When was the peace treaty signed based on which Teutonic Knights suffered only minimal territorial losses?
Polish–Lithuanian–Teutonic War:  While defeated, the Teutonic Knights withstood the siege on their capital in Marienburg (Malbork) and suffered only minimal territorial losses in the Peace of Thorn (1411). Peace of Thorn (1411):  It was signed on 1 February 1411 in Thorn (Toruń), one of the southernmost cities of the Monastic State of the Teutonic Knights.
i don't know