval camp had to be constructed for the winter on a promontory, which easily admitted of entrenchment, between Utica and Carthage. Here the Roman general passed the winter of 550-1. From the disagreeable situation in which the spring found him he extricated himself by a fortunate -coup de main-. The Africans, lulled into security by proposals of peace suggested by Scipio with more artifice than honour, allowed themselves to be surprised on one and the same night in their two camps; the reed huts of the Numidians burst into flames, and, when the Carthaginians hastened to their help, their own camp shared the same fate; the fugitives were slain without resistance by the Roman divisions. This nocturnal surprise was more destructive than many a battle; nevertheless the Carthaginians did not suffer their courage to sink, and they rejected even the advice of the timid, or rather of the judicious, to recall Mago and Hannibal. Just at this time the expected Celtiberian and Macedonian auxiliaries arrived; it was resolved once more to try a pitched battle on the "Great Plains," five days' march from Utica. Scipio hastened to accept it; with little difficulty his veterans and volunteers dispersed the hastily- collected host of Carthaginians and Numidians, and the Celtiberians, who could not reckon on any mercy from Scipio, were cut down after obstinate resistance. After this double defeat the Africans could no longer keep the field. An attack on the Roman naval camp attempted by the Carthaginian fleet, while not unsuccessful, was far from decisive, and was greatly outweighed by the capture of Syphax, which Scipio's singular good fortune threw in his way, and by which Massinissa became to the Romans what Syphax had been at first to the Carthaginians. Negotiations for Peace Machinations of the Carthaginian Patriots