On April 9, 1241, the Mongol Empire's forces, led by Batu Khan and Subutai, defeated a coalition of Polish, German, and Teutonic knights at the Battle of Legnica (Liegnitz) in present-day Poland. This battle was a part of the Mongol invasion of Europe and resulted in the devastating defeat of the European forces. The Mongols subsequently withdrew from Poland and Hungary, but the battle left a lasting impression of terror and destruction in the Christian West.

The Battle of Legnica was a traumatic event that entered the chronicles and folklore of Eastern Europe, often depicted as a clash between Christian civilization and the pagan Mongol horde. Accounts of the battle, such as those by the Cistercian chronicler Jan Długosz, emphasized the heroism of the defeated knights and the supernatural forces that seemed to aid the Mongols. This event influenced the development of medieval Polish literature and contributed to the apocalyptic themes prevalent in European poetry and chronicles of the period.