Ka kammala wannan magana: A watan Janairu na shekara ta 1656, Charles X Gustav na Sweden ya naɗa Frederick William I, Elector na Brandenburg, a matsayin mai mulkinsa na Duchy na Prussia. A lokacin yarjejeniyar Marienburg, ra'ayin Sweden a cikin yaƙin ya ragu, kuma Charles X Gustav ya yarda ya ba Frederick William I lada don yaƙi a gefensa. Duk da yake wannan na ƙarshe ya kasance mai bautar Sweden ga Prussia, an yi masa alƙawarin ikon mallakar gado a cikin voivodeships huɗu na Greater Poland don musayar shiga cikin kamfen ɗin Poland na Charles X Gustav. Wannan kawancen ya tabbatar da nasara a cikin yakin da ya biyo baya
Yaƙin Warsaw, amma yayin da ƙarin kamfen suka tsaya, Frederick William I zai sami cikakken ikon mallaka a Prussia ta Yarjejeniyar Labiau a watan Nuwamba 1656.