‘Indeed.’ Arthur agreed. ‘I spoke to him less than two hours ago, just as the battle began. Unless we are attacked first, it is my intention to march the army to his support.’

‘Bravo!’The Prince nodded. ‘The Corsican pig will soon be on the run, eh?’

‘That is my fervent hope, your highness. But first we must secure control of the crossroads.’

They were interrupted by a fresh exchange of musket fire in the woods, far closer this time. Figures emerged from the treeline, running back towards the Prince of Orange’s position. Some had lost their hats, and others had abandoned their muskets. They disappeared into the rye and only the swirls of the tall stalks marked their passage. Behind them came the first of the French skirmishers, advancing out of the woods towards the right of the Dutch brigade. To the south, approaching through more of the crops, Arthur could make out another line of skirmishers, and behind them a shimmering mass of bayonets. A moment later the crested helmets of cuirassiers appeared to the left, working their way towards the vital Namur road that linked the two allied armies.

‘We are in some difficulty, your grace,’ said Somerset as he watched the enemy approach.

‘I have eyes,’ Arthur snapped. He turned in his saddle and stared up the road leading to Brussels. A British column was approaching, at its head the unmistakable figure of General Picton in his black coat and top hat, looking for all the world like an undertaker. ‘Ride to Picton. Tell him to send one of his officers back down the road. He is to tell every formation he encounters that they must march for Quatre Bras as swiftly as they can!’

Without waiting to salute, Somerset spurred his horse into a gallop and raced towards the oncoming British soldiers. By the time he had returned to his commander Arthur was watching the steady progress of the French as they emerged from the wood and began to drive back the Dutch brigade on the right. On the left the French cavalry were forming a line to charge. Arthur could see the first of the Dutch troops beginning to waver as they saw the danger. Some of the men began to step back, disordering the line, and then the first abruptly turned and ran, dropping his musket and then wriggling out of the straps of his backpack as he fled. Arthur glanced back to see that Picton’s leading regiment, the Ninety-second, Highlanders, were deploying into a line a few hundred yards behind the Prince of Orange’s position. More regiments were advancing to extend the line, and over to the left another column, in the black uniforms of the Brunswickers, was striking out towards the left, to support the wavering Dutch.

‘This is going to be a close fight,’ Arthur muttered.

‘Oh, you need not worry, sir,’ the Prince of Orange responded cheerfully. ‘My men will stand their ground.’

‘I hope so.’