Hay'at Tahrir al-Sham was a Sunni Islamist political organisation and paramilitary group involved in the Syrian civil war. It was formed on 28 January 2017 as a merger between several armed groups: Jaysh al-Ahrar, Jabhat Fateh al-Sham, Ansar al-Din Front, Jaysh al-Sunna, Liwa al-Haqq, and the Nour al-Din al-Zenki Movement. From Wikipedia
