Short answers, pulled from the story.
Napoleon attacked and defeated General-Leutnant Olsufiev's IX Corps near the village of Baye just south of Champaubert. The French forces achieved a six-to-one numerical advantage over the Russian troops present in the action.
General-Leutnant Alexander Nikitich Seslavin's force included General-major Prince Konstantin Poltoratsky under the command of General-Leutnant Olsufiev. A 19-year old French conscript captured Olsufiev while his fellow division commander Peter Yakovlevich Kornilov escaped with 1,500 to 2,000 men.
The French lost 600 killed and wounded out of 13,300 infantry and 1,700 cavalry engaged in the battle. The Russians lost 2,400 men and 9 guns from their total force of 3,700 soldiers and 24 guns.
Napoleon caught Olsufiev's IX Corps near the village of Baye just south of Champaubert. The French seized the Saint-Prix bridge over the Petit Morin River early in the morning before engaging Russian pickets by 10:00 am.
Allied generals separated their armies after defeating Napoleon at the Battle of La Rothière on the 1st of February 1814. Napoleon decided to abandon Troyes and fall back to Nogent-sur-Seine to contain Schwarzenberg while attacking Blücher's over-extended forces.