Thus, as we have already seen,[510] Titus pitched his camp before 11 the walls of Jerusalem and proceeded to display his legions in battle order. The Jews formed up at the foot of their own walls, ready, if successful, to venture further, but assured of their retreat in case of reverse. A body of cavalry and some light-armed foot were sent forward, and fought an indecisive engagement, from which the enemy eventually retired. During the next few days a series of skirmishes took place in front of the gates, and at last continual losses drove the Jews behind their walls. The Romans then determined to take it by storm. It seemed undignified to sit and wait for the enemy to starve, and the men all clamoured for the risks, some being really brave, while many others were wild and greedy for plunder. Titus himself had the vision of Rome with all her wealth and pleasures before his eyes, and felt that their enjoyment was postponed unless Jerusalem fell at once. The city, however, stands high and is fortified with works strong enough to protect a city standing on the plain. Two enormous hills[511] were surrounded by walls ingeniously built so as to project or slope inwards and thus leave the flanks of an attacking party exposed to fire. The rocks were jagged at the top. The towers, where the rising ground helped, were sixty feet high, and in the hollows as much as a hundred and twenty. They are a wonderful sight and seem from a distance to be all of equal height. Within this runs another line of fortification surrounding the palace, and on a conspicuous height stands the Antonia, a castle named by Herod in honour of Mark Antony.