For a list of all Polish-German Wars, see Polish-German Wars.The War of the Priests (1467–1479, German: Pfaffenkrieg, Polish: wojna popia, wojna księża) was a conflict in the Polish province of Warmia between the King of Poland Casimir IV and Nicolaus von Tüngen, the new bishop of Warmia chosen – without the king's approval – by the Warmian chapter.
The Bishopric of Warmia was, in the 14th century, part of the Monastic State of the Teutonic Knights, but enjoyed autonomy and was administrated as a prince-bishopric.
Unable to get the pope's approval for Kiełbasa, Casimir changed tack and nominated Andrzej Oporowski, his chancellor, as bishop (Tüngen was to receive the Bishopric of Kamień).
In 1476 Corvinus invaded southern Poland and a year later Heinrich Reffle von Richtenberg, the grand master of the order, refused to provide military support to Casimir, his sovereign.
In 1477 Martin von Wetzhausen, the new grand master of the order refused to make his oath of fealty to the Polish king and invaded Warmia, taking Chełm and Starogard Chełminski.
The Polish king accepted Nicolaus von Tüngen, who had been elected in 1467, as bishop, and granted or confirmed several prerogatives of the bishopric.