While Parmenion bellowed his orders Cato returned to the main wall to keep watch on the enemy. The Judaeans had fallen back some distance and their leaders were doing their best to rally them for another attempt. Already, some fires were being lit in the Judaean camp and torches were held high, illuminating men at work rolling bundles of sticks towards the fort. At the same time, soldiers with the conical helmets of Parthians were straining to wheel the surviving onager closer to the target. Cato glanced down and saw that Parmenion and his men had lowered ladders over the inner wall and were already busy lifting the bodies under their shoulders and dragging them up the mound of rubble, down the far side and on to a growing pile just in front of the breach. Some of the enemy were still living, and the auxiliaries despatched them with quick thrusts to the heart, or cut their throats, before dragging them away.

As darkness closed in over the desert, and the first stars twinkled coldly in the ink-black sky, the enemy came on again.There was a warning shout and a moment later the men who had been tasked with clearing the bodies away began to scramble back over the inner wall, pulling the ladders up behind them.

This time there was no arrogant roar of triumph, no rousing rattle of sword and spear against shield rim, just a silent approach of a dark mass of men, stealing towards the fort. They stopped just outside arrow range and waited as the onager was brought forward.A flickering torch filtered through the mass and then a fire flared up in a brazier, close by the onager, revealing the mass of men huddled round the huge weapon.

It did not take long to see what they were waiting for. A faggot was placed in the cup of the onager and quickly set on fire before the throwing arm was released with a metallic clank and an instant later the thud of the restraining bar. The faggot blazed up into the night sky, trailing flickering tongues of flame, sailing towards the fort until it struck the top of the rampart in a brilliant shower of sparks and bounced over the wall and crashed down into the street beside a stable block. A moment later the first fire arrow followed, then more, until a regular bombardment of fire arrows fell on the fort, interspersed with large flammable bundles of kindling wood, doused with oil, bursting on to the buildings inside the walls. The lack of rain had made the timbers of the fort dry and combustible and soon several fires had broken out beyond the breach.