 After a long trek to Albania he eventually captured Krujë by forging a letter from the Sultan to the Governor of Krujë, which granted him control of the territory.After capturing the castle, Skanderbeg abjured Islam and proclaimed himself the avenger of his family and country.He raised a flag showing a double-headed eagle, an ancient symbol used by various cultures of Balkans (especially the Byzantine Empire), which later became the Albanian flag.