his left, opposite the Mosin wood. Gazan's division covered the rest of the Russian line. The few guns were deployed on the left and in the centre. At about 11:00 AM the French right advanced against Baggovut. The Russian cossacks and cavalry were driven back and Baggovut sent forward a Jäger unit, which was driven back despite artillery support. The French centre had also advanced, to attack Baggovut from the flank. But this manoeuvre exposed them to the Russian cavalry line, seven squadrons of which suddenly attacked the French flank in a sudden snow storm while Baggovut's cavalry and the jägers attacked from the front. A French infantry battalion then took the Russian cavalry in their flank. After a confused melee the Russians fell back to their original position. Lannes's cavalry division, under Trelliard tried to advance but was driven off by artillery fire. At the same time as the French right attacked, on the French left Suchet's division, led by Lannes in person, attacked the position held by Barclay. The initial attack drove the Russians out of the wood, and captured the battery stationed there, but Barclay's reserve drove the French back into the wood and recaptured the guns. The French centre had also advanced. The Russian cavalry withdrew behind the main line, exposing the French to artillery fire from the Russian batteries. By about 2 p.m. the French position looked dangerous. The Russian left had held, the French centre was suffering from the artillery fire, and on the right increasing pressure was beginning to force Suchet's men out of the wood. A French retreat looked a distinct possibility when unexpected reinforcements arrived. The 3rd Division of Davout's 3rd Corps, temporarily commanded by his Chief of Staff Fournier, had been ordered to pursue a Russian column apparently retiring on Pułtusk. Concerned about the strength of the Russian cavalry force which was escorting guns and stores, Fournier had pursued but not engaged. He was preparing to stop for the night when he heard the sounds of combat to his right, and so marched his men towards Pułtusk. Due to the state of the roads he was only able to bring up one gun. Seeing this force approach, Bennigsen wheeled back his main line to face the wood, thus reducing the artillery fire directed at Lannes's units. Barclay, finding Fournier attacking his right flank, fell back to the right of the