November 1443 - January 1444: The “long campaign” (crusading operations against Niš and Sofia and clashes in the passes of Zlatitsa and Kunovitsa).
12 June 1444: Truce of Adrianople.
August 1444: The Crusaders’ fleet assembles at the Bosporus.
September - November 1444: Fighting between Crusaders and Ottomans along the Orşova - Varna route.
10 November 1444: Battle of Varna.