Cato nodded to the trumpeter and the Thracian lifted his curved instrument and blew a deep note out across the valley. As soon as Cato saw that some of the enemy had turned to look at the fort, he swung his leg over the wall and felt for the nearest rung. When he had a solid footing he began to descend. At the bottom he stepped back and raised his hands towards the parapet. Macro dropped the spare standard shaft down. A broad red pennant had been attached to it and Cato held it aloft and wafted it from side to side over his head. He would be spotted easily, and the red of the pennant and his military cloak would stand out against the tawny grass and heather of the slope. He climbed carefully down into the ditch, picking his way past the bodies lying there. Some still lived, groaning feebly and reaching out an imploring hand as he passed by. There was nothing he could do for them and he steeled himself to ignore their plight as he climbed the far side of the ditch and slowly descended the slope, waving his banner as the notes of the bucina continued to ring out. Around him the desultory hiss of the rain added to the gloom of the day.

‘That’s far enough, sir!’ Macro called out. ‘Stay in javelin range!’

Cato stopped. He continued to wave the pennant, in easy circles as it became soaked by the rain. Below him, only the nearest of the enemy were clearly visible, the rest becoming grey and indistinct in the mizzle that filled the valley. He watched as one of the screen of men guarding the camp turned and ran towards a large makeshift hut made from cut branches and heather that sat in the midst of those struggling to take shelter in the open. A moment later a handful of figures emerged from the hut and regarded the lone Roman officer a quarter of a mile away. After what seemed to be a swift exchange, Cato saw one of the men stride across to a horse line nearby and untether a white mount and vault on to its back. He turned the beast towards Cato and stirred it into a gentle canter. His army stood and some offered a cheer as he rode by and then through the line of sentries towards the fort. He slowed down as he approached Cato and walked his horse up to within ten paces before he reined in, casting a wary eye across the surrounding ground and the fort lined with soldiers.

Cato grounded his standard.

‘You wish to speak, Roman?’ Caratacus asked in his accented Latin.

‘I do.’ Cato gestured towards the nearest bodies lying on the slope. ‘Last night’s assault cost you dearly. I wish to discourage you from wasting any more of your men’s lives in such futile attacks.’