Battle to retake Mosul from IS begins Iraqi forces have begun an operation to recapture the city of Mosul, the last stronghold in the country of the so-called Islamic State Areas of control Iraqi government Kurds Islamic State (IS) Mosul Dam Tigris River Tal Afar Mosul battle expected to involve nearly 30,000 Iraqi and Kurdish troops, supported by U.S.-led coalition airstrikes Mosul Baghdad IRAQ 300km 200 miles Badush NINEVEH PROVINCE Qayyarah Qayyarah Air Base: Logistical base and collecting point for Iraqi forces Around 4,000 Kurdish Peshmerga forces in tanks, heavily-armoured Humvees and other troop carriers advancing toward Bartella area Tall Kayf Mosul Hamma al-Alil IRAQ Zlican Camp Bashiqa airfield Bashiqa Bartella Bakhdida Nimrud Kalak Makhmur 20km 12 miles Source: Institute for the Study of War