‘A few bad eggs, that’s all,’ Macro replied tersely, not willing to endure too much disparagement of the brotherhood he felt honoured to be a part of. ‘The centurionate has a fine tradition. There are always exceptions.’

‘Then let’s hope we don’t find too many of them in the Twenty-Second. ’

‘I need some rest,’ Macro announced suddenly. He removed the armour from his kitbag and punched spare tunics, cloak and boots that remained into a rough pillow and laid his head down, turning his back to his friend. Cato smiled at his touchiness, and then eased himself down on to an elbow as the barge entered the canal that linked the lake to the Nile. On either side the banks were lined with reeds and clumps of palm trees, interspersed with small settlements of the ubiquitous mud-brick houses. Women were busy taking advantage of the cooler morning temperature to wash clothes in the placid waters while children played slightly further out, splashing each other, their shrill cries of joy carrying clearly across the canal. As the barges sailed past, they stopped their games to wave, and Cato smiled as he waved back.

He had grown so used to the demands and the strains of commanding soldiers that he had forgotten some of the simple pleasures of life, he realised sadly. His childhood seemed all too brief to him at that moment. He brushed the sentiment aside, cross with himself for allowing a moment’s idleness to sour his mood. He realised that there would be plenty of time for reflection in the next few days, and resolved that he would focus his thoughts on more useful, and pleasing, matters, such as the future he planned to have with Julia when he returned to Rome. And so he spent the rest of the morning watching the landscape of Egypt drift by as the convoy made its way upriver towards Diospolis Magna. Occasionally Macro and Hamedes stirred and exchanged a few words, before closing their eyes again. In the afternoon the convoy left the canal behind and entered the river. The sun beat down on the barges, and a steady hot breeze blew over the deck like the heat from a nearby furnace.

At dusk the barges put into the shore and grounded gently on a grassy stretch of the riverbank. Fires were lit and rations issued and the insects began to swarm round in whining clouds of dark specks against the light of the flames. Hamedes said he would bed down amongst the sailors, once he had drunk his fill of wine.

‘Suit yourself,’ Macro responded. ‘But I’m not going to lie out here and get bitten to death.’

Macro called over several of the legionaries and ordered them to erect the tent he and Cato would be sharing.

‘Quick as you can now, lads!’ Macro barked as he swatted the mosquitoes away. ‘Before these little bastards drain the blood out of me.’