Yorck ordered Jürgass to move 3,000 Reserve cavalry from the highway to the left flank to counter the French cavalry threat. They were joined by the Brandenberg Hussar Regiment under Friedrich von Sohr. Many of the Prussian cavalrymen were Landwehr - second class soldiers. Jürgass formed his horsemen in two ranks, with the Lithuanian and 1st West Prussian Dragoon Regiments in the first line. There was also a Russian dragoon regiment on hand. Defrance and Laferrière placed the Guard Dragoons in the first line and the Horse Grenadiers, cuirassiers, and horse carabiniers in the second line. As the Prussian front line charged, it was met with a volley of carbine fire from the dragoons. At the same time, the Brandenburg Dragoons charged the 10th Hussars and French dragoons routed the Russian dragoons. Soon there was a large cavalry melee near the Petite-Baloy farm.