two of the leading Sassanids. As he shot between them the northerner directed a vicious cut at the head of the Persian on his right. The man blocked the blow. The shock jarred Ballista's arm.
There was virtually no gap between the next two Sassanids in front of the northerner. He jabbed his heels into Pale Horse and set him at them. The gelding's left shoulder crashed into the withers of the Persian horse to the left. It staggered back. A gap opened, but the impact had robbed Pale Horse of all momentum. Ballista kicked furiously. His mount responded, leaping forward. To his right he saw Maximus's blade topple first one then another Persian out of the saddle.
They were nearly through; just one line of Persians still ahead. Maximus was no longer right on his shoulder. Ballista drew his spatha back over his left shoulder and aimed a mighty downward cut at the Sassanid to his right. Somehow the man blocked it with his shield. Ballista wrenched his blade free of the splintered wood and cut horizontally over Pale Horse's ears at the man on his left. This time he felt the blade bite home. There were no more enemy in front.
The force of the blow smashed Ballista's head forward. His nose crunched into Pale Horse's neck and blood poured from it. It was broken. He could feel more blood running down the back of his neck. Instinctively he twisted round to the right, bringing his spatha up in an attempt to parry the next blow he knew would come, the blow meant to finish him.
There was the Sassanid, sword arm raised. The bastard smiled – and looked down, clutching his side, staring stupidly at the sword wound.
Ballista waved his thanks to the Spaniard and kicked on. The scribe grinned back and flourished his sword – then the look on his face changed to shock. His horse disappeared from beneath him. He seemed to hang for a moment, then he went down into the tumbling, sliding mass of his own horse and under the hooves of the following Roman and Sassanid mounts alike.
There would be time for pity or guilt later. Ballista could not have stopped Pale Horse in any case. They rushed on, up the wadi, up its steep bank. As they emerged on to the plateau it grew much lighter. Up here the sun had not quite set. Without looking to see who was still with him, Ballista set the pace at a hell-for-leather gallop. He angled away from the road towards the north-west. It was vital that they pass inland of the next ravine.
The northerner looked over his left shoulder. There was the next group of Persians, about twenty of them. They had turned and were now riding hard to cut Ballista and his men off. Their long shadows flickered over the plain. The other groups of Persians had also turned, but they could not possibly reach the ravine in time; for now they were of no concern.
Ballista heard Maximus shout something. He ignored him; he needed to think. Despite the growing ache in his head, his mind was clear. He was calculating the distances and the angles. He saw it all as if watching from a great height: the fixed point of the head of the ravine, the two moving bodies of horsemen converging on it. He leant forward in the saddle, pushing Pale Horse for just that last bit of effort, that last pace or two of extra speed.
Ballista and his men made it with a little bit to spare. They skidded round the mouth of the ravine with the Persians still fifty paces away. They pushed on, but some of the urgency seemed to have gone out of the pursuit. Soon they were a couple of hundred paces ahead. Ballista slackened the pace. It was now twilight. There was something that had to be done. He did not want to do it, but it could not be deferred. He looked round to see who had fallen.
Maximus was there. Demetrius was there. Romulus was there, and four equites singulares, one scribe, both messengers and three servants, the latter commendably still leading their packhorses. The butcher's bill could have been higher – three soldiers, one Spanish scribe and two servants. It could yet mount higher, much higher.
The moon was up, but the strong south wind was pushing tattered clouds across its face.
'Are you all right? You look terrible,' Maximus called.
'Never better.' Ballista replied sourly. 'Like a slave at Saturnalia.'
'Do you think they will give up?' Demetrius asked, trying but failing to keep the desperate wishful thinking out of his voice.
'No.' It was Maximus who firmly crushed his hopes. 'They are settling in for the long haul. They intend to run us down during the night.'
As the Hibernian spoke, a series of twinkling lights appeared strung out between the river and the hills.
'Do we still have a lantern?' Having been assured by one of the servants that they still had two, Ballista ordered one of them to be lit. The order was obeyed amid unvoiced horror. Bright golden light spilled out around them.
'I do not want to appear stupid, but does not your lamp make it just a bit easier for your Persians to follow us?' Maximus asked.
'Oh yes, and that is just what I want.' Ballista asked a servant to tie the lantern securely to the saddle of one of the packhorses. They rode on in silence for a time, travelling no faster than an easy canter. The clouds were building up, the moon ever more obscured. Now it was pitch dark outside the pool of lantern light.
'Romulus, you know where the village of Merrha lies?'
'Yes, Dominus. Off in the hills to the north-west, not far now, four miles maybe.'
'I want you to lead the packhorse with the lantern in that direction. When you think that you have gone far enough or the Sassanids are getting too close, set the packhorse running free and ride for Arete.'
The standard-bearer smiled enigmatically. 'We will do what is ordered, and at every command we will be ready.' He spoke ruefully. He took the horse's leading rein and set off diagonally across the dark plain.
'Now we ride flat out again.'
In complete silence the small group rode hard. Off to their left, the light of Romulus's lantern bobbed across the plain towards the just distinguishable darker mass of the hills. Beaded across the wide plain were the lights of the Sassanids. Soon they altered course and surged after the lone Roman lantern. Ballista and his remaining twelve men rode north into the darkness to safety.
Not one was looking back when the line of Sassanid lights converged on the solitary lantern making vainly for the hills.
They were found by the patrol just after dawn; Turpio was working Cohors XX hard these days: the first patrols set out early, always in the dark. When Ballista and his party were found they were still a couple of miles from town, and in a bad way. Horses and men were completely exhausted. The flanks of the horses were covered in a white foam of sweat, their nostrils wide, mouths hanging open. The men were ashen-faced, almost insensible with fatigue. Apart from a servant more dead than alive who was slung over a packhorse, they were walking, stumbling along by their mounts. The Dux Ripae looked terrible, his face masked in dried blood, staggering, hanging on to the near-side pommel of his horse's saddle.
Before they reached Arete the Dux called a halt. He washed as much as he could of the blood from his face. He put on a hooded cloak borrowed from one of the troopers. He climbed back on to his horse and pulled the cloak up to hide his injuries. He rode into town with a straight back.
After the battered cavalcade had passed through the Palmyrene Gate the telones looked at the boukolos with an air of smug vindication.
'Calpurnia mutters… There is truth in poetry, boy – looks like that old centurion knew a thing or two: the ides of March did not do our barbarian Dux any good.'
'And knowing poetry didn't do your fucking centurion much good either; he still had his bollocks cut off,' replied the boukolos. 'Now this is what I call an omen: first time our commander meets the Persians they nearly kill him. Bloody bad omen that.'
From this first conversation discussions of the events at Castellum Arabum spread out across the town of Arete.
An hour or so after their return, Ballista, Maximus and Demetrius were lying in the tepidarium of the private baths attached to the palace of the DuxRipae. The doctor had come and gone. He had put a couple of stitches in a gash on Maximus's thigh and five or six in the scalp wound on the back of Ballista's head. Demetrius had come through untouched.
They were lying in silence, dog-tired, aching. Ballista's head throbbed.
