Battle of Baiji (2014–2015)
The Battle of Baiji took place in Baiji, Iraq, lasting from late October 2014 to late October 2015. In mid-November 2014, Iraqi forces retook the city of Baiji, and re-entered the Baiji Oil Refinery.
Source: Wikipedia — Battle of Baiji (2014–2015) (CC BY-SA 4.0)