The soldiers snatched up their shields and clambered over the side and began to struggle up the bank, just as Junius and Macro reached the top and half ran, half slid down towards the water. Cato was a short distance behind them when a camel lurched out in front of him. He dodged round, ducked beneath the long curve of its neck and ran on. The rider shouted in alarm and drew his sword with a dry rasp. But he had reacted too late and Cato was already stumbling down towards the boat, the legionaries falling back with him as they presented their shields to the other riders who had appeared on top of the bank. One of them leaped down from his saddle, landed heavily and then rushed down the slope, crashing into the shield of a legionary. He gave a sharp grunt as the Roman thrust his sword into the rider’s gut and then wrenched it free. Beyond, Macro heaved Junius aboard and then rolled over the side on to the deck. Cato clambered aboard and bellowed to the legionaries to follow him. The barge captain and his men were already easing the barge away from the riverbank with one of the long oars. The legionaries turned and splashed into the shallows and scrambled aboard.

There was a crack on the deck close by Cato and he instinctively ducked before he had the presence of mind to shout out a warning. ‘Watch out!’

Another arrow whirred through the air close overhead. The barge lurched free of the silty river bed and was caught by the flow of the water and started to drift downriver. The crew hurriedly placed the oars into the rowlocks and strained to get the craft away from the bank. An arrow splashed into the water close by, then another struck the deck. Moments later there was a soft whack and one of the legionaries gave a cry as he collapsed on to the deck, while his shield landed awkwardly and tumbled over the side. Cato saw an arrow shaft projecting from just below the man’s neck. The soldier reached for it with both hands, making a ghastly gurgling noise. His boot scraped across the deck for a moment before his struggles eased and stopped and he lay in a slowly expanding pool of his own blood. More arrows splashed into the water behind them before the enemy realised their target was out of range and ceased shooting.

Macro let out a sigh of relief, then turned on Junius. ‘Next time the senior tribune gives you an order, you obey it to the letter. Do you understand, you fuckwit?’

‘Y—yes. I’ll do as you say.’

‘Good.’ Macro turned to Cato. ‘You all right?’

‘I’m fine.’ Cato turned to look back to the western bank. ‘No doubt about it now. Looks like the legate has been saved a job. The Nubians have decided to bring the war to us.’

CHAPTER TWENTY-FOUR