The men instantly lifted themselves and stared along the track, some shielding their eyes to cut the glare and see Bushir more clearly, no more than two miles away. As they drew nearer and the heat haze dissipated Macro could make out more detail. The fort was constructed from stone, with four massive towers, one at each corner. In between stretched long curtain walls with a smaller tower either side of the main gate on the wall facing the track. A short distance from the fort was a reservoir, built into a dip in the ground where two shallow gullies converged. Macro could just make out the tiny dark shapes of a group of men watching their approach from one of the towers.

Behind them, a faint cry rose up from the brigands as they too caught sight of the fort, and forced their mounts to make one last effort to catch the Romans before they reached safety.

The decurion responded immediately. ‘Squadron . . . forward!’

He kicked his heels in and his tired mount lurched into a canter, and his men followed suit, pounding along the track as their pursuers started to close the distance, desperate to make the kill. Macro did his best to keep up with the auxiliaries, but he was an infantryman and not used to getting the best out of his mount, and so he gradually slipped behind. As the auxiliaries approached the fort the gate opened and fully armed men piled out and quick-marched towards their comrades, ready to provide a defensive screen against the pursuers. Some officer in the fort had acted very quickly and Macro made a mental note to thank the man, if he got away from the brigands pursuing him.

The first of the auxiliaries passed through the gap in the infantry line and then reined in quickly and dismounted from their exhausted horses. Macro glanced back and saw that Bannus’ men were much closer now, foam flicking back from the muzzles of their driven mounts.

‘Come on, you bastard!’ Macro growled at the two ears rising stiffly at the end of his horse’s neck. ‘Run! Or we’re both food for the jackals.’