Maarrat al-Nu'man
On Feb. 19 2018, the day after the merger, violent clashes erupted between the group and Tahrir al-Sham in the western Aleppo Governorate. The conflict soon spread to the Idlib Governorate where the SLF captured the city of Maarrat al-Nu'man, the towns of Ariha and Tramla, and the Wadi Deif military base from HTS on 21 February.