Since leaving Carthage, Hamilcar had treated rebels he had captured well and offered them a choice of joining his army or free passage home. He made the same offer to the 4,000 captives from the recent battle. The rebel leaders perceived this generous treatment as the motivation behind Naravas's defection and feared the disintegration of their army; they were aware that such generous terms would not be extended to them personally. To remove the possibility of any goodwill between the sides, Spendius, encouraged by his fellow leader the Gaul Autaritus, had 700 Carthaginian prisoners, including Gisco, tortured to death: they had their hands cut off, were castrated, their legs broken and were thrown into a pit and buried alive. The mercenary leader and skilled polyglot orator Autaritus is cited by Polybius as a chief instigator of this massacre. Hamilcar, in turn, killed his prisoners. From this point, neither side showed any mercy, and the unusual ferocity of the fighting caused Polybius to term it the "Truceless War". Any further prisoners taken by the Carthaginians were trampled to death by elephants.