Hunyadi accompanied the young King to Prague and concluded a treaty with Ulrich Eizinger (who had expelled Ulrich of Celje from Austria) and George of Poděbrady at the end of the year. Having returned to Hungary, Hunyadi convoked, in the name of the King but without his authorization, a Diet in order to make preparations for a war on the Ottomans who had in May 1453 captured Constantinople. The Diet ordered the mobilization of the armed forces and Hunyadi's position of supreme commander was confirmed for a year, but many of the decisions was never carried out. For instance, the Diet obliged all landowners to equip four cavalrymen and two infantrymen for every hundred peasant households on their domains, but this law was never applied in practise.