In 2014, Islamic State militants swept into Western Iraq's Anbar Province, overrunning Iraqi security forces, enslaving minorities, and causing thousands to flee for their lives. The jihadist group captured Iraq’s largest city, Mosul, and the cities of Ramadi and Fallujah, where hundreds of US troops died fighting the Islamic State’s predecessor. Now, two years later, the Iraqi security forces, with help from Iranian-supported Shiite militias and US military advisors and warplanes, are fighting to take back towns and cities in Anbar, one battle at a time. But it’s a difficult task: Anbar has been the crucible of Iraq’s insurgency, and is the country’s Sunni heartland — long marginalized by and hostile to the Shiite-led government in Baghdad. VICE News embedded with Iraq’s Golden Division Special Forces unit as they fought their way into the villages surrounding the city of Hit, where they encountered ambushes, sniper fire, and tried to sort suspected Islamic State operatives and sympathizers from innocent Iraqi civilians. Watch "What It's Really Like to Fight for the Islamic State” - http://bit.ly/1UhTYU1 Read "Iraq Halts Assault Against Islamic State-Held Fallujah to 'Protect Civilians' Trapped Inside” - http://bit.ly/1TQvKq7 Subscribe to VICE News here: http://bit.ly/Subscribe-to-VICE-News Check out VICE News for more: http://vicenews.com Follow VICE News here: Facebook: https://www.facebook.com/vicenews Twitter: https://twitter.com/vicenews Tumblr: http://vicenews.tumblr.com/ Instagram: http://instagram.com/vicenews More videos from the VICE network: https://www.fb.com/vicevideo