A small Polish force ( between 200 and 500 men ) surprised Change_sentiment a weakly guarded Bearing_arms 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 .

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 .

It forced Causation the nominal possessor of Greater Poland , the Prussian-Brandenburg Elector , to reroute Motion a sizable Prussian division under Derflinger , also marching Self_motion towards Kalisz , to withdraw Escaping north to Toruń , after leaving commands at Poznań and Miedzyrzecz .

It saw Motion the liberation of Kraków , Warsaw and Poznań .