Taking a firm grasp of the shaft, and ensuring that the angle was right he suddenly pulled the javelin out as Decimus howled with agony. The point came free and there was a rush of blood from the puncture. The optio examined it quickly, then wrenched the legionary’s neck cloth away and bound the wound tightly.

‘Serves you bloody well right!’ Septimus snapped.’Shouldn’t have dropped your shield. How many times have you been told that in training?’

Decimus winced. ‘Sorry, sir.’

‘Now get up. You’re useless to us with that leg. Get back to the cohort.’

The legionary looked to Cato, who nodded his assent. With gritted teeth Decimus struggled to his feet and limped through the lines of his comrades. He started down the track, leaving a trail of small splashes of blood from the sodden dressing.

A voice shouted, ‘Here they come again!’

Cato raised his shield and pushed forward into the front rank. Septimus hurriedly took up position to the extreme right of the century. Cato glanced round, saw that his men were grimly prepared for the next charge by the enemy horsemen. Just behind him the century’s standard-bearer had drawn his sword and was leaning forward expectantly.

‘Standard to the rear!’ Cato snapped at him. The bearer frowned, sheathed his sword and pushed his way to the rear of the small formation. Cato shook his head angrily. The man should know better. His first duty was to guard the standard, not to get stuck into the enemy. He’d have to have words with the bearer, if they were still alive tomorrow.

With a wild cry the horsemen surged forward, the hoofs of their mounts drumming deafeningly on the dry track. For a moment Cato was about to order another volley of javelins, but then realised that the century would need to conserve every advantage in the ordeal of arms they would have to endure.

‘Shields up!’ Cato shouted. ‘Second rank! Pass javelins forward!’