August - Battle of Jalowaz: Murad II is defeated, and forced to abdicate in favor of his son Mehmed II .
August 26 - Old Zürich War - Battle of St. Jakob an der Birs: Charles VII of France, seeking to send away troublesome troops made idle by the truce with England, sends his son the Dauphin with a large army into Switzerland to support the claims of Emperor Frederick III. The massively outnumbered Swiss force is destroyed in this battle, but inflict such casualties on the French that they withdraw.
November 10 - Battle of Varna: The crusading forces of King Ladislas of Poland and Hungary are crushed by the Turks under Sultan Murad II. Ladislas is killed.