As he assumed his position in the middle of the front rank Cato took a firm grasp on the handle of the shield Figulus held ready for him, and drew his sword.

At the far end of the cohort, Maximius cupped a hand to his mouth and roared out an order, only just audible above the din of the charging tribesmen. ‘Front rank . . . ready javelins!’

The front rank rippled forward as the men advanced two paces and halted.

‘Prepare!’

The men twisted at the waist and reached back with their right arms, angling the shafts of their javelins up towards the sky. Then they tensed, waiting for the final order. Maximius faced the enemy, gauging the gap between the Britons and his cohort. He let them come on, sprinting across the rich green tufts of grass. When they were no more than thirty paces away he swung back to his men.

‘Release!’

There was a deep grunt from the front rank as their arms shot the javelins forward and a slender veil of dark shafts curved up, slowing as they reached the peak of their trajectory, then dipped, picking up speed, and clattered and thudded into the ranks of the enemy. The range was short, and scores of the Britons were struck down - pierced through by the heavy iron heads of the Roman javelins.

‘Rear ranks, down javelins and move forward!’ Maximius yelled, and the rest of the cohort stepped into position behind the men of the front rank, who quickly drew their swords and braced themselves for the impact of the charge. An instant later the Britons hurled themselves upon the Roman line, hacking and thrusting at the wide curved shields with their long swords and spears. Some, more powerfully built than their comrades, burst through the gaps between the shields, and straight on to the points of the swords of the men in the rank behind. Cato, tall and thin, was thrust back by a body piling into the surface of his shield. He gave ground, but as the enemy warrior plunged into the Sixth Century, he was cut down by the frenzied thrusts of the man to the left of Cato. The centurion briefly nodded his thanks to Velius and thrust his way back into line.

Once the immediate impact of the charge had been absorbed the Roman line quickly re-formed and the Britons were whittled down as they vented their rage and frustration on the red shields. Cato blocked the blows of the enemies in front of him, and thrust his blade out between his shield and that of the man next to him whenever a Briton dared to come within range. When he could, Cato glanced to each side to try to snatch some overview of how the fight was progressing. Despite the initial ferocity of their charge, the Britons were outnumbered and outfought, and the Roman line was never in danger of being broken.