The Russians, however, retreated without waiting for the French army, which shortly occupied Wilna, the capital of Lithuania. It was near here that there took place a cavalry encounter in which Octave de Segur, who had been with me on Massena's staff, was captured by the Russians while leading a squadron of the 8th Hussars which he commanded, he was the elder brother of General the Comte de Segur. On the same day that the Emperor entered Wilna, Marshal Oudinot's troops came up against Wittgenstein's Russians at Wilkomir, where the first serious engagement of the campaign took place. I had not previously served under Oudinot, and this debut confirmed the high opinion I had of his courage, without convincing me of his intelligence.

One of the greatest faults of the French at war is to go, without reason, from the most meticulous caution to limitless confidence.

Now, since the Russians had allowed us to cross the Nieman, invade Lithuania and occupy Wilna without opposition, it had become the done thing, amongst certain officers to say that the enemy would always retreat and would never stand and fight. Oudinot's staff and the marshal himself frequently stated this, and treated as fairy tales the information given by the peasants that there was a large body of Russian troops positioned in front of the little town of Wilkomir. This incredulity nearly resulted in disaster, as you will see.

The light cavalry, being the eyes of the army, while on the march is always in front and on the flanks. My regiment, then, was less than a league ahead of the infantry, when, having gone a little way beyond Wilkomir without seeing any sign of the enemy, we were confronted by a forest of huge pine trees, through which the mounted men could move with ease but whose branches obscured the distant view. Fearing an ambush, I sent a single squadron, commanded by a very capable captain, to investigate. In about 15 minutes he came back and reported that he had seen an enemy army. I went to the edge of the forest from where I could see, at about a cannon shot from Wilkomir, behind a stream, a hill on which drawn up in battle order were 25 to 30 thousand Russian infantry, with cavalry and artillery.

You may be surprised that these troops did not have in front of them any outposts or pickets or scouts, but that is how the Russians operate when they are determined to defend a strong position. They allow the enemy to approach without any warning of the resistance they are about to meet, and it is only when the main body of their opponents comes within range that they open a ferocious fire with musketry and cannon, which can shatter the columns of their adversaries. It is a method which has often produced good results for the Russians; so General Wittgenstein had prepared this welcome for us.

The situation seemed to me to be so serious that to keep my regiment out of sight, I ordered them to go back into the forest while I myself hurried to warn Marshal Oudinot of the danger which lay ahead.

I found him in some open country, where having dismounted and halted his troops, he was peacefully eating his lunch in the midst of his staff. I expected that my report would shake him out of this false security, but he treated it with an air of disbelief, and clapping me on the shoulder he called out "Let's go! Marbot here has discovered thirty thousand men for us to thump." General Lorencez, the marshal's son-in-law and his chief-of-staff was the only one to take me seriously; he had once been aide-de-camp to Augereau and he had known me for a long time. He came to my defence saying that when the commander of a unit says "I have seen" he should be believed, and that to take no notice of information brought by an officer of the light cavalry was to court disaster. These observations made by his chief-of-staff caused the marshal to think, and he had started to question me about the enemy presence, which he still seemed to doubt, when a staff-captain by the name of Duplessis arrived, all out of breath, and announced that he had searched the whole area and had even been into the forest, and had seen not a single Russian. At this the marshal and his staff began laughing at my fears, which greatly upset me. Nevertheless, I kept my mouth shut, certain that before very long, the truth would become apparent.

Luncheon being over, the march got under way once more and I returned to my regiment, which formed the advance-guard. I led them through the trees as I had done previously, for I could see what was going to happen the moment we emerged opposite the enemy positions. In spite of what I had told him, the marshal decided to go down a wide, dead straight road which ran through the forest; but he had scarcely reached the edge of the trees when the enemy, seeing the large group formed by his staff, opened a running fire from their cannons, which placed opposite the road could fire directly along it and threw into disorder the gilded squadron, recently so full of themselves. Fortunately no one was hit by this fire, but the marshal's horse was killed, as was that of M. Duplessis and a number of others. I had been amply avenged, and I must confess, to my shame, that I had difficulty in hiding my satisfaction at seeing those who had scoffed at my report and treated as fantasy what I had said about the enemy presence, taking to their heels under a hail of shot and scrambling over ditches as best they could to seek shelter behind the great pine trees! The worthy General Lorencez, whom I had warned to stay in the forest, laughed heartily at this scene. In fairness to Oudinot, I must say that once remounted, he came and apologised for for his behaviour at luncheon, and asked me to brief him on the Russian positions, and point out a route through the forest which the infantry might take without being too much exposed to the enemy's guns.

Several officers of the 23rd who, like me, had been through the woodland in the morning, were detailed to guide the infantry divisions. Nevertheless, on their emerging from the trees they were subjected to a terrible cannonade, which could have been avoided if, having been warned of the Russian presence, there had been an attempt to turn one of their flanks, instead of making a frontal approach. As it was, we were now committed, once we emerged from the wood, to attacking the most heavily defended point and taking the bull by the horns.

However, our gallant soldiers engaged the enemy with such determination that they drove them from all their positions, and after two hours of fighting they began to retreat. This operation was not without danger, for, to carry it out, they had to go through the town and cross the bridge over a very steep-sided stream. This manoeuvre, always difficult to execute under fire, started off in an orderly fashion, but our light artillery, having taken up a position on a height which overlooked the town, soon, by means of its gunfire, produced disorder among the enemy columns, which broke ranks and rushed to the bridge. Once they had crossed the stream, instead of regrouping they fled helter-skelter over the open ground of the opposite bank, where the retreat soon became a rout! Only one regiment, that of Toula, stood its ground on the town side of the bridge. Marshal Oudinot very much wanted to force a passage across the bridge, to complete his victory by pursuing the fugitives on the other side of the stream; but our infantry had hardly reached the suburbs; it would take them at least 15 minutes to reach the bridge, and time was precious.