Battle of Lubrze The Battle of Lubrze was a night battle which took place during the Deluge ( part of the Second Northern War ) in August 1656 between Polish forces under voivode of Kalisz Andrzej Karol Grudziński and a Swedish - Brandenburg force under Jan Wejhard von Wrzesowicz . Swedish - Brandenburg forces were coming to provide relief to the besieged town of Kalisz , invested by Polish army under voivode of Malbork Jakub Wejher , brother of Ludwik Weyher . A small Polish force ( between 200 and 500 men ) surprised a weakly guarded Swedish - Brandenburg cavalry camp at Lubrze in Greater Poland , near Śrem and Środa Wielkopolska , and 47 km south - east of the voivodeship capital of Poznań . According to Pierre des Noyers , who was a secretary to Her Majesty Polish Queen Marie Louise Gonzaga , in his letter dated September 17 , 1656 , Andrzej Karol Grudziński , commanding a host of 300 noblemen , was told by the local peasants about small Swedish command of 200 men in the village of Lubrze . He decided to attack them at night , in a surprise nocturnal action . First Poles annihilated the 60 horses strong night guard and then attacked the reminder of the enemy ' s command , the swiftness and confusion of the night attack disallowed Swedes and Brandenburgers to mount their horses . Throughout the night fighting Polish soldiers decimated the Swedish - Brandenburg division ( source vary from 800 to 2000 strong ) , both in the village and on the banks of a small stream where defenders took flight , killing between 500 to 800 officers and men ( entire command of 800 officers and men according to des Noyers ) , taking many prisoners including a Prussian colonel and his trumpeter , while the Swedish commander , Jan Wejhard von Wrzesowicz , was killed by the peasants while in flight from the battlefield . Since he was particularly hated by the local populace his body was left unburied for many days . According to Wawrzyniec Jan Rudawski , Polish period chronicler , the battle took place on the night of August 28 , 1656 . Rudawski states that the Swedes suffered following losses in officers : Majors Peter , Jan Otto de Walh , Hejder from the Saxon regiment . Majors Moritz , Frydryk Gros ( or Gross ) , Teyeh from the General Walch ' s regiment , Rotameister Weinland of the Nachtigall regiment ; important Swedish administrative Poznań official Kasper Fruchtland . Rudawski gives the following officer losses suffered by the Elector of Brandenburg / Prussia army : Major of Pfuhl ' s regiment Andreas Pauli , Rotameister of general Dorfling ' s regiment Peter Saks , Rotameister of count de Wilgenstein ' s regiment Baron Schwende , Rotameister Bretlar , Colonel acting as general major de Kanneberg , Commissar Godfryd Weiter . This Polish victory caused serious disruption for the Swedish hold on Central Poland . It forced the nominal possessor of Greater Poland , the Prussian - Brandenburg Elector , to reroute a sizable Prussian division under Derflinger , also marching towards Kalisz , to withdraw north to Toruń , after leaving commands at Poznań and Miedzyrzecz . Devoid of any hope of the relief forces the besieged Swedish garrison of Kalisz surrendered to the Polish army on November 8 , 1656 . Bibliography . Primary Sources Secondary Sources