 Complete the following phrase:  On 9 February, Napoleon arrived at Sézanne with the Imperial Guard after a difficult march over muddy roads. French farmers brought their teams of horses to help pull the cannons through the quagmire. That day, Schwarzenberg asked Blücher to reinforce his right wing. Dutifully, the Prussian commander set out on 10 February with Kaptzevich and Kleist, moving southwest toward Sézanne. As the Allies marched, they heard the distant growl of cannons to their right. It was Napoleons army falling on Olsufievs outnumbered corps in the 