As the Durotriges crashed into the rear of the formation, the legionaries at the front tore at the barrier, driven to desperation by the knowledge that unless the cohort could continue to advance, it would be trapped and annihilated. Slowly, the barrier was wrenched apart and small gaps opened that a man could squeeze through. Macro quickly passed the word that no one was to take the enemy on single-handed. They must wait for his order. Some of the Durotriges, however, were not so prudent and dashed forward to get at the Romans the moment an opening appeared. They paid dearly for this impetuousness and were cut down the moment they reached the Romans. But in death they at least delayed the legionaries in their work. At last there were a number of openings large enough for several men to get through and Macro shouted an order to draw swords and form up at the gaps.

‘Cato! Get down to the left flank and take charge. Once I give the order, get through and form the men back into line as soon as you can on the far side. Got that?’

‘Yes, sir!’

‘Away with you!’

The optio eased his way back through the ranks of the century and then ran down to the left-hand corner of the formation.

‘Make way there! Make way!’ Cato shouted, pushing his way to the front. He saw an opening in the barricade, slightly to one side. ‘Close up on me! ‘When the centurion gives the order, we go through together!’

The legionaries bunched up on either side of their optio and joined shields so that the enemy would have little chance to strike at them as they forced their way through. Then they waited, swords poised, ears straining for Macro’s order above the war cries and screams of the Durotriges.

‘Sixth Century!’ The centurion sounded very distant to Cato. ‘Advance!’

‘Now!’ Cato shouted. ‘Stay with me!’

Pushing his shield out a little way to absorb any impact, Cato led off, making sure that the others kept close and retained the integrity of the shield wall. Although the larger branches had been cleared away, the ground beneath was littered with twisted remnants of wood and every step had to be taken carefully. As soon as the Durotriges became aware of the Roman thrust, their shouting reached a new pitch of rage and they hurled themselves onto the legionaries. Cato felt someone slam into his shield and quickly thrust his sword, sensing a glancing contact with his foe before he whipped his blade back ready to deliver the next blow. On both flanks, and behind, the men of the century pressed through, thrusting deeper into the dark mass of Britons on the far side of the barricade.