 The Carthaginians turned the town into a large granary for storing their grain and housing their animal herds, then set up a camp outside the town to billet the army, and finally surrounded the town and the camp with a trench and palisade.While the sick and wounded recovered in the camp, thousands of foragers fanned out throughout the plain to harvest crops while others pastured their cattle and horses on the mountainside.Two thirds of the army was employed in these operations while the rest guarded the camp.