Orhan's Accession as Ottoman Sultan (1326)

Timeline

1. 1323–1326Sige(t) · AnatoliaIn his later years Osman I entrusted state affairs to his son Orhan. Traditional chronicles link Osman's death with the fall of Bursa; the exact year is disputed between 1323 and 1326, but 1326 is generally regarded as the landmark year of Orhan's full assumption of power.
2. 1326Bursa · BithyniaAfter the fall of Bursa, Orhan publicly established himself as supreme ruler of the Ottomans in the city, distributing spoils and lands and appointing military commanders and administrative officials. Some sources record that he thereafter used the title 'sultan,' signifying a status beyond that of an ordinary Turkic bey.
3. 1326–1330Northwestern Anatolia · AnatoliaAfter accession, Orhan formed a standing army (including the precursors of the famous Yaya and Akıncı corps), minted the first Ottoman coins, and continued advancing toward Nicaea, Üsküdar, and other directions. His reign laid the foundation for Murad I's further institutionalization.