The French, after emerging from the narrow pass of Kosen, formed up near the village of Hassenhausen; it was here that the real battle took place, because the Emperor was mistaken when he thought that he had before him at Jena the king and the bulk of the Prussian army. The action fought by Davout's men was one of the most terrible in our annals. His divisions, having successfully resisted all the attacks of the enemy infantry, formed into squares and repelled numerous cavalry charges, and not content with this, they advanced with such resolution that the Prussians fell back at every point leaving the ground strewn with dead and wounded. The Prince of Brunswick and General Schmettau were killed, Marshal Mollendorf was seriously wounded and taken prisoner.

The King of Prussia and his troops at first carried out their retreat towards Weimar in reasonably good order, hoping to rally there behind the forces of Prince Hohenlohe and General Ruchel, whom they supposed to have been victorious, while the latter, having been defeated by Napoleon, were for their part, on their way to seek support from the troops led by the king. Those two enormous masses of soldiers, beaten and demoralised, met on the road to Erfurt; it needed only the appearance of some French regiments to throw them into utter confusion. The rout was total, and was a just punishment for the bragging of the Prussian officers. The results of this victory were incalculable, and made us masters of almost all Prussia.

The Emperor showed his great satisfaction with Marshal Davout and with the divisions of Morand, Friant and Gudin by an order of the day, which was read out to all companies and even in the ambulances carrying the wounded. The following year Napoleon created Davout Duke of Auerstadt, although he had fought less there than in the village of Hassenhausen; but the King of Prussia had had his headquarters at Auerstadt, and the Prussians had given this name to the battle which the French called the battle of Jena.

The army expected to see Bernadotte severely punished, but he got away with a sharp reprimand; Napoleon was afraid of upsetting his brother Joseph, whose sister-in-law, Mlle. Clary, Bernadotte had just married. We shall see later how Bernadotte's behaviour during the battle of Auerstadt served, in a way, as a first step towards mounting the throne of Sweden.

I was not wounded at Jena, but I was tricked in a way that still rankles after forty years. At a time when Augereau's corps was attacking the Saxons, the marshal sent me to carry a message to General Durosnel, who commanded a brigade of Chasseurs, ordering him to charge the enemy cavalry. It was my job to guide the brigade along a route which I had already reconnoitred. I hurried away and put myself at the head of our Chasseurs, who threw themselves on the Saxon squadrons. The Saxons put up a stiff resistance and there was a general melee, but eventually our adversaries were forced to retreat with losses. Towards the end of the fighting, I found myself facing an officer of Hussars, wearing the white uniform of Prince Albert of Saxony's regiment. I held the point of my sabre against him and called on him to surrender, which he did, handing me his sword. As the fighting was over, I generously gave it back to him, as was the usual practice among officers in these circumstances, and I added that although his horse, under the conventions of war, belonged to me, I did not wish to deprive him of it. He gave me many thanks for this kind treatment and followed me as I returned to the marshal, very pleased with myself for bringing back a prisoner. But when we were about five hundred paces from the Chasseurs, this confounded Saxon officer, who was on my left, drew his sabre, wounded my horse on the shoulder and was about to strike me if I had not thrown myself on him. Although I had no sabre in my hand, our bodies were so close that he did not have room to swing his sabre at me, so he grabbed my epaulet, and pulled me off balance, my saddle slipped under my horse's belly and there I was with one leg in the air and my head hanging down, while the Saxon made off at full speed to rejoin the remains of the enemy army. I was furious, partly at the position I was in, and partly at the ingratitude with which this foreigner had repaid my courtesy. So when the Saxon army had been made prisoners, I went to look for my Hussar officer, to teach him a lesson, but he had disappeared.

I have said that the Duke of Hesse-Darmstadt, our new ally, had joined his troops to the Emperor's. This brigade had uniforms exactly like those of the Prussians, so several of their soldiers were killed or wounded mistakenly during the action. The young Lieutenant De Stoch, my friend, was on the point of meeting the same fate, and had already been seized by our Hussars, when, having seen me, he called out to me and I had him released.

The Emperor rewarded most generously the priest of Jena, and the elector of Saxony, having become king as a result of the victories of his ally Napoleon, rewarded him also; so that he lived very comfortably until 1814 when he took refuge in France to escape from the vengeance of the Prussians. They, however, had him taken up and shut away in a fortress where he spent two or three years. Eventually, the King of Saxony having interceded on his behalf with Louis XVIII, the latter reclaimed the priest on the grounds that he had been arrested without proper authority, and the Prussians having released him, he came to live in Paris. After the victory at Jena, the Emperor ordered a general pursuit of our enemies, and our columns took an enormous number of prisoners.

The King of Prussia had great difficulty in reaching Magdeburg and getting from there to Berlin, and it was said that the queen nearly fell into the hands of the scouts of our advance-guard.

It would take too long to detail all the disasters which befell the Prussian army; it is enough to say that of those troops who marched to attack the French, not a battalion escaped; they were all captured before the end of the month. The fortresses of Torgau, Erfurt and Wittemburg opened their gates to the victors who, having crossed the Elbe at several points—Augereau's corps crossing near Dessau—headed for Berlin.

Napoleon stopped at Potsdam, where he visited the tomb of Frederick the Great; then he went to Berlin where, contrary to his usual practice, he wished to make a triumphal entry. Marshal Davout's corps headed the procession; an honour to which it was entitled as it had done more fighting than the others. Then came Augereau's corps and then the guard.