Pedzisa mutsara unotevera: Muna 1672, Hondo yeFrench-Dutch yakatanga, neBrandenburg-Prussia ichibatanidzwa seshamwari yeDutch Republic. Chibvumirano ichi chakavakirwa pachibvumirano cha1669, uye chakaguma nokutora kweFrance kweBrandenburg-Prussian Cleves. Muna June 1673, Frederick William akasiya mubatanidzwa weDutch ndokupedzisa chibvumirano chemubatsiro neFrance, iyo yakabva yasiya Cleves. Apo Umambo Hutsvene hweRoma hwakazivisa hondo kuFrance, inonzi "Reichskrieg", Brandenburg-Prussia yakachinjazve mativi ndokubatana nemauto ehurumende. France yakamanikidza mubatanidzwa wayo Sweden kumununura kupfurikidza nokurwisa Brandenburg-Prussia kubva kuchamhembe. Charles XI weSweden, achivimba nemari yeFrance, akabata Uckermark yeBrandenburg muna 1674, achitanga hondo yeGerman yeScanian War (Brandenburg-Swedish War). Frederick William akaita nokukurumidza nokufora mauto ake kubva kuRhine kuenda kuchamhembe kweBrandenburg, uye akasangana nechokumashure kweuto reSweden, iro rakanga riri mukuyambuka matope, mu
Hondo yeFehrbellin (1675). Kunyange zvazvo kwaiva kurwisana kuduku kubva mumaonero ehondo, kukunda kwaFrederick William kwakava kwokufananidzira kukuru. "Great Elector" akatanga kurwisa, achitevera mauto eSweden aidzokera shure kuburikidza neSweden Pomerania.