In January 1807 70,000 Napoleonic soldiers traversed the town and had to be supplied. Napoleon headquartered here from 21 January to 2 February prior to the Battle of Eylau. The French troops caused a fire which damaged the town furthermore. In 1813 Tsar Alexander I of Russia received the official message of the Prussian accession to the struggle against Napoleon by General von Kleist at Willenberg.