Frederick William , Elector of Brandenburg and Duke of Prussia initially supported Supporting the estates in Royal Prussia , but allied Collaboration with Sweden in return for receiving Receiving the Duchy of Prussia as a Swedish fief .

Brandenburg left Departing the alliance with Sweden when granted Giving full sovereignty in the Duchy of Prussia by the Polish king in the treaties of Wehlau and Bromberg .

After the Swedish defeat Conquering at the Battle of Fehrbellin and a number of Danish triumphs at sea , the Swedish military was occupied Control retaining Preserving their tenuous hold Defending on dominions in Brandenburg and Pomerania .

The First Margrave War Hostile_encounter ( ) from 1449–50 was the result of disputes Quarreling between the Free Imperial City of Nuremberg and Albrecht III Achilles , Elector of Brandenburg .

Faced by a financial crisis , Sweden agreed Agree_or_refuse_to_act to remain Temporary_stay neutral in return for French subsidies , but became Becoming involved Cause_to_be_included in the 1675–1679 Scanian War with its regional rivals Denmark and Brandenburg .

Originally the knights moved Motion into the fortress as an ally of Poland against the Margraviate of Brandenburg .