The fight to retake Mosul, the biggest city in ISIS' so-called caliphate, lasted more than ten months and was the biggest urban battle since World War II. As civilians of Mosul endured the impossible choice of hiding in their homes or fleeing and running the risk of being killed by ISIS, the war raged on, destroying everything in its path. With unparalleled access, VICE followed the Iraqi army as it fought the terrorist group, room to room, house to house and street to street, often fighting for days on end and suffering horrendous casualties on a slow crawl to liberation.