‘No more than ten thousand, sire.’

‘Good . . . good.’ Napoleon concentrated for a moment. ‘If Vandamme can keep pressing them for the direction of Pirna, then they will break when we renew our attack tomorrow.’ He sneezed again, and then waved Berthier away. ‘I will try to rest. You may wake me if there is any important news, or any sign of movement from the enemy.’

‘Yes, sire.’

Once Berthier left him, Napoleon reached for some more wood to put on the brazier, and then wrapped the blanket tightly about him and shut his eyes. He felt truly wretched - his body strained beyond the point of endurance. His body had become weak, far weaker than it had been in the glorious early years when he had been lithe, and tough, and lack of sleep and long marches had been as nothing to him. The years had marked him, as had the burdens of being a ruler. As he leaned towards the fire he felt the pressure of his stomach on his thighs and was struck by a sudden sense of revulsion at the sorry state of his physique. The thin sallow face of the young general had become almost spherical, with an unseemly roll of flesh forming under his chin. He tired too easily, and the effort of climbing the cathedral tower had left him gasping for breath by the time he reached the top. The present campaign must end soon, he reflected, before his failing health incapacitated him. If not, then he in turn would fail the army, who depended on him to guide them to victory.

If ever there was an implacable tyrant in this world, he mused miserably, it was time. The remorseless army of time, in its serried ranks of hours, days and years, swept all before it. The greatest general was as powerless as the rawest recruit in the face of such an enemy, and all men were doomed to defeat.

Napoleon was bracing himself to climb the tower again when a message came in from one of the cavalry pickets. The allied army had withdrawn. Only a small rearguard remained, covering the line of retreat.

‘Damn them!’ Napoleon growled. ‘They outnumber me and still they run. Cowards.’ He turned away from the tower steps and went over to the map table. ‘Do we know which direction they are headed?’

‘Yes, sire. South, towards Bohemia.’

‘Then we must effect a pursuit immediately. They have several hours’ lead on us. The Grand Army must be ready to advance this morning. Murat can take the cavalry forward to harass them, and try to slow them down.’ Napoleon quickly examined the map. ‘We must send word to Vandamme. If he can reach Teplitz before the allies emerge from the mountains then they will be caught between Vandamme and us. The campaign is still ours to win.’