‘We need to know the position of Vologases and his forces, so I want prisoners.’
Hanno nodded and went to issue his orders, leaving Valerius alone in the darkness, or so he thought.
‘How long do you think we’ll have to hold them?’
‘Vologases will march at first light, Serpentius, and I doubt if he’s more than two or three hours away. Even if he orders a forced march it’s unlikely the general will reach us by the eighth hour. Six hours, maybe more.’
‘Then let’s hope the King of Kings enjoys a long breakfast.’
Valerius imagined the might of the Parthian army marching against his puny, lightly armoured force. ‘Let’s hope he chokes on it.’
But first there was a valley to win.
Cloaked in their white shrouds, the twelve squadrons of the Third Thracian cavalry ala appeared as ephemeral as ghosts in the silver moonlight. They approached at a walk, spread in formation across the valley, with their prefect and General Corbulo’s cavalry commander on their right flank. Valerius knew the cloaks provided camouflage of a sort against the moonlit rocks and grass, but it couldn’t be long now. If the guards didn’t react, the attackers would break into the trot at two hundred paces and sweep through the camp peppering anything that moved with their arrows. When Hassan’s scouts had dealt with the sentries they would move into the Parthian horse lines hamstringing and cutting throats. Any Parthian who escaped from the camp would be cut down by Janos and his screen of archers.
Valerius reined in and watched the troopers ride by and he heard Hanno’s whispered curse as his gelding twitched and fidgeted demanding to be with its brethren. His nerves stretched like lyre strings as the silent minutes passed. Hassan must have done well, because there was no alarm cry or trumpet call as the first squadrons reached the trot and it wasn’t until they could feel the quake of the ground beneath them that the Parthians began to react. He heard shouted orders and panicked cries, a scream that was cut off the instant it began. Then the silver horde was on the little circle of Parthian tents.
It was done.
‘Congratulations, prefect.’ Hanno grinned at him. ‘Now the real work begins.’
‘This is the narrowest and most defensible point of the valley?’
‘It is, sir,’ Corbulo’s engineer, Petronius, an intense balding man, assured Valerius. ‘It narrows a little more to the north, but the valley walls are less steep. This is where we have the best chance of holding them.’
‘Very well.’ Valerius marched forty paces ahead and called his cavalry commanders to form a circle around him. They crouched together as troopers enclosed them in a ring of cloaks and Serpentius lit an oil lamp in the centre. With his dagger, Valerius sketched out a rough drawing in a sandy patch he’d chosen. ‘The narrowest part of the valley is here.’ He pointed to the position the engineer had indicated. ‘But we will make our defensive line at this point.’ He laid the dagger across the valley approximately where they now stood. If he expected a protest, or at least a question, he was disappointed, but he realized it was a measure of the respect he had won from these hard men in the weeks he’d ridden with them. He felt a pulse of pride that he immediately suppressed. It was all very well to issue orders, but if he made a miscalculation every one of these soldiers would be dead before tomorrow’s sunset.
‘Marcus? The Augusta Syriaca will form a covering line, here. First Ulpia and First Praetoria? I want staggered lines of camouflaged two-by-two pits dug across the neck of the valley behind the defence line. We don’t have stakes to make them proper horse killers, but…’ He produced a four-pronged iron spike from beneath his cloak. ‘Caltrops. Every man in the column carried four of these. That’s ten thousand of them; to be scattered between the pits. A killing field fifty paces deep. You’ll be working in the dark, but this has to be done properly. The pits and caltrops must be set to create diagonal lanes which will allow the withdrawal or reinforcement of all units. That’s the job of our engineer.’ Petronius nodded gravely. ‘He will supervise your work. Finally, prefect Hanno? The Third Thracians have done their work for the day and done it well. They will form a reserve ready to support Syriaca and provide patrols to locate and track the army of King Vologases. I need to know exactly where they are and in what numbers from first light at the latest. Do you have any questions?’
‘Why don’t we fight from behind the pit line from the start?’ the Syriaca’s commander asked softly. ‘By fighting in front of it we accept greater casualties and deny ourselves the ability to hurt the Parthians.’
Valerius nodded. ‘That’s true, Marcus.’ In the flickering yellow light of the oil lamp he looked each of them in the eye. ‘We fight in front of the pit line, because the pit line has been dug for the main force. We will fight and we will die in front of the pit line and only if we are on the point of annihilation will we withdraw behind it. That decision will be taken either by myself or, if I am dead, by prefect Hanno. Is that understood? This is our ground and we will hold them here or die in the attempt.’
XXXVI
The last scouts rode in at the gallop as the first light of dawn coated the eastern mountains pink and gold. The Cepha gap was a three-and-a-half-mile-long gorge that slashed through an otherwise unbroken range of saw- toothed peaks. The valley’s thousand-foot sheer flanks of fractured red sandstone were divided by a mile of dry grassland at its widest point, but in places it was much narrower. Valerius watched as a fast-moving squall of Parthian cavalry appeared from the dust behind his patrol, howling and yipping and loosing arrows from the saddle. With every eye on their prey it was a moment before the pursuers realized what they were seeing and drew their horses to a disbelieving halt in a shower of flying earth. From valley wall to valley wall a long line of Roman shields blocked their passage. An undernourished, patchy line, its ranks lacking the solidity that would be expected from the cream of Roman infantry, but the message carried by the big curved shields was clear: the legions were here and if King Vologases’ army wanted to reach Tigranocerta it must first destroy them.
Valerius had always known that the only way to hold the gap against a serious assault was on foot. That was why he had insisted the lightly armed cavalry exchange their regular round shields for proper legionary scuta begged and borrowed from the Tenth and the Fifteenth with Corbulo’s assistance. Now the emblems of the two elite eastern legions filled the valley with dismounted cavalry troopers behind them. At this point the gap measured a thousand paces wide as the engineer calculated it. Valerius had formed his men into five weakened cohorts in line abreast, each one hundred men wide and five deep, with a ten-pace division between each unit. To the riders watching from a few hundred paces away it must have appeared that an unbroken wall of shields had sprouted across the width of the valley. Yet it was a pitifully weak, poorly armed and unsupported line. He did not have enough men to both hold the ground and form a reserve. In time of danger each cohort must support its neighbour.
Two figures broke away from the group of riders and rode south. Couriers carrying the unwelcome news to Vologases, King of Kings, that a force of phantoms had materialized to bar his way. The remaining Parthian horse, perhaps a hundred strong, burst into movement, first circling, so that Valerius guessed they must be retreating to gather reinforcements, before advancing to ride across the face of the Roman line at a hundred paces distant. Unlike the earlier patrol Valerius had encountered this was composed entirely of archers; small men, unarmoured, on light horses and ideal for the hit and run tactics that Corbulo had warned him were the Parthian speciality. He waited for the inevitable flurry of arrows.
But the patrol’s commander must have sensed something in the line of shields that smelled of weakness. Without warning he wheeled his horse and led his men directly for the gap between the two left hand formations. If he could breach the Roman defences it would give him a deadly advantage when the main Parthian force arrived. Valerius knew that if the Parthians found their way to the auxiliary horse lines in a gully two hundred paces behind the lines, disadvantage could turn to disaster. A hail of arrows, fired at short range from the gallop, smacked into the shields of the front ranks of the two cohorts with the sound of a hundred branches snapping. Valerius heard the auxiliaries draw a collective breath, but thankfully there was no cry for the medical orderlies. Within two strides the Parthians reached the marker stones that identified optimum javelin range. The defending cohorts were a mix of bowmen and javelin throwers, and with a single shouted order a hundred javelins sailed out from the spearmen flanking the gap and converged on the galloping Parthians like a deadly summer shower. Men grunted, screamed and gasped as the light spears tore muscle and sinew, scraped bone and found heart or lung; a dozen horses crumpled in a single choreographed movement, impeding those not agile enough to avoid them. Two more strides and the survivors absorbed another perfectly timed cast. This time those left unscathed reeled away from the killing
