The Sword of Persia: Nader Shah, from Tribal Warrior to Conquering Tyrant "This battle broke Ottoman control over this part of western Persia. The Ottoman governor of Hamadan quit the city and withdrew to Baghdad. Nader marched into Hamadan unopposed ... Shortly afterwards, after some more fighting, Nader's troops marched into Kermanshah and secured the entire province ... He rested his men for a month in Hamadan but, impatient to finish the job, set out northwards on 17 july 1730 to eject the Ottomans from Azerbaijan and reconquer Tabriz."