A rebellion of cities and nobles reshaped the map of medieval Prussia forever.
The Thirteen Years' War began as a civil uprising against the Teutonic Order, driven by economic frustration and a desire for Polish protection. What started as a local revolt against heavy taxes and restricted trade evolved into a protracted struggle that fundamentally altered the power dynamics of the Baltic region.
The conflict, spanning 1454 to 1466, pitted the Prussian Confederation—a coalition of nobility and Hanseatic cities—against the State of the Teutonic Order. By the mid-15th century, the Order’s rule had become increasingly anachronistic. Prussian towns, despite their rapid economic growth, faced stifling grain licenses and customs fees, while the nobility envied the broader political privileges enjoyed by their counterparts in the Kingdom of Poland. Tensions peaked in 1440 with the formation of the Prussian Confederation, which eventually sought the protection of King Casimir IV Jagiellon.
The war was characterized by a reliance on mercenaries and the Polish levée en masse, or conscripted noble army. Despite early successes in 1454, where the Confederation liberated most of Prussia, the tide turned following the Battle of Konitz in September 1454. The Teutonic Knights, though financially crippled and unable to pay their own mercenary forces, utilized skilled commanders like Heinrich Reuß von Plauen to reclaim territory. The Order’s inability to pay its troops eventually led to a bizarre situation where mercenaries seized castles and negotiated their sale to the Polish Crown.
The conflict concluded with the Second Peace of Thorn in 1466. The Teutonic Order was reduced to a Polish fief, and its Grand Masters were required to pay homage to the Polish King. Poland regained Pomerelia, which had been under Teutonic control since 1308, and annexed the Prince-Bishopric of Warmia. Together, these territories formed Royal Prussia. While the war ended the Order's absolute sovereignty, it did not immediately bring peace; the subsequent War of the Priests highlighted the lingering disputes over independence and the revision of the treaty terms, marking the end of an era of Teutonic dominance in the region.
Source: Thirteen Years' War (1454–1466)
