Alarmed by the recklessness displayed by the enemy, Hamilcar summoned Hanno to join him, being convinced that a consolidation of the two armies would give him the best chance of putting an end to the whole war. Such of the enemy as he took in the field he put to execution on the spot, while those who were made prisoners and brought to him he threw to the elephants to be trampled to death; for he now made up his mind that the only possibility of finishing the war was to entirely destroy the enemy. But just as the Carthaginians were beginning to entertain brighter hopes in regard to the war, a reverse as complete as it was unexpected brought their fortunes to the lowest ebb. For these two generals, when they had joined forces, quarrelled so bitterly with each other, that they not only omitted to take advantage of chances against the enemy, but by their mutual animosity gave the enemy many opportunities against themselves. Finding this to be the case, the Carthaginian government sent out instructions that one of the generals was to retire, the other to remain, and that the army itself was to decide which of them it should be. This was one cause of the reverse in the fortunes of Carthage at this time. Another, which was almost contemporaneous, was this. Their chief hope of furnishing the army with provisions and other necessaries rested upon the supplies that were being brought from a place to which they give the name of Emporiae: but as these supplies were on their way, they were overtaken by a storm at sea and entirely destroyed. This was all the more fatal because Sardinia was lost to them at the time, as we have seen, and that island had always been of the greatest service to them in difficulties of this sort. But the worst blow of all was the revolt of the cities of Hippo Zarytus and Utica, the only cities in all Libya that had been faithful to them, not only in the present war, but also at the time of the invasion of Agathocles, as well as that of the Romans. To both these latter they had offered a gallant resistance; and, in short, had never at any time adopted any policy hostile to Carthage. But now they were not satisfied with simply revolting to the Libyans, without any reason to allege for their conduct. With all the bitterness of turncoats, they suddenly paraded an ostentatious friendship and fidelity to them, and gave practical expression to implacable rage and hatred towards the Carthaginians. They killed every man of the force which had come from Carthage to their aid, as well as its commander, and threw the bodies from the wall. They surrendered their town to the Libyans, while they even refused the request of the Carthaginians to be allowed to bury the corpses of their unfortunate soldiers. Mathōs and Spendius were so elated by these events that they were emboldened to attempt Carthage itself. But Barcas had now got Hannibal as his coadjutor, who had been sent by the citizens to the army in the place of Hanno,—recalled in accordance with the sentence of the army, which the government had left to their discretion in reference to the disputes that arose between the two generals. Accompanied, therefore, by this Hannibal and by Narávas, Hamilcar scoured the country to intercept the supplies of Mathōs and Spendius, receiving his most efficient support in this, as in other things, from the Numidian Narávas.