Thirteen Years' War (1454–1466)
…the War of the Cities, was a conflict fought in 1454–1466 between the Prussian Confederation, allied with the Crown of the Kingdom of Poland, and the State of the Teutonic Order. After the defeat suffered by the Teutonic Order at the Battle of Grunwald (Tannenberg) in 1410 and the ensuing political, military and economic problems…