Early on 17 February, Napoleon's leading elements under Etienne Maurice Gérard enveloped a Russian force led by Peter Petrovich Pahlen. In the Battle of Mormant, Pahlen's 2,500 infantry and 1,250 cavalry were overwhelmed by the French, suffering 3,114 killed, wounded or captured. A nearby Austrian force led by Anton von Hardegg remained largely inert while its allies were being cut to pieces. Finally, Hardegg allowed 550 troopers from the Schwarzenberg Uhlan Regiment Nr. 2 to assist the Russians. The Reval and Selenginsk Infantry Regiments suffered such heavy losses that they were withdrawn from the campaign. Next, the French struck Wrede's advance guard at Nangis and threw it back to Villeneuve-le-Comte.