It is well known that after putting in a charge, the big horses of the heavy cavalry, and above all those of the Cuirassiers, cannot continue to gallop for very long. So it was the 23rd and the 24th Chasseurs who took up the pursuit of the enemy, while the Cuirassiers followed in the second line, at a slower pace.

Tchitchakoff had not only made a mistake in attacking Oudinot but he had also brought with him all the baggage of his army, which filled more than fifteen hundred vehicles, so that the rapid retreat of the Russians caused such confusion that the two regiments of Castex's brigade often found themselves hindered by the carts which had been abandoned by the enemy. This confusion became even worse when we entered the town, where the streets were cluttered with baggage and draught horses, through which obstructions Russian soldiers, who had thrown away their arms, wove their way as they sought to rejoin their units. We managed to reach the centre of the town, but only after losing precious time, which allowed the Russians to cross the river.

Our orders were to reach the bridge and try to cross it at the same time as the fleeing Russians; but to do this one had to know where the bridge was, and none of us knew the town. My troopers brought me a Jew whom I questioned in German, but he either did not know, or pretended not to know the language, and I could get no information from him. I would have given a great deal to have had with me my Polish servant, Lorentz, to act as interpreter, but the coward had remained behind as soon as there was any fighting. So we had to comb the town until we eventually came to the Beresina. The river was not yet sufficiently frozen to permit one to cross on the ice, so it was necessary to use the bridge, but to take the bridge would require infantry, and our infantry was still three leagues from Borisoff. To take their place, Marshal Oudinot, who had arrived on the scene, ordered General Castex to dismount three quarters of the troopers of the two regiments, who armed with muskets could attack the bridge on foot. We left the horses in the nearby streets guarded by one or two men, and headed for the river behind General Castex, who on this perilous enterprise wished to be at the head of his brigade.

The defeat suffered by the advance-guard had produced consternation in Tchitchakoff's army, the utmost disorder ruled on the side of the river which it occupied, where we could see a mass of fugitives disappearing into the distance; so although it had at first seemed to me that it would be extremely difficult for dismounted troopers, without bayonets, to force a passage over the bridge, and keep possession of it, I began to hope for a successful outcome, for the opposition was no more than a few musket shots. I therefore ordered that as soon as the first platoon reached the right bank it should occupy houses adjoining the bridge so that being in control of both ends we could defend it until the arrival of our infantry. Suddenly, however, the cannons of the fort thundered into action, covering the bridge with a hail of grape-shot, which forced our little group to fall back. A body of Russian sappers used this breathing space to set fire to the bridge, but as their presence prevented the gunners from firing, we took the opportunity to attack them, killing or throwing into the river the greater part of them. Our Chasseurs had already extinguished the fire when they were charged by a battalion of Russian Grenadiers, and driven at bayonet point off the bridge, which was soon set alight in many places and became a huge bonfire whose intense heat made both sides move away.

The French had now to give up hope of crossing the Beresina at this point, and their line of retreat was cut!…This was for us a fatal calamity, and contributed largely to changing the face of Europe, by shaking the Emperor on his throne.

Marshal Oudinot, once he saw that it was impossible to force a passage over the river at Borisoff, considered that it would be dangerous to have the town choked by the rest of his troops, so he ordered them to halt and set up camp while they were still some distance away. Castex's brigade stayed on its own in Borisoff and was forbidden to communicate with the other units, from which it was hoped to conceal for as long as possible the disastrous news of the burning of the bridge, which they did not hear about until forty-eight hours later.

Under the conventions of war, the enemy's baggage belongs to the captors. General Castex therefore authorised the troopers of my regiment and those of the 24th to help themselves to the booty contained in the 1500 wagons and carts abandoned by the Russians in their flight to the other side of the bridge. The quantity of goods was immense, but as it was a hundred times more than the brigade could carry, I called together all the men of my regiment and told them that as we were to make a long retreat, during which I would probably be unable to make the distributions of rations which I had done during all the campaign, I would advise them to provide themselves mainly with foodstuff, and think also about protection from the cold, I reminded them that an overloaded horse will not last for long, and that they should not weigh theirs down with articles of no use in war. "What is more," I told them, "I shall hold an inspection, and anything which is not food, clothing, or footwear will be rejected without exception." General Castex, to avoid all argument, had planted markers, which divided the mass of vehicles into two parts, so that each regiment had its own area.

Oudinot's forces surrounded the town on three sides, the fourth was bounded by the Beresina, and there were a number of observation posts, so that our soldiers could examine the contents of the Russian carts in safety. It appeared that the officers of Tchitchakoff's army treated themselves well, for there was a profusion of hams, pastries, sausages, dried fish, smoked meat and wines of all sorts, plus an immense quantity of ships' biscuits, rice, cheese, etc. Our men also took furs and strong footwear, which saved the lives of many of them. The Russian drivers had fled without taking their horses, almost all of which were of good quality. We took the best to replace those of which the troopers complained, and officers used some as pack-horses to carry the foodstuff which they had acquired.

The brigade spent another day in Borisoff, and as in spite of the precautions which had been taken, the news of the destruction of the bridge had spread throughout 2nd Corps, Marshal Oudinot, in order to allow all his troops to take advantage of the goods contained in the enemy vehicles, arranged that successive detachments from all the regiments might enter the town, to take their share of the plunder. Notwithstanding the quantity of goods of all kinds taken by Oudinot's men, there remained enough for the numerous stragglers returning from Moscow on the following day.

The supreme command ,and indeed all officers who were able to appreciate the situation, were extremely worried. We had before us the Beresina, on the opposite bank of which were gathered Tchitchakoff's forces, our flanks were threatened by Wittgenstein, Koutousoff was on our tail, and except for the debris of the Guard and Oudinot's and Victors' corps, reduced now to a few thousand combatants, the rest of the Grande Armee, recently so splendid, was composed of sick men and soldiers without weapons, whom starvation had deprived of their former energy. Everything conspired against us; for although, owing to a drop in the temperature, Ney had been able, a few days previously, to escape across the frozen Nieman, we found the Beresina unfrozen, despite the bitter cold, and we had no pontoons with which to make a bridge.