During John Hunyadi's campaign in Niš in 1443, Skanderbeg and a few hundred Albanians defected from the Turkish ranks; for twenty-five years he scored remarkable victories against the Ottomans. He adopted the similar Byzantine imperial flag, with the double-headed eagle and the red background, and his victories brought him the papal title "Athleta Christi". The eagle was used for heraldic purposes in the Middle Ages by a number of noble families in Albania and became the symbol of the Albanians. The Kastrioti's coat of arms, depicting a black double-headed eagle on a red field, became famous when he led a revolt against the Ottoman Empire resulting in the independence of Albania from 1443 to 1479. This was the flag of the League of Lezhë, which was the first unified Albanian state in the Middle Ages and the oldest representative political body in the country with extant records.