November 2015 Sinjar offensive
The November Sinjar offensive was a combination of operations of Kurdish Peshmerga, PKK, and Yezidi militias in November 2015, to recapture the city of Sinjar from the Islamic State of Iraq and the Levant. It resulted in a decisive victory for the Kurdish forces, who expelled the ISIL militants from Sinjar and regained control of Highway 47, which until then had served as the major supply route between the ISIL strongholds of Raqqa and Mosul.
Source: Wikipedia — November 2015 Sinjar offensive (CC BY-SA 4.0)