Lindsey Davis - The Iron Hand of Mars

I and my party stayed.

The aurochs must have liked my face; I could tell it had chosen me next.

I had to protect Helvetius. I began stepping slowly to my left. It was the only direction open, and pretty soon I had to stop, for I was nearing the edge of the creek. The bank dropped down for a foot or more, and then there was a sinister overhang of long dirty grasses. The last thing I wanted was to end up in an uncertain depth of water, wallowing helplessly while the massive creature charged.

The aurochs breathed ferociously, giving the bloodstained body of the dead legate a final contemptuous toss with one tremendous horn. It waited until I stopped, then it began to move.

The rest was fast, messy and unheroic.

Behind the aurochs my three startled comrades came to life. Orosius began whooping and reached for a dropped javelin. I saw the servant race towards Helvetius. Lentullus bravely hurled his shrimp bucket. It hit the aurochs on the nose. The aurochs flung up its head, but kept coming. It was like being rushed by a rapidly moving house.

The sting of the shrimp bucket didn't stop it – nothing could. But while it blinked, I just had time to jump somewhere. Trapped by the creek, there was only one direction: I flung myself sideways. The beast passed me, so close that I snatched in my arm.

The aurochs turned on nothing. Its head was down. If I had run it would have gored me before my second stride, but something did stop it this time: Lentullus. He had run out and grabbed it by the tail. His face was contorted with effort as by some fluke he held on. The powerful animal swung angrily away from me. With a violent shake to and fro of its shoulders it dislodged the young idiot. The whiplash from its rump flung our boy far into the creek. By then another idiot was doing something stupid. M. Didius Falco, who had once seen a Cretan wall fresco, chose this dank German riverbank as an arena to revive the lost art of bull-dancing. While the aurochs was still bellowing at Lentullus, I skipped straight for it and leapt astride its back.

Its pelt was as coarse as nautical rope and smelt of the wild. A tail clogged with dung lashed my spine. I had only one weapon, in my boot as usual: my knife. Somehow I freed it. My other arm clamped around a horn. There was no time to think: death was reaching for one of us. I gripped with both knees, heaved with all my strength on the mighty horn, hauled up the head, leaned round a flicking ear and savage eye, then started hacking through the aurochs' upstrained throat.

The kill was neither clean nor quick. It took more time, and a great deal more energy, than anyone would ever think having stood in a sparkling white toga to watch the refined priests of Jupiter conduct a taurine sacrifice on Capitol Hill.

'Mithras!' I thought the awed cry came from Helvetius, but it must have been his servant.

My left arm was locked so tightly where I had clung on that it was hard to free. The smell of the beast seemed to permeate my own clothes and skin. I sank to the ground, shaking. Orosius rushed up and dragged me clear. Lentullus staggered from the creek, then neatly passed out. 'Must be the shock,' Orosius muttered, turning aside to attend to him. 'Finding something he could actually do…'

I felt disgusted – with myself, with the animal whose anger had forced me to this, and with the hot blood all over me. I dropped my forehead on to my hand, then whipped away my palm as I felt more blood on that. I managed to limp across to Helvetius. His servant, whose name was Dama, looked up at me.

'I knew I should have gone to Moesia…' he ranted bitterly. Then he burst into tears.

Helvetius was dead.

Hardly had I fought back my own distress when some of the legate's hunting party ventured to reappear. They were led by the Gaul with the sneer, no doubt intent on self- preservation.

It was a brief confrontation. I was still kneeling by Helvetius, gripping his hand. I said to the Gaul, 'I don't want ever to see your face in Free or Roman Germany. You've killed to protect your industry, and you've killed to protect yourself. This is where it stops.'

'Proof?' he jibed, gesturing to the dead centurion.

Suddenly Dama gave voice. He addressed himself to me, as if he could not trust himself to speak to his master's killer. 'Helvetius Rufus was a private man, but he talked to me while I was arming him. He told me what he saw in Gaul.'

'Would you give evidence in court?' He assented.

The Gaul raised a spear. His intention was obvious. But we were no longer unprotected. Both Orosius and Lentullus lifted javelins themselves, ready to throw.

I stood up, covered in blood. I must have looked terrible. 'One word out of place, or a gesture I don't like, and I'll be happy to show you how the aurochs feels now it's dead!'

The men in the hunting party all backed off slowly. I waved them away with an angry gesture. They moved equally slowly out of sight, taking the Gaul from Lugdunum. I do not know what happened to them afterwards, nor do I care. As Celts, they were at far less risk in Germania Libera than we were.

That night we dined on aurochs steaks, but they had a bitter taste. We set a double watch. No one slept much. We broke camp early, then set off in a southerly direction, hoping that somewhere along the riverbank we might find the dead legate's ship.

We were going home. We had two corpses to bring with us, and more than one of us felt broken-hearted. Soon we all were.

Because, as we tramped on mournfully, we came to a wooded area. A little while after we entered it, we found there were other occupants. There were five times as many of them, and they had spotted us. They were a war band of the horse-riding, Rome-hating Tencteri.

We were surrounded before we had any inkling, but they did not attack immediately. Perhaps they were as surprised as us to find other people in their woods.

We formed up the recruits into a square – quite well, considering they had only learned the manoeuvre theoretically. Helvetius had taught them, however. As a formation the result was passable. But we all knew that we had too small a square.

The real point of a square is to lock shield-rims all around it in a protective wall. We had no shields.

Justinus was too tired and upset for a flamboyant oration, but he told the recruits to do their best. They exchanged frank glances like veterans; they understood the situation we were in.

It was late afternoon. A fine drizzle filled the woods. We were all unwashed, unfed and cold, with mist spiking our hair. I noticed that our boot-leather had set hard and was curled at the edges, with white tracery from mud and salt. The trees had turned colour in the last week or so. Winter was issuing warnings in the frosty air.

I could smell leaf-mould and fear. This was one crisis too many. It felt like a nightmare where you slither through endless ludicrous disasters, knowing it's a nightmare and that you must escape soon, yet unable to break free and wake safe in your bed with someone friendly soothing you.

We could not understand why the Tencteri had made no move.

Sometimes we could glimpse them between the trees. They were on horseback. Their presence was palpable on every side. We heard their mounts stamping restlessly and their harnesses chinking. Once a man coughed. If he lived in this rising river fog, it was understandable.

They were just out of spear range. For what seemed ages we stood there, straining for the first movement that would mean the end for us. We heard the shuffle of hooves in the crisp fallen leaves. We heard a shifty breeze rustle overhead.

I thought I heard something else.

Justinus and I were standing back to back. He must have sensed my tension for he looked round. I had my face raised high into the drizzle, struggling to catch sound or sense. I had nothing to tell him, but that odd quiet soul had brought back from Veleda's tower his habit of solitary action. He listened too, without comment. Then he let out a yelp and before we could stop him, he broke from the square.