One of the most famous standard-bearers of Kraków was Marcin of Wrocimowice (d. 1442) who carried the national banner in the Battle of Grunwald (Tannenberg) in 1410. The military unit ("chorągiew") that went to the battle under that banner comprised the elite of Polish knights, including such chivalrous celebrities as Zawisza the Black, which is a clear sign that the banner, described by the chronicler Jan Długosz as "the great banner of Kraków Territory", was also the insignia of the entire kingdom. During the course of the battle, according to Długosz, the national banner slipped out of Marcin's hand and fell to the ground, but it was quickly picked up and saved from destruction by the Polish army's most valiant knights, which further motivated the Poles to strive for victory over the Teutonic Knights.