After having seen the city early seized by the Swedish army, the Grand Notary of Lithuania,
Ludwik Konstanty Pociej launched a surprise attack with 3,000 men, although some sources state as few as 2,000 and others 4,000 men. They were equally matched by the Swedes with 3,000 men under
Carl Gustav Mörner stationed inside the city, although due to intense sickness it was realistically closer to 2,500. The Dala regiment alone had only 740 men prior to the battle in comparison to its original strength of 1,200. == Battle ==