‘Ney has undone us. Just as he did at Jena. Besides, we have other matters to deal with.’ Napoleon turned to the map table and indicated the eastern half of the battlefield. Lobau’s corps had attacked the head of the Prussian column and been forced to fall back, giving up the village of Plancenoit. Napoleon had immediately sent in the Young Guard to drive the Prussians out. Shortly before Ney had taken the farmhouse, news arrived that Plancenoit was once more in Prussian hands, no more than a thousand paces from the road to Charleroi. Unless Blücher’s soldiers could be halted, there was a danger that the Army of the North would be surrounded. Only the six battalions of the Middle Guard and eight of the Old Guard, eight thousand men in all, remained in the army’s reserve.

‘We must stop the Prussians first,’ Napoleon announced. ‘Keep two battalions of the Guard back as a final reserve. Send the rest to form a line in front of Plancenoit. Have them form square in case the Prussians send cavalry forward. Then order two battalions of the Old Guard to retake the village.’

‘Two battalions?’ Soult shook his head. ‘Duhesme estimated that there were over ten battalions facing him at the village.’

‘That may be, but two is all I can spare. They know what is at stake and they will do their duty. See to it.’

Soult nodded reluctantly and dictated the order to one of his aides. As the officer rode off, down the road beside which the finest soldiers of the army stood waiting, Napoleon examined the map again. The recapture of Plancenoit would give him a reprieve only. If it was done, then there might still be time to beat Wellington. If he was routed then the remnants of the French army could wheel east and hold the Prussians at bay while Grouchy marched on their rear during the night. Napoleon felt a nervous sickness in his stomach at the great peril that threatened to engulf him. He tried to thrust it from his mind, turning away from the map and clenching his hands together behind his back as he stared towards Plancenoit.

Within half an hour of the order the sound of firing from the village intensified and Napoleon and his staff waited anxiously for news of the outcome. They were not kept long as one of Duhesme’s officers came galloping up. He reined in and bowed his head to Napoleon.‘Sire, I have the honour to report that the Old Guard have driven the Prussians back. Plancenoit is back in our hands.’