Mesopotamia, North of the City of Carrhae, Spring AD 260 The emperor blinked as he stepped out into the bright sunshine. He seemed to wince as the court official called out his full title in Latin. 'Imperator Caesar Publius Licinius Valerianus Augustus, Pius Felix, Pater Patriae, Germanicus Maximus, Invictus, Restitutor Orbis'. At a sign, a horse was led forward. Its bridle shone with silver and gold, and its trappings were imperial purple. Needing no prompting, the elderly emperor walked to where the horse waited. As so many times before in the last few days, he got down on one knee, then the other. With a momentary pause, which might be excused in someone his age, he got down on all fours, his elbows in the dust. What seemed an age passed. The horse shifted and exhaled through its lips, the noise loud in the quiet camp. The sun was hot on the emperor's back.
The sound of another man walking towards the horse broke the near-silence. Out of the corner of his eye, the emperor could see two purple boots. Deliberately, the left one was raised and placed on his neck. As many times before, its owner let some of his weight come down through the boot before he spoke.
'This is the truth, not what the Romans depict in their sculptures and paintings,' he declared, then swung himself into the saddle, his weight hard upon his imperial mounting block. 'I am the Mazda-worshipping divine Shapur, King of Kings of Aryans and non-Aryans, of the race of the gods, son of the Mazda-worshipping divine Ardashir, King of Kings of the Aryans, of the race of the gods, grandson of the King Papak, of the house of Sasan; I am the lord of the Aryan nation. You mighty, look on my works and tremble.'
Ballista, the Roman general from beyond the borders in the far north, lay full length in the dust and watched. His reluctant proskynesis, or posture of adoration, was enforced by guards and the threat of a beating or worse and echoed by the rest of the Roman high command. Successianus the Praetorian Prefect, Cledonius the ab Admissionibus, Camillus the commander of Legio VI Gallicana – everyone of importance who had been with the field army – they were all there. The world had been turned upside down, the whole cosmos was shaken. For the first time, a Roman emperor had been captured by the barbarians. Ballista could feel the outrage and horror of his commilitiones as they were forced to witness the humiliation of Valerian – the pious, lucky, invincible emperor of the Romans, the restorer of the world – on his knees and dressed as a slave.
Four days earlier, Valerian had been captured. He had been betrayed by the companion he most trusted, the Comes Sacrarum Largitionum Macrianus the Lame. The Count of the Sacred Largess had arranged everything. His younger son, Quietus, had led the aged emperor and his army into a trap and then abandoned them.
Ballista, belly to the ground, furious in his abasement, thought of the repulsive youth Quietus, by now safely back in the Roman city of Samosata, and he repeated to himself a vow he had made twice before: One day, maybe not soon, but one day, I will kill you.
Shapur caracoled his mount, its hooves plunging and stamping dangerously close to the elderly man on the ground. Then the Sassanid King of Kings paced his horse along the line of his own courtiers, noblemen and priests and rode away, laughing.
Slowly, heavily, Valerian began to get to his feet. The butts of spears, freely wielded, encouraged the Comites Augusti to do the same.
As he hauled himself up, Ballista looked at the Sassanid courtiers. There, prominent among the priests, was the Persian youth whom Ballista had known as Bagoas when the boy had been his slave. How the wheel of fortune turns. Was the youth smiling at him behind that black beard?
The sight of Bagoas turned Ballista's thoughts to his familia. Had his ex-slaves Calgacus, Maximus and Demetrius made it to safety? Were they now also safe in Samosata? Or were they already on the road to Antioch? Antioch, where Ballista's two young sons and wife waited, all unaware. The pain of thinking of them was almost unbearable. Ballista spoke in his heart to the high god of his northern youth: Allfather, Death-blinder, Deep Hood, Fulfiller of Desire, Woden-born as I am, hear my prayer: I will give whatever is necessary, do whatever it takes, but let me return to them – return to them whatever the cost.