They made their way back through the breach and went to find Centurion Parmenion. The veteran officer was working alongside his men pulling down the cohort's stables in an attempt to create a firebreak so that there was still a way through to the rest of the fort for the men defending the breach. A short distance away fire was consuming the granary and the roaring of the flames was punctuated by explosions of sparks from the building's timbers. Cato and Macro felt the heat hit them as they approached Parmenion and Macro had to squint as his eyes began to sting. Parmenion ordered his men to continue the work as he made his report to the prefect. His face was streaked with sweat and grime.

Macro pointed towards the stables. 'Where are the horses?'

'Scrofa took them to the far side of the fort, sir. He's tethering them along the east wall.'

'Fair enough,' Macro conceded. 'Good job. Better move the hostages there as well, in case the fire spreads to their cells. Now then, what's the news on the fire?'

'We're not going to be able to stop it spreading, sir. This firebreak's only going to divide it, keep an avenue open for you and the boys on the inner wall, if you get pushed back.'

'If we lose the wall, we lose the fort,' Macro responded bitterly.

'Maybe not,' said Cato. 'Not immediately at least. If we lose the wall then we have to use the fire as the next line of defence. It won't burn itself out for some hours.'

'And then?' Macro tipped his head to one side. 'Well? What then?'

It was a good question, Cato realised.The answer was straightforward. 'Then they march over the ashes and massacre us. Or we try to make a break for it. Leave a few men behind to make it seem as if the wall is still being defended, while the rest of us head out of the eastern gate and try to get as far from the fort as possible before daybreak. After that, head north to the Decapolis.'

Parmenion shook his head. 'They'd cut us to pieces if they caught us in the open. Those Parthians would pepper us with arrows so that we'd have to stop and cover ourselves with shields. They'd pin us down until the rest of Bannus' force turned up and finished off what was left. Battle of Carrhae, all over again.'

'All right, then,' Cato responded. 'We try something else. Something they can't possibly expect.' His eyes gleamed with excitement.

'Here we go again,' Macro muttered, turning to Parmenion. 'Brace yourself… All right, Cato, let's hear it.'

'If we stay on the wall, the flames will either get us or force us out of cover so that we'd have to face them on the ground outside the walls. If we retreat through the firebreak and close it off with burning debris, then we're just postponing being slaughtered a few hours.'

'Yes. So?'

'So we leave some men to man the walls, take the cohort out of the eastern gate, circle round and strike at their camp.' Cato looked from one man to the other. 'Well?'

Parmenion shook his head. 'That is the most hare-brained idea I've ever heard. No offence, or anything.'

'None taken. But what's the alternative?You're already agreed that we can't just wait and see what happens. Bannus won't be expecting us to take the initiative.'

'With good reason!' Parmenion snorted. 'He outnumbers us four or five to one.'

'Which is why he won't even think it is us.'

Parmenion frowned. 'What do you mean?'

'I think I know what the lad's thinking,' Macro interrupted. 'We hit them from the north, making as much noise about it as we can, and Bannus might just think that it's a relief force from Syria. Is that it, Cato?'

Cato nodded. 'They just might.'

Parmenion chuckled mirthlessly. 'And when morning comes and they see exactly how few we are, they just might take us for lunatics.'

Cato ignored him and kept his attention focused on his friend. 'We could carry it off, sir. If we strike from the darkness, the enemy will have no idea of the size of the force attacking them.They'll assume the worst and panic. It'll take a while before they even guess at the truth, and by then we could have scattered them, burned the surviving onager and sacked their camp. It'll take Bannus days to recover.'

Macro was not yet fully convinced. 'What if it goes wrong? If they don't run, but stand their ground, then we'll be given a good kicking.'

'No worse than if we just stayed put and waited for a good kicking here in the fort.'

'Good point,' Macro conceded. 'All right, we'll give it a try. After all, we've nothing to lose.'

'Except our sanity,' Parmenion muttered. 'And our lives.'

Macro glanced round at his officers, all those who could be spared for the operation. Parmenion and the others were manning the west wall and towers, doing their best to move around as much as possible to give the impression that there were far more men defending the breach than was the case. Macro was briefing the rest of the officers in the courtyard of the headquarters building. During the night Scrofa, Postumus and the men of the reserve squadron had been busy creating a firebreak along the route that bisected the fort, pulling down buildings on either side and carrying off the combustibles.The fire had raged across half of the fort and finally seemed to be shrinking in intensity now that it had exhausted its fuel. Unfortunately, not before it had gutted the prefect's quarters. All the fine murals and furniture that Scrofa had surrounded himself with had already been consumed by flames.

'The trick of it will be to get our men into position without alerting the pickets that Bannus has established round the fort.That's why we have had to wait for the fire to die down – can't risk them seeing us quit the gate. A party of scouts will go out ahead of the main force and clear the pickets on the north side so they can't give any warning to Bannus. We'll have to go carefully until we clear the belt of defences, but then I want the cavalry to run down the pickets closer to the enemy camp. Centurions Scrofa and Postumus will be in command of the cavalry squadrons. Once the pickets are dealt with they will move half a mile north of the enemy camp and form up on the flanks. Centurion Cato and I will follow with the infantry. When the line is complete we'll approach in silence for as long as possible and when I give the signal we sound every horn we have. Make sure the men give it full voice when they respond. I want Bannus to think every Roman soldier between here and Armenia is charging down on him. Tell your men to go in hard.They're to charge on until they hear the recall.At that point everyone is to retire through the breach, covered by the cavalry.' Macro opened his hands. 'That's it. Any questions?'

Centurion Postumus raised his arm.

'Yes?' Macro growled.

'Who dreamed up this nightmare?'

Macro glared at him for a moment before he turned back to address the rest of the cohort's officers. 'That's it then. I know it's a tough job, but we're in a bitch of a situation, gentlemen, and there's not much else we can do. If this works, then we'll have bought ourselves a few more days, and perhaps frightened off many of the men Bannus managed to recruit from the local villages. All right then. Get your kit and join your units. Dismissed!'

The officers tramped out of the courtyard and Cato edged closer to Macro and muttered, 'I think we need to keep an eye on Postumus, sir.'

'Fair enough, but he's in the same boat as us. He fights or dies. We can trust him that far at least.'

Cato glanced at Macro wearily. 'If you say so.'

Macro frowned. 'How long since you had any rest, Cato?'

'Not for two days, at least. Same as you.'

'I can take it, but you look done in.'

'I am,' Cato admitted. 'But there's nothing I can do about it until after the attack on their camp.'