Global War on Terror (2001-present)
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Apr 20, 2026
The Fall of Mosul 2014: How 30,000 Iraqi Soldiers Ran from 800
1 min read · Intermediate
ISISMosulIraq military2014
The fall of Mosul, June 2014. Around 800 ISIS fighters routed 30,000 Iraqi soldiers in two days, capturing Iraq's second-largest city. The collapse exposed the fragility of the post-2003 Iraqi state and allowed ISIS to declare its caliphate.↗
On June 10, 2014, ISIS attacked Mosul, Iraq's second-largest city. The Iraqi military forces numbering 30,000 collapsed and fled. ISIS forces estimated at under 1,000 took the city in days. The collapse shocked Washington and accelerated American re-engagement.
ISIS attacked Mosul on June 10, 2014, with 800-1,500 fighters. The 2nd Iraqi Infantry Division with 30,000 troops should have repelled them easily. Instead, they fled over days, abandoning weapons, vehicles, and equipment.
The military collapse was so complete it seemed inexplicable. Corruption and demoralization plagued the Iraqi military. Officers prioritized salaries over training. Soldiers went unpaid for months. Sunni soldiers felt like outsiders in a Shiite-dominated military with no stake in defending a Shiite government.
Shiite militias infiltrated the military. The division commander proved incompetent or cowardly. ISIS's attack was sophisticated and coordinated. Most critically, the Iraqi soldiers had no will to fight.
The collapse had immediate consequences. ISIS suddenly controlled 1.5 million people and the city's military and economic resources. Combined with Syrian territory, ISIS had a caliphate, capital, cash, and American weapons. The war that was supposed to be over was beginning again.
President Obama faced re-engagement pressure. By August 2014, airstrikes began. By September, Operation Inherent Resolve was formally launched.
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