The hillfort was the seventh settlement his legion had seized and sacked. This had taken only two days to achieve, yet there were certain aspects of the operation that Vespasian was certain could be improved. A handful of the enemy had managed to slip through his picket lines the first night the legion had camped in front of the hillfort. That was quite deplorable, and the optio in charge of the sentries had been broken back to the ranks. Next time, the legate firmly resolved, he would erect a palisade across any likely rat runs.

Then there had been only a limited supply of ammunition for his artillery engines to lay down a demoralising and destructive barrage upon the defenders. Although they had managed to damage the defences around the main gate, and take down a number of the enemy warriors, the catapults and bolt-throwers had failed to make a large enough breach. When the First Cohort had been thrown into the assault they met a far more determined resistance than they had anticipated. Next time the legion would wait until its artillery was able to lay down the kind of barrage that breaks the enemy's will to resist, Vespasian decided.

He felt guilty about rushing the assault, and was honest enough to admit the reason behind the order to attack was based on his ambition to have a high tally of victories to his name. Men had paid for his ambition with their blood. The legate quickly tried to repress the self-criticism by moving his thoughts on to a related problem. The Durotrigans were as fanatical in the final fight as they had been in the preparation of their defences. As a result there had been no survivors when the enraged legionaries had burst through the gateway and swarmed into the hillfort's interior. Every man, woman and child had been put to the sword.

That was a terrible waste, Vespasian reflected. Next time he would insist on taking as many of the enemy alive as possible. A good healthy Celt attracted a premium price in Rome at the moment with the latest fad for barbarian chic raging amongst those with more money than taste. Vespasian's share of the spoils would earn him a small fortune. Just as it would his men, if they could just manage to restrain their bloodlust long enough to realise that the pleasures of rape and pillage were transitory, whereas the profits from slave dealing could provide a nice supplement to their retirement funds. Orders must be given to the centurions to restrain their men when the legion took the next hillfort, Vespasian resolved. There would be no further waste of valuable lives, Roman or Briton.

Only the sheep, cattle and a few pigs had lived through the Roman assault. These livestock were being driven down the sides of the hill towards the camp. The animals would not survive very much longer than their erstwhile owners, and the delighted legionaries would be consuming fresh roast meat once again. Vespasian was pleased to have thus supplemented his supplies. However, the legion would soon be tackling a chain of much larger forts, and once again Vespasian would be reliant on a steady flow of supplies from the depot at Calleva.

Therein lay his most pressing difficulty. With Caratacus sending fast-moving columns to raid the legion's supply lines, Vespasian's men might be forced to live off the land. Worse, there would be no equipment to replace material lost in battle and losses due to wear and tear. It all depended on King Verica and the Atrebatans keeping to the terms of their alliance with Rome, and guaranteeing the safe passage of supply convoys through their territory. The formation of the two cohorts at Calleva might help ease the burden, and lift some of the weight of anxiety from Vespasian's shoulders. The legate was sure he could trust Centurion Macro with the task – and Centurion Cato, for that matter.

Vespasian smiled at the recollection of the moment he had informed the youngster of his promotion a few months earlier. Cato had been laying on a bed in the hospital at the Calleva depot. He had barely been able to blink back the tears of pride. Cato had great promise, and had justified the legate's estimation of his worth time and again. It would be interesting to see how the young man was coping with the responsibilities of his new rank, Vespasian mused. He was not quite in his twentieth year, and once Cato rejoined the Second Legion he faced one of the most daunting experiences a man could ever have in taking charge of the eighty legionaries of his first command.

Vespasian could clearly recall the painful self-consciousness with which he addressed the small patrol he had led when appointed a tribune nearly fourteen years ago. The grim veterans had listened to his introduction without comment but made no secret of their disdain for his lack of experience. At least Cato had that to bolster up his self-confidence. In the short time he had served with the Eagles Cato had already seen more combat than many legionaries did in a lifetime. And the youngster had been fortunate enough to be broken into his army life by Centurion Macro. Macro was as tough and reliable as Cato was intelligent and resourceful; the two complemented each other well.

The legate was sure that they would do a fine job of training Verica's men. Yet he longed to have them back with the Second Legion. When the two officers had fully recovered from their injuries, and the supply lines were safe, he would send for them straight away. A legion was only ever as good as the centurions who led it into battle. Vespasian wanted the Second to be good – to be a crack unit – and that meant making the most of men of Macro and Cato's calibre.

A trickle of sweat traced its way down his side under his linen tunic.

'Shit, it's hot!' he muttered.

One of the staff tribunes raised his head and looked towards the legate, but Vespasian dismissed him with a wave of a hand, as if swatting some annoying fly or gnat. 'It's nothing… Might have a swim later.'

Both men gazed longingly across the slope of the hill towards the river, a quarter of a mile away. The white forms of naked men lay stretched out on the grassy banks, while others waded and swam in the glistening water. Here and there the surface of the river burst into glittering spray where the more exuberant men were indulging in horseplay.

'I'd kill for a swim, sir,' the tribune said quietly as he wiped the sweat from his brow on the back of one hand.

'Some of them already have. Let them have their fun. But there's work to be done.' Vespasian nodded up at the remains of the hillfort. 'Keep 'em at it. I want nothing left by nightfall. Nothing that can be easily fortified.'

'Yes, sir.'

Even though it was late afternoon, the sun was blazing down on the legionaries toiling on the hill. The few native buildings that had escaped the incendiary bolts of the Second Legion's artillery battery had been set alight. Now the centurions were organising teams of men to tear up the palisade and hurl the timber down into the defence ditch. Soon the hillfort would be no more than a few black smouldering wooden frames and rings of ruined earthworks scarring the natural landscape. And after that, merely a fading memory in the minds of the legionaries who had destroyed the settlement and those natives who had ever passed this way.

Vespasian nodded his satisfaction at the progress in dismantling what fortifications remained, then turned away, striding back into the camp towards his headquarters. There were few men around, since most of those who were off duty were sheltering from the blazing sunshine in the shade of the leather tents that stretched out in neat rows on either side of the main thoroughfare. Even with both flaps open Vespasian knew that the interiors of the goatskin section tents would be stifling. That was why he had given permission for the cohorts that were stood down to swim in the river – they might as well be comfortable. Certainly they would be cleaner. To one who was raised in the Roman custom of frequent baths, the acrid stench of dirty sweating men was quite abhorrent. So the chance for the men to wash their clothes, and at the same time themselves, was to be seized with relish. Besides, the legion's chief surgeon was constantly urging his legate to force the men to adopt more hygienic practices. The men should wash as often as possible. Aesclepus claimed that it reduced the sick list. But then he would, being a follower of the more fancy eastern medical practices. Not that Vespasian lacked faith in Eastern medicine, it was just that he, like most Romans, believed that the East was a corrupt stew of soft, self-indulgent effeminacy.