The Histories (1.18)

The result was that thenceforth the Carthaginians were somewhat less forward in making such attacks, and the Romans more cautious in foraging.

Finding that the Carthaginians would not come out to[*] meet them at close quarters any more, the Roman generals divided their forces: with one division they occupied the ground round the temple of Asclepius outside the town; with the other they encamped in the outskirts of the city on the side which looks towards Heracleia. The space between the camps on either side of the city they secured by two trenches, —the inner one to protect themselves against sallies from the city, the outer as a precaution against attacks from without, and to intercept those persons or supplies which always make their way surreptitiously into cities that are sustaining a siege. The spaces between the trenches uniting the camps they secured by pickets, taking care in their disposition to strengthen the several accessible points. As for food and other war material, the other allied cities all joined in collecting and bringing these to Herbesus for them: and thus they supplied themselves in abundance with necessaries, by continually getting provisions living and dead from this town, which was conveniently near. For about five months then they remained in the same position, without being able to obtain any decided advantage over each other beyond the casualties which occurred in the skirmishes. But the Carthaginians were beginning to be hard pressed by hunger, owing to the number of men shut up in the city, who amounted to no less than fifty thousand: and Hannibal, who had been appointed commander of the besieged forces, beginning by this time to be seriously alarmed at the state of things, kept perpetually sending messages to Carthage explaining their critical state, and begging for assistance. [*]Thereupon the Carthaginian government put on board ship the fresh troops and elephants which they had collected,

and despatched them to Sicily, with orders to join the other commander Hanno. [*] This officer collected all his war material and forces into Heracleia, and as a first step possessed himself by a stratagem of Herbesus, thus depriving the enemy of their provisions and supply of necessaries. The result of this was that the Romans found themselves in the position of besieged as much as in that of besiegers; for they were reduced by short supplies of food and scarcity of necessaries to such a condition that they more than once contemplated raising the siege. And they would have done so at last had not Hiero, by using every effort and contrivance imaginable, succeeded in keeping them supplied with what satisfied, to a tolerable extent, their most pressing wants. This was Hanno’s first step. His next was as follows.[*]