Jochi’s eyes were cold as he replied.

‘My father would say it is what we do, that there is no better way for a man to spend his years than at war with enemies. He might also say you enjoy it, general, and that is all the reason you need.’

Tsubodai’s gaze did not waver.

‘Perhaps he would say that, but you hide behind his words. Why are we here, Jochi? We do not want their big horses, even for meat. Why will I risk the lives of warriors to smash the column you see?’

Jochi shrugged irritably.

‘If it is not that, I do not know.’

‘For you, Jochi,’ Tsubodai said seriously. ‘When you return to your father, you will have seen all forms of battle, in all seasons. You and I have captured towns and raided cities; ridden desert and forests so thick we could hardly cut our way through. Genghis will find no weakness in you.’ Tsubodai smiled briefly at Jochi’s stony expression. ‘I will be proud when men say you learned your skill under Tsubodai the Valiant.’

Jochi had to grin at hearing the nickname from Tsubodai himself. There were no secrets in the camps.

‘There it is,’ Tsubodai muttered, pointing to a distant messenger racing to the head of the Russian column. ‘We have an enemy who leads from the front, a very brave man.’

Jochi could imagine the sudden dismay among the knights as they looked into the bowl of hills and saw the Mongol warriors. Tsubodai grunted softly as an entire rank peeled off the column and began trotting up the slopes, the long spears ready. He showed his teeth as the gap began to narrow. They were charging uphill, in their arrogance. He longed to teach them their error.

‘Do you have your paitze, Jochi? Show it to me.’

Jochi reached behind him to where his bow holder was strapped to the saddle. He lifted a flap in the stiff leather and pulled out a plaque of solid gold, stamped with a wolf’s head. At twenty ounces, it was heavy, but small enough for him to grip in his hand.

Tsubodai ignored the men rising doggedly up the hill to face the eldest son of Genghis.

‘You have that and the right to command a thousand by my hand, Jochi. Those who command a jagun have one of mere silver, like this.’ Tsubodai held up a larger block of the whitish metal. ‘The difference is that the silver paitze is given to a man elected by the officers of each arban below him.’

‘I know this,’ Jochi said.

Tsubodai glanced back at the knights labouring closer.

‘The officers of this jagun have asked to have you lead them, Jochi. I had no part in it.’ He held out the silver paitze and Jochi took it joyfully, passing back the plaque of gold. Tsubodai was solemn and deliberately formal, but his eyes were bright.

‘When you return to your father, Jochi, you will have known all ranks and positions.’ The general gestured, cutting the air with his hand. ‘On the right, the left and the centre.’ He looked over the heads of the straining knights cantering up the hill, seeing a flicker of movement on a crag in the distance. Tsubodai nodded sharply.

‘It is time. You know what you have to do, Jochi. Command is yours.’ Without another word, Tsubodai clapped the younger man on the shoulder and rode back over the ridge, leaving the jagun of riders in the care of one suddenly nervous leader.

Jochi could feel the combined stares of the hundred men on his back as he struggled to hide his pleasure. Each arban of ten elected one man to lead them, then those men elected one of their number to lead the hundred in war. To be so chosen was an honour. A voice in his mind whispered that they only honoured his father, but he crushed it, refusing to doubt. He had earned the right and confidence swelled in him.

‘Bow lines!’ Jochi called. He gripped his reins tightly to hide his tension as the men formed a wider line so that every bow could bear. Jochi glanced over his shoulder, but Tsubodai had truly gone, leaving him alone. The men still watched and he forced the cold face, knowing they would remember his calm. As they raised their bows, he held up a clenched fist, waiting while his heart thumped painfully in his chest.

At four hundred paces, Jochi dropped his arm and the first flight of arrows whipped into the air. It was too far and those that reached the knights splintered on their shields, now held high and forward, so that almost the entire man was protected. The long shields showed their purpose as a second flight struck the ranks without a single rider going down.

The powerful horses were not fast, but still the gap closed and Jochi only watched. At two hundred paces, he raised his fist once more and another hundred arrows waited on creaking strings. At such a distance, he did not know if the knights’ armour would save them. Nothing ever had.

‘Shoot as if you have never owned a bow,’ he shouted.

The men around him grinned and the arrows snapped out. Jochi winced instinctively at shafts that went clear over the enemy heads, as if loosed by panicking fools. Only a few struck and, of those, still fewer brought a horse or man down. They could hear the thunder of the charge now and saw the front ranks begin to lower their spears in anticipation.

Facing them, Jochi smothered his fear in a sudden bloom of rage. He wanted nothing more than to draw his sword and kick his mount down the slope at the enemy. Shaking with frustration, he gave a different order.

‘Retreat over the ridge,’ Jochi shouted. He wrenched at his reins and his horse jerked into a run. His jagun shouted incoherently, turning in chaos after their general. Behind him, he heard guttural voices yelling in triumph and acid rose in his throat, though whether it was from fear or anger, he did not know.

Ilya Majaev blinked sweat out of his eyes when he saw the Mongols turn like the filthy cowards they were. As he had a thousand times before, he took a loose grip on his reins and tapped himself on his chest, praying to St Sophia to bring enemies of the faith under his hooves. Beneath the chain mail and padded tunic lay a fragment of her fingerbone in a locket of gold, the most precious thing he possessed. The monks at Novgorod had assured him he would not be killed while he wore it and he felt strong as his knights hammered over the ridge. His men had left the cathedral city two years before, carrying messages east for the prince before they finally turned south and began the long trek that would take them to Jerusalem. Ilya had pledged his life with the others to defend that holy place from the unbelievers who sought to destroy her monuments.

It should have been a journey of prayer and fasting before they brought their skill in arms against godless men. Instead, they had been stung over and over by the Mongol army raiding the area. Ilya ached to have them close enough to kill and he leaned forward in the saddle as his mount lunged after the fleeing riders.

‘Give them unto me, O lord, and I will break their bones and trample on their false gods,’ he whispered to himself.

The Mongols were racing wildly down the far slope, but the Russian horses were powerful and the gap closed steadily. Ilya sensed the mood of the men around him as they snarled and called to each other. They had lost companions to flights of arrows in the darkness. Scouts had vanished without a trace, or worse, been found with wounds to make a man vomit. In a year, Ilya had seen more towns burned than he could remember, the plumes of black smoke drawing him in desperate pursuit. The marauding Mongols were always gone by the time he arrived. He urged his mount to gallop, though the weary animal’s sides were already heaving and clots of white saliva flicked up to strike his arms and chest.

‘On, brothers!’ Ilya shouted to the rest. He knew they would not tire with the tribesmen at last within reach. The Mongols were an affront to everything Ilya valued, from the peaceful streets of Novgorod, to the quiet calm and dignity of the cathedral to his blessed saint.