Battle of Mosul (2016–17)

Battle of Mosul (2016–17) was a major military campaign launched by the Government of Iraq, with international support, to recapture the city of Mosul from the Islamic State of Iraq and the Levant (ISIL). The operation, which began in October 2016, involved a complex, nine-month offensive combining Iraqi Army troops, federal police, the Counter-Terrorism Service, Kurdish Peshmerga, and various Popular Mobilization Forces militias, backed by extensive United States Air Force and coalition airstrikes. The battle concluded in July 2017 with the liberation of the city, marking a decisive defeat for ISIL's territorial control in Iraq but leaving Mosul devastated and its population deeply traumatized.

Background

The battle's origins trace to the Fall of Mosul in June 2014, when a surprise offensive by Islamic State of Iraq and the Levant fighters overwhelmed Iraqi Army divisions, leading to the capture of Mosul and the declaration of a caliphate by Abu Bakr al-Baghdadi. This event dramatically escalated the War in Iraq (2013–2017) and prompted the formation of the American-led intervention in Iraq (2014–2021). Following the successful Battle of Ramadi (2015–16) and the Siege of Fallujah (2016), the Government of Iraq, under Prime Minister Haider al-Abadi, identified Mosul as the strategic and symbolic priority for dismantling ISIL's hold in the country.

Preparations and forces

Planning for the offensive, codenamed "Operation We Are Coming, Nineveh," involved extensive coordination between the Iraqi Armed Forces, the Kurdistan Regional Government's Peshmerga, and the United States Central Command. The ground force, exceeding 100,000 personnel, was organized into the Iraqi Counter-Terrorism Service (the elite Golden Division), the Iraqi Army's 9th Armoured Division, federal police, and various units from the Popular Mobilization Forces. The International military intervention against ISIL, including key contributions from the United States Air Force, the Royal Air Force, and French Air and Space Force, provided crucial air support, intelligence, and embedded advisory teams. ISIL defenses, commanded by figures like Abu Abdulrahman al-Bilawi, consisted of an estimated 5,000–12,000 fighters who constructed extensive tunnel networks, laid thousands of IEDs, and used human shields.

The battle

The offensive commenced on 16 October 2016 with a multi-pronged advance. Initial phases saw Peshmerga forces and Iraqi Army troops encircling the city from the east, north, and south, securing key towns like Bartella and Bashiqa. The push into Mosul's eastern districts, led by the Golden Division, began in November, facing fierce street-by-street resistance. By late January 2017, Iraqi forces declared eastern Mosul liberated and launched the assault on the more densely populated western half, crossing the Tigris River. The final and most brutal stage focused on the Old City of Mosul, culminating in the destruction of the historic Al-Nuri Mosque by ISIL in June and the declaration of victory by Haider al-Abadi on 10 July 2017.

Aftermath and impact

The victory at Mosul effectively ended ISIL's era of controlling major urban centers in Iraq, severely degrading its capabilities and paving the way for subsequent operations like the Battle of Tal Afar (2017). Politically, it bolstered the stature of Haider al-Abadi but exposed tensions between Baghdad and Erbil, later erupting into the 2017 Iraqi–Kurdish conflict. The United Nations and international aid agencies faced a monumental humanitarian crisis, with widespread displacement and a city requiring years of reconstruction. The battle also intensified scrutiny of the conduct of various Iraqi forces and the long-term integration of the Popular Mobilization Forces.

Casualties and destruction

The battle was extraordinarily costly. Iraqi security forces and the Peshmerga suffered several thousand killed and many more wounded. Coalition casualties were minimal. ISIL fighter deaths were estimated in the thousands. Civilian casualties were catastrophic, with groups like Amnesty International documenting thousands killed by both ISIL atrocities and coalition airstrikes, notably in incidents like the Mosul airstrike of March 2017. The physical destruction in neighborhoods like the Old City of Mosul was compared to the Battle of Aleppo (2012–2016), with critical infrastructure, cultural heritage sites, and over 138,000 homes damaged or destroyed, creating one of the most severe urban devastation episodes since the Second World War. Category:Battles of the War in Iraq (2013–2017) Category:Mosul Category:2016 in Iraq Category:2017 in Iraq