 The Sultan, having accepted his submissions, obliged him to pay tribute and to ensure the fidelity of local rulers, Gjergj Kastrioti and his three brothers were taken by the Sultan to his court as hostages.Gjergj Kastrioti Skanderbeg was distinguished as one of the best officers in several Ottoman campaigns both in Asia Minor and in Europe, and the Sultan appointed him General.On 28 November 1443, Skanderbeg saw his opportunity to rebel during a battle against the Hungarians led by John Hunyadi in Niš as part of the Crusade of Varna.