Alexios I Komnenos vs Rudolf I of Germany

Alexios I Komnenos was defeated by the Norman army under Robert Guiscard at Dyrrhachium. The Byzantine forces were routed, and Alexios barely escaped. This loss allowed the Normans to occupy much of the western Balkans, though Alexios later recovered some territory.

Alexios I implemented a series of reforms to restore Byzantine power. He reorganized the army by relying more on foreign mercenaries, reformed the currency (the hyperpyron), and granted tax exemptions to the Church. These measures stabilized the empire after decades of decline.

Alexios I sent envoys to Pope Urban II at the Council of Piacenza, requesting military aid against the Seljuk Turks. This appeal contributed to Urban's call for the First Crusade at the Council of Clermont later that year, initiating the Crusader movement.

Alexios I cooperated with the Crusader army to besiege and capture Nicaea from the Seljuk Turks. The city was surrendered to Byzantine control, and Alexios used the Crusaders to recover key territories in Anatolia, though tensions later arose over land claims.

Rudolf I was elected King of Germany by the prince-electors, ending the Great Interregnum. He was the first Habsburg to hold the German throne. His election restored stability to the Holy Roman Empire after a period of civil war and weak central authority.

Rudolf I formally renounced all imperial claims to the Papal States and recognized the temporal authority of the Pope. He also agreed to lead a crusade (which never materialized). This improved relations with the papacy and secured papal support for his rule.

Rudolf I defeated King Ottokar II of Bohemia at the Battle on the Marchfeld in Austria. Ottokar was killed in the battle. Rudolf then secured the duchies of Austria, Styria, and Carniola for the Habsburg dynasty, laying the foundation for their future power.

Rudolf I formally enfeoffed his sons Albert and Rudolf with the duchies of Austria and Styria at the Diet of Augsburg. This established the Habsburgs as a major territorial power in Central Europe. The grant was later confirmed by the imperial princes.