'Press forwards, lads!' Cato shouted. 'Keep it close, and stick it to 'em!'
Beside him Macro smiled approvingly. The optio was finally acting like a soldier in battle. No longer coy about shouting out encouragement to men far older and more experienced than him, and cool-headed enough to know how the cohort must fight in order to survive.
The heavily armed Britons hurled themselves on the Roman shield wall with a fanatical savagery that horrified Cato. On either side of the box formation, the more lightly armed natives closed in on the flanks, screaming their battle cries and urged on by the Druids. The priests of the Dark Moon stood a little behind the fighting line, pouring curses on the invaders and calling upon the tribesmen to sweep this small knot of Romans from the British soil they defiled with their eagle standards. But religious fervour and blind courage provided no protection for their unarmoured breasts. They fell in large numbers before the lethal thrusts of swords designed to make short work of such foolish heroics.
At length the British heavy infantry became aware of the grievous losses that were piling up at the front of the armoured square, and still the Roman line remained unbroken and unwavering. The Durotriges began to shrink back from the terrible blades that stabbed out at them from between shields that all but hid their enemy from view.
'We've got 'em!' Macro bellowed. 'Forward! Keep forcing them back!'
The Durotriges, brave as they were, had never before encountered such a ruthless and efficient foe. It was like fighting a great iron machine, designed and built for war alone. It rolled forward without pity, impressing upon all who stood in its path that there could be only one outcome for those who dared to defy it.
A cry of anguish and fear grew in the throats of the Durotriges and flowed through their milling ranks as they realised the Romans were prevailing. Men were no longer willing to throw themselves uselessly at this moving square of impenetrable shields that was cleaving its way through ranks of swords and spears. As the Durotriges at the front recoiled, the men in the rear began to step back, at first just to keep their balance, and then their feet picked up speed, as if of their own will – carrying them away from the enemy. More men followed and scores, then hundreds of Britons peeled away from the dense mass of their comrades and fled down the track.
'Don't fucking stop!' Hortensius roared from the front rank of the First Century. 'Keep advancing. If we stop we're dead! Forward!'
A less experienced army would have drawn up right there, flushed with excitement at having bested their enemy, trembling with the thrill of having survived and awed by the carnage they had wrought. But the men of the legions continued their advance behind a solid shield wall, swords poised and ready to strike. Most had grown into manhood under the iron will of a military discipline that had stripped away the soft malleable material of humanity and fashioned them into deadly fighters, wholly subordinate to the will and word of command. After only the briefest pause to dress their lines, the men of the Fourth Cohort steadily advanced down the track leading through the vale.
The sun had settled beyond the horizon and the snow took on a bluish tinge as dusk closed in. On either side, the slopes were loosely covered by the broken ranks of the Durotriges, watching in silence as the square trudged past. Here and there their leaders, and the Druids, were busy reforming their men by force of will and cruelly wielded blows from the flat of their blades. War horns brayed out their rallying cries and the warriors gradually began to recover their wits.
'No slacking!' Macro ordered. 'Keep up the pace!' The first enemy units to re-form began to march after the cohort. The square formation was designed for protection, not speed, and the lightly armed units easily outpaced the Romans. As night fell, the men of the Fourth Cohort were uncomfortably aware of the dark mass of men flowing past them along the slopes in a bid to head off the legionaries once again. And this time, Cato reflected, the Durotriges would have prepared a more effective line of attack.
Night marches are difficult in the best of circumstances. The ground is largely invisible and lays plenty of traps for the unwary foot: a concealed rabbit hole or entrance to a sett can easily twist an ankle or break a bone. The unevenness of the ground quickly threatens to break up a formation and its officers have to move up and down the ranks tirelessly to ensure that a steady pace is maintained and that no gaps appear in the unit. Beyond these immediate difficulties lies the larger problem of route finding. With no sun to guide the men and, in overcast conditions, no stars, there is little more than faith to act upon in setting the line of march. For the men of the Fourth Cohort the problems of night marching were particularly acute. Snow had buried the track they had marched south on some days earlier and Hortensius could only follow the course of the vale, warily assessing each dip and rise in case the cohort was blundering off course. On either side, the sounds of the unseen Britons wore down the exhausted nerves of the men as they dragged their feet forwards.
Cato was more tired than he had ever been in his life. Every sinew in his body cried out for rest. His eyelids were almost too heavy to keep open and the cold was no longer the numbing distraction it had been earlier in the day. Now it fuelled the desire to slip into a deep, warm sleep. Insiduously, his mind entertained the idea and slowly drained the resolve that strove against the demand of every aching muscle for rest. He withdrew his attention from the world around him, away from watching the ranks of legionaries and the danger of the enemy lurking invisibly beyond. The monotonous pace of the advance aided the process and at length he succumbed to the desire to shut his eyes, just for a moment, just to take away the awful stinging sensation for a moment. He blinked them open to make sure of his bearings, and then they closed again, almost of their own will. Slowly his chin dipped towards his chest…
'On your fucking feet!'
Cato's eyes snapped open, his body filled with the chilling tremor that comes with being forcibly wrenched from sleep. Someone held his arm in a tight, painful grip.
'What?'
'You were falling asleep,' Macro whispered, not wanting his men to overhear. He dragged Cato forward. 'Nearly fell on top of me. Happens again and I'll cut your balls off. Now, stay awake.'
'Yes, sir.'
Cato shook his head, reached down for a handful of snow and wiped it across his face, welcoming the restorative effect of its icy sting. He fell into place alongside his centurion, feeling ashamed of his physical weakness. Even though he was at the end of his endurance he must not show it, not in front of the men. Never again, he promised himself. Cato forced himself to keep his attention focused on the men as the cohort continued to trudge forward. More regularly than before he moved up and down the dark lines of his men, snapping out orders to those who showed any sign of lagging.
Several hours into the night, Cato became aware that the vale was narrowing. The dark slopes on either side, only fractionally darker than the sky above, began to rise more steeply.
'What's that ahead?' Macro suddenly asked. 'There. Your eyes are better than mine. What do you reckon?'
Across the snow stretching out in front of the cohort an indistinct line extended across the vale. There was some movement there, and as Cato strained his eyes to try and make out more detail, a low whirring sound filled the freezing night air.
'Shields up!'
Cato's warning came moments before the slingshot came whipping out of the darkness and struck the cohort with a splintering clatter. The aim was understandably poor and much of the volley passed over the legionaries or struck the ground short of the target. Even so, a number of cries and a scream sounded above the din.
'Cohort, halt!' shouted Centurion Hortensius. The cohort drew up, each man shrinking into the shelter of his shield as the whirring started again. The next volley was as ragged as the first and the only casualties this time came from the huddle of prisoners under guard in the centre of the formation.