Gollub War The Gollub War was a two - month war of the Teutonic Knights against the Kingdom of Poland and the Grand Duchy of Lithuania in 1422 . It ended by signing the Treaty of Melno , which resolved territorial disputes , dragging since 1398 , between the Knights and Lithuania over Samogitia . Background . The First Peace of Thorn of 1411 had ostensibly ended conflicts between the warring powers of the Polish - Lithuanian – Teutonic War , although the border between Samogita and Prussia was not determined . Poland also contested Pomerania , Pomerelia , and " Culmerland " ( Chełmno Land ) . When numerous attempts at negotiations failed , a brief Hunger War broke out in summer 1414 . Since Poles and Lithuanians were unable to capture strongly fortified Ordensburg en of the Knights , parties agreed to mediate their dispute in the Council of Constance . The Council established Samogitian Diocese in Varniai and appointed Matthias of Trakai as its first bishop . However , it did not solve the underlying territorial disputes by the time it ended in 1418 . A new , but futile , round of negotiations started in May 1419 in Gniewków with papal legate Bartholomew Capri , archbishop of Milan , as mediator . The dispute was then passed to Sigismund , Holy Roman Emperor for further mediation . On January 6 , 1420 in Wrocław the emperor delivered his decision that Peace of Thorn was valid and fair . That meant that Samogitia belonged to Lithuania only for the lifetime of Vytautas the Great , Grand Duke of Lithuania , and Jogaila , King of Poland . After their deaths Samogitia was to return to the Teutonic Knights . Other territorial claims were also rejected . The emperor granted the Knights even more rights than they demanded in negotiations . This decision was probably influenced by the fact that Sigismund hoped to receive support from the Teutonic Knights in his war with the Hussites , who were supported by Vytautas . Vytautas and Jogaila categorically refused to accept this decision . Jogaila unsuccessfully appealed to the Pope Martin V . The war . In July 1422 , the Emperor Sigismund and the Teutonic Knights devoted resources to a war against the Hussites , who attacked and devastated large parts of Germany . The pope called for strong measure to ' get rid of this plague ' . Vytautas and Jogaila used the pre - occupation with defense against the Hussite raids by attacking Prussia and the Order . Teutonic Grand Master Michael Küchmeister von Sternberg was forced to resign in March . His successor Paul von Rusdorf released most of the hired mercenaries ; the Order was left with very few soldiers to defend itself . Joint Polish and Lithuanian forces marched north to Osterode , Teutonic forces retreated to Löbau . When it became clear that siege engines would not arrive , Jogaila ordered an advance towards the Order ' s fortified capital of Marienburg . His army captured Riesenburg and pillaged surrounding villages . Heading south to Chełmno Land , the Poles and Lithuanians then captured Gollub , but failed to take Schönsee . Jogaila decided to end the war quickly before the overwhelmed Prussian troops of the Order could receive reinforcements from the Holy Roman Empire that Paul von Rusdorf had requested . A truce was signed on September 17 , 1422 , and the war concluded ten days later with the Treaty of Melno . This ended the territorial disputes and fights between Lithuania and the Teutonic Knights . Poland however resumed fighting with the order once again in 1431 – 1435 when the Order supported Švitrigaila and not Polish - backed Sigismund Kęstutaitis as the successor of Vytautas .