‘Stand up!’ Tullius roared out, and the other officers echoed the call along the rampart. The legionaries rose to their feet, moved up to the palisade and raised their blades, ready to meet the attack. The last few slingshot zipped through the air, bringing down one more Roman before the natives were forced to stop their bombardment for fear of hitting their own men. There was almost no interlude between the last of the shot flying overhead and the first clashes of weapons along the rampart. The makeshift ladders were thrust up against the palisade and the Celt warriors swarmed up and attempted to swing themselves over the rampart and engulf the defenders. From the flanking redoubts Cordus and Macro urged their men on, hurling and throwing whatever missiles they had left into the flanks of the attacking force.

Cato tightened his grip on his sword and shield, and pressed forward. The roughly hewn top of a ladder slapped up against the palisade immediately to his left and an instant later a burly warrior clambered up, reached an arm over the palisade and began to pull himself up. Cato thrust the point of his sword at the side of the man’s head and felt the thud and crunch of bone jar down his arm. The man dropped away and Cato turned to the nearest legionary.

‘Here! Help me!’

Pushing the guard of his sword hand against the top of the ladder Cato tried to heave it back on top of the attackers. But there was already a man on the lowest rung, and the Briton swung himself up as fast as he could, meeting Cato’s terrified gaze with a mad glint of triumph in his eyes.

‘No you fucking don’t, mate!’ The legionary cut down with ferocious strength, his sword cleaving the man’s skull and splattering himself and his centurion with blood and brains. As the man fell Cato thrust the ladder away from the palisade and nodded his thanks to the legionary.

Cato glanced round and saw that so far not one of the enemy had secured a foothold on the rampart. But even as he watched, a short distance to his right a section of the palisade was wrenched away from the rampart, showering the attackers with rubble as the loosened earth behind it collapsed. With a cry, the legionary who had been fighting immediately above them, tumbled forward into the mass of warriors below and was butchered as he sprawled on the slope.

‘Watch it!’ Cato shouted to his men.’They’re pulling up the palisade!’