The Battle of Varna: A Missed Opportunity to Save Byzantium
King Władysław at the Battle of Varna, as imagined by Jan Matejko. Wikipedia After the Hungarian Crusade of 1217 the 1444 Crusade was certainly the largest military undertaking of the medieval Kingdom of Hungary. In January 1444, Pope Eugene IV (reigned 1431–1447) proclaimed a new crusade to help Eastern Christians, not least to establish the ecclesiastical union agreed by the Byzantine Emperor John VIII Palaiologos (r. 1425–1448) at the Council of Florence in 1439. This union, which had been concluded with great difficulty between the Byzantine Patriarch and the Roman Pontiff, was conditional on the launch of the promised crusade, and this was obvious to both the Pope and Cardinal Cesarini, his legate in Hungary. In Europe, it was logical to think that a campaign could significantly weaken the Turks while fighting the Karamanids, their eastern adversaries. The Europeans were not mistaken, the Sultan was indeed engaged in a campaign against the Karamanids and left Europe in the early s...