He had not discovered many trenching tools back in the sacked auxiliary fort. The Britons had been almost as thorough in their destruction of material as they had been of the garrison. A smouldering pyre of shields, slings, javelins and other equipment had been discovered inside the headquarters courtyard. Some of the tools at the periphery of the fire were salvageable, and a quick search through the timber barrack blocks had revealed some more picks and shovels, but Macro had come away with barely enough to equip half his century, let alone the rest of the cohort. Macro hoped that the cohort commander’s thirst for revenge had been quickly satisfied. The Third Century would not be able to defend the crossing alone should the enemy appear in force.

Besides, Macro thought angrily, Maximius had no bloody business chasing the small raiding party down in the first place. It was not in his orders. The protection of the ford should have been his priority. The cohort needed to be in position shortly after noon, yet three hours later still only Macro and his century were preparing to defend the crossing. The enemy might appear at any moment, and if they did then the crossing must fall into their hands.

Macro glanced back over his shoulder, scanning the southern bank for any sign of Maximius and the rest of the cohort.

‘Come on . . . come on, you bastard.’ Macro slapped his hand against his thigh. ‘Where the fuck are you?’

A faint shout from the northern bank drew his attention and Macro turned round. One of the men carrying a bundle of freshly cut stakes was waving to attract his attention.

‘What is it?’

‘There, sir. Up there!’ The man pointed behind him. On the far side of the river the track rose up from the edge of the ford and disappeared over the hill. Standing on the crest was a small figure, waving his javelin to and fro - the signal that the enemy had been sighted.

At once Macro brushed through the gap that had been left in the barricade and splashed down into the ford. He kept to the right, still unseeded with stakes to allow the defenders access to the crossing. The water closed around him, dragging at his legs as Macro thrust his way across to the far bank, throwing up sparkling cascades of spray as he emerged. A number of his men paused in their labours, distracted by the alarm.

‘Get back to work!’ Macro shouted. ‘You keep at it until I tell you otherwise!’

He didn’t pause but ran on, puffing up the slope to where his lookout was watching the landscape to the north. By the time that he had reached the man the centurion was exhausted and was fighting for breath as he followed the direction of the lookout’s javelin.

‘There, sir.’