Down by the river they stopped for lunch in the shade of a grove of wild date palms. It was peaceful in the dappled sunlight, listening to the river slip by. Ballista had ordered that the scouts remain on the look-out above them on the plateau. After he had eaten the cold pheasant, bread and cheese that Calgacus had packed for him, he lay back and closed his eyes.
It was good to be out in the country, slightly stiff and tired after a morning in the saddle. It was good to be away from the endless interruptions and irritations of organizing the defence of Arete. Sunlight coming through the palm fronds made shifting patterns on his eyelids. The south wind was getting up; he could hear it moving through the stands of tamarisk. But even in this almost idyllic setting his mind would not rest. Castellum Arabum had a garrison of twenty. It was too few to mount a defence, and more than was needed for a look-out post. He had inherited this arrangement from the previous Dux Ripae. So far he had not found time to visit Castellum Arabum. Now, maybe it was too late to start altering things.
Ballista sat up and looked around at his men. They should start moving. Again it struck him how easy it was to slip into other people's ways of doing things. Twenty-three men and twenty-eight horses just to transport him to look at a small fort less than fifty miles away. Like the garrison of Castellum Arabum, the column was the wrong size. It was too small to fight off any determined Sassanid war party and too large to move quickly. The size of Ballista's entourage, somehow without any intention on his side, had expanded to fit Roman expectations. A Dux on the move needed scribes, messengers, guards. It was lucky he had not found himself saddled with a masseur, pastry cook and a hairy Greek philosopher as well. Ballista felt he should have ridden down to Castellum Arabum with just Maximus and Demetrius. Moving fast, they could have kept away from any trouble. It would be a foolish tent-dweller who decided to try to rob Maximus.
The tethered horses had eaten their hay and were either sleeping or desultorily searching the ground for anything edible. The sun was hot but in the shade of the stand of trees it was still cool. The men were resting or lying down talking quietly; there was all the time in the world. Ballista lay back down and shut his eyes. A sudden childish fantasy came over him. Why not just saddle Pale Horse, slip away and all alone ride west, never to return to the bustling irritations of Arete? But straight away he knew it was impossible. What about Maximus and Demetrius – and Calgacus? And then the big question: where would he go? To sit in his sun-drenched garden on the cliffs of Tauromenium or to drink by the fire in the high-roofed hall of his father?
At length it was Romulus who started them moving again, pointing out somewhat reproachfully that now they would not reach the ruined caravanserai that marked the half-way point by nightfall. Ballista said it did not matter. Maximus loudly and repeatedly said that it was a blessing in disguise: such places were undoubtedly crawling with snakes; the open air was far, far safer.
The afternoon followed the pattern of the morning, the river to the left, the wide emptiness of the sky and the land, the broad road along the plateau always unrolling to the south. As in the morning, sometimes they followed the road down into ravines, the horses' hooves sending showers of stones ahead, sometimes the road climbed straight out again, and sometimes it took its time, meandering down to the river and running along the floodplain, through the tamarisks and date palms, until a suitable opportunity appeared to regain the plateau.
The low winter sun was throwing long shadows to their left, making strange elongated beasts of horses and riders, when something happened. It started quietly. Maximus leant over, touched Ballista's knee and jerked his head back in the direction they had come. Ballista pulled his mount round to one side to see better. The cavalryman on rear point duty was in sight. He was a long way off but rapidly catching them. He was galloping, although not flat out. The south wind was making the dust his horse kicked up stream out behind them. The column came to a halt. Realizing he was observed, the cavalryman gathered the ends of his cloak in his right hand and waved them in the air, the usual signal for Enemy in Sight.
He was still some way off. They waited, all eyes not on the cavalryman but looking beyond him to see what might appear. The five equites singulares with the column fanned out into a line. Behind them the servants waited phlegmatically with the pack animals. The scribes and messengers talked rapidly among themselves. They all looked very frightened, except the scribe with the Spanish accent, who waited as impassively as any of the soldiers.
Nothing had shown itself by the time the cavalryman brought his horse to a halt before Ballista.
'Dominus, Sassanid light cavalry, bowmen – about fifty or sixty of them – about three miles away.'
'Which direction are they heading?'
'They were coming from the west, down from the hills to the river.'
'Did they see you?'
'Yes.'
'Did they chase you?'
'Not straight away. They waited until their lead group had reached the river, then they started to follow me, but at a walk.'
'Lead group?'
'Yes, Dominus. They were split into five groups stretched out over the three or four miles between the hills and the river.'
'Had they seen the rest of us?'
'I don't think so, Dominus.'
Allfather, but this looks bad, thought Ballista. Everyone was looking at him, waiting. He tried to block them out and think clearly. He looked around. Still nothing to be seen.
The man on point to the left, the east, was only a couple of hundred paces away; beyond him was the cliff down to the river. To the west the scout was about 400 paces out. Straight ahead to the south neither of the scouts could be seen, but the fresh wind was carrying a wide line of dust towards them from some miles away.
'Romulus, where exactly are we?' Ballista worked hard at making his voice sound calm, possibly even slightly bored.
'Just under twenty miles out of Arete, Dominus, just over twenty-five short of Castellum Arabum. The disused caravanserai is about three miles ahead.'
'Is there any shelter up in the hills to the west – a fort or settlement, occupied or not?'
'Only the village of Merrha to the north-west. It is occupied and walled, but the Sassanids are between us and it.' Romulus brightened. 'But we can go to the disused caravanserai. Its walls still stand, and we can reach it long before the Persians catch up with us.'
'Yes, it is tempting. But I think that it is possibly the last thing we should do.' Ballista circled his arms, calling in the men from left and right. 'Romulus, which of the equites singulares here has the best mount?'
Before the standard-bearer could answer, another cheekily cut in. 'No question about that, Dominus, me.' The man grinned. Demetrius whispered in Ballista's ear: 'Antigonus.'
'Right, Antigonus, I want you to go and bring in the two scouts from out in front. Meet us back at the last grove of date palms we passed through, down by the river. We will wait for you there. If we are not there, the three of you are to make your own way either to Arete or Castellum Arabum. Save yourselves as best you can. There is not a moment to lose. I will explain when you return. Take care.'
While Antigonus set off to the south at a gallop, the column retraced its steps to the north, also at a gallop. Once they were in the stand of trees, Ballista rattled out orders to put them in a new formation, his voice little above a fierce whisper. They were to form a wedge, an arrowhead. Ballista was to be the point, Maximus close to his right and half a length behind him, three equites singulares beyond and behind him. Romulus and the other four equites singulares were to comprise the left side of the formation. Demetrius and the Spanish scribe were to ride right behind Ballista, then the rest of the staff and the servants with the packhorses.