Poland (Jagiellonian Era)

The King Survives
Władysław III of Poland (King Vladislaus I of Hungary) leads his forces against the infidel. Ottoman forces were advancing east to the Christian garrison in Varna. Despite the combined coalition (Poles, Hungarians, Bohemians, Croats, Italians and more alike), the Christian Crusaders were unable to fight back the technologically superior Ottoman forces. The Janissaries were a unit type that completely outclassed the defenders, and in just one day the Turks crush the opposition. The Christians put everything into this battle; it was planned that the Italian's fleet would bring the army to Constantinople, where they would continue to push the Ottomans out of Europe. Unlike OTL, Władysław is not beheaded in his charge. Instead, he manages to retreat on horseback north to Wallachia. The Battle of Varna, like in OTL, is won by the Ottomans. The Christian coalition fails in it's Crusade for Varna. The gateway for further Ottoman Expansion into the Balkans was now possible.

The Succession is Safe
Disgraced and humiliated, Władysław returns to Hungary. Learning about the defeat, the people had mixed feelings about their king.