'If you say so, sir.'

'I say so, but you don't think so, eh Piso?'

'To be honest, no, sir. Determination's one thing but fighting requires quite different qualities. I don't think he's got what it takes.' Piso paused. 'There's a rumour going round that he's a coward.'

'Yes, I've heard. But you know how it is with rumours – there's nothing in most of 'em. We have to give the lad a chance.'

Piso was struck by a sudden insight. 'Then you are expecting trouble, sir?'

'It's possible, you know what the Germans are like, any excuse for a fight. But I doubt it will amount to more than knocking a couple of heads together. Still, it'll give me a chance to see how Cato reacts.'

'If what I've heard's true, he'll run.'

'Care to make a wager on that?' Macro smiled. 'Five sestertii? I know you can afford it.'

'Yes, sir. But can you?'

'Five sestertii.' Macro ignored the gibe and spat on his hand. 'Five says that if there's trouble Cato doesn't run. Or are you too scared to take the bet?'

Piso delayed no more than a moment before slapping his centurion's palm. 'Five it is!'

The night had been cold and, as the soft light of dawn struggled through the morning mist, the fortress of the Second Legion was revealed in a sparkling white frost. The men of the Third cohort were forming into their centuries in a businesslike manner as the air was wreathed in the steam of their breath. Five hundred men, in full armour and heavy cloaks, were gathered in faint filtered shafts of light, rubbing hands and stamping feet in an effort to generate a small bit of warmth against the biting winter air. Jeers and good-humoured insults were exchanged with passing legionaries from other cohorts fortunate enough to be remaining in the fortress for the day. The officers stood apart from the loose columns of men and Cato had no trouble locating Macro's stocky form.

'This your protйgй, Macro?' said the man next to him.

Macro nodded.

'A little young for an optio, wouldn't you say?'

'We'll see,' Macro grunted, casting his eyes over the optio in his ill-fitting tunic and cloak. The centurion circled slowly, making a close examination of the young man's equipment, testing the buckles with a sharp tug, and tilting Cato's head back to ensure the helmet strap was fastened. 'You'll do. Right, while we're out of the base you stick by me and do whatever I say. No wandering off, no nothing without my say-so. Understand?'

'Yes, sir.'

'Now, join the front of the last century in line – that's the Sixth. Wait for me there.'

'Sir?'

'What is it?'

'How long are we going to stand here?' asked Cato, already shivering.

'You just can't wait, can you?' Macro shook his head. 'Not long now, boy, we're just waiting for the tribune.'

One of the other centurions spat on the frozen ground. 'Bet the bastard's still in bed.'

'Doubt it,' Macro replied. 'The legate's on his case. Seems he wants to test Vitellius. But this little trip's nothing more than an exercise in command. Even Vitellius would struggle to screw it up.'

'Macro, old son, never underestimate the incompetence of staff officers. They're born and bred for disaster…'

The exchange fell out of earshot as Cato made his way towards the standard rising over the Sixth Century. A few of the men eyed him curiously as he approached.

'You're Macro's optio?' the standard bearer asked.

'Yes.'

'He mentioned he had a new boy, but I didn't dream he was being so literal.'

Cato opened his mouth to reply before he got control of his feelings. Then he blushed and fumed silently.

'Just stick close to the centurion and me, lad, and you'll be all right.'

As Cato stood at the head of the century the other optios had been given the nod and were now moving down the ranks quietly ordering the men into column of fours, and dressing the lines so that in a short time the cohort was formed up, at ease, and ready to move off. Cato could not help but be aware of the growing sense of impatience as the men stood and waited. The sun had cleared the dawn mist lingering along the battlements and was washing the cohort in a weak orange glow.

And still they waited. For long enough that the cold began to take numbing advantage of their stillness.

At last the clatter of a walking horse sounded from the centre of the fortress and Cato turned to see a red-cloaked officer approaching, feathered plume bouncing from the crest of his helmet. At his approach, the group of centurions broke up and returned to their centuries. Vitellius trotted down the column and took up station at its head. A single word of command later and the lead century marched off, heading through the gate and on to the track beyond the walls. The succeeding centuries followed suit and, as the rear of the Fifth century moved forward, Macro counted off ten paces and then bellowed out the order to advance.

Cato's response, thanks to Bestia's harsh training regime, was automatic, and he instantly broke into the slow measured pace of the standard march two paces behind Macro and abreast the standard bearer. They passed through the gate, iron-shod boots echoing back off the stonework, and out into the half-tamed wilderness of the frontier province. The rising sun cast long shadows across the hoar frost to their left and numerous puffs of steamy breath swirled into the cold air. Underfoot, the ground was frozen hard where, weeks before, muddy channels marked the wagon ruts leading away from the fortress to the many frontier villages in the area. Despite the cold, Cato felt glad to be getting away from the Legion – a whole day without Bestia and Pulcher to occupy his mind.

The head of a column breasted a small rise in the land and, as the Sixth century followed down the reverse slope, Cato took a last look over his shoulder at the fortress stretching out across the landscape – a long stone wall with the red tiles of the headquarters building beyond. A settlement of bars, brothels and squalid hovels sprawled unevenly beneath the walls on the far side of the fortress. Looking ahead, a line of trees marked the end of the land cleared by the Second Legion and the beginning of one of the ancient forests that sprawled across Germany. Beyond the fringe of saplings struggling to recover some of the ground ravaged by the Legion's engineers, enormous pines and oaks reared up, dark and forbidding. Cato shivered, partly from the cold, and partly as he recalled the fate of the three legions General Varus had foolishly led into the depths of just such a forest nearly thirty years earlier. Over fifteen thousand men had been massacred in the gloomy twilight under the tangled boughs, their bodies left by the Germans to rot into the dirt.

As the column advanced down the track and the trees began to close in from the sides and overhead the men fell silent, some glancing anxiously into the depths beyond. Macro could well understand their feelings; there was something innately strange about this far-flung frontier of the Empire. The forests were unlike anything else in the known world, dark and impenetrable. Even the local tribes were afraid of them and told tales of how restless spirits of the dead were cursed to wander as pale wraiths through the shadows and green-filtered light. The track the cohort followed had been hacked through the forest by the Legion's engineers; the locals had preferred to trek round the forest before the Romans arrived. Even now some still refused to enter the woods. The engineers, it seemed, had also been afraid of the place, as the track made no attempt at a straight line and instead curled its way round the thick tree trunks, such had been their determination to get the job done quickly. A short while after the column had entered the forest no more than a score of men could be seen before or behind and Cato felt a trickle of sweat trace its way down his spine beneath his tunic.