Shortly after midnight, Napoleon detected the campfires of Ozharovsky's 3,500-strong force near Kutkovo, south of Krasny. Recognizing that Ozharovsky's position was dangerously isolated from Kutuzov's main army, Napoleon dispatched the Young Guard on a surprise attack against the Russian encampment, which was not protected by pickets. The operation was first entrusted to General Jean Rapp, but at the last moment Napoleon replaced Rapp with General Roguet. François Roguet then divided the Guardsmen into three columns and began a silent advance on Ozharovsky's camp. In the ensuing combat, the Russians were taken completely by surprise and, despite their fierce resistance, were totally routed. As many as half of Ozharovsky's troops were killed or captured, and the remainder threw their weapons in a lake nearby Krasny and fled south. Lacking cavalry, Roguet was unable to pursue Ozharovsky's remaining troops.