Bektash Khan Gorji Sultan Murad IV Grand Vizier Tayyar Mehmed Pasha † Grand Vizier Kemankeş Kara Mustafa Pasha The recapture of Baghdad was the second conquest of the city by the Ottoman Empire as a part of the Ottoman–Safavid War of 1623–1639.

Baghdad, once the capital of Arab Abbasid Caliphate, was one of the most important cities of the medieval Muslim World.

In 1638 Ottoman Sultan Murad IV (Suleyman I's great-great-great grandson) decided to recapture the city.

According to the eyewitness account of Zarain Agha the Ottoman mobilization for the siege of Baghdad was 108,589 men composed of 35,000 infantry, in part Janissaries, and 73,589 cavalry.

According to historian Joseph von Hammer the Ottoman army covered this distance in 197 days with 110 staging stations in between.

During the siege the Safavids made sallies of around 6,000 men at a time, this was followed by a retreat into the city and a fresh 6,000 to attack.

[4] Although the defenders were given free passage to Persia, some resumed fighting after the capture of the city around Karanlık gate.