[6] The three groups comprising the coalition are Hayat Tahrir al-Sham, the Turkish-backed National Front for Liberation, and Jaysh al-Izza.

[7] In October 2020, HTS and two leading factions from the NLF began to finalize the creation of a Unified Military Council in Idlib.

[12] On 8 June al-Fateh al-Mubin operations room advanced into several areas north of Hama and cut the road between the town of Maharda and Skaylbia.

[12] On 16 June, the Syrian Observatory on Human Rights (SOHR), a UK-based monitor, reported that the factions repulsed an attack on their positions at the Tal Meleh axis.

[22] On 28 July 2019 the operations room suffered major setbacks after the Syrian Army recaptured Tal Meleh and Jubbayn, reversing all their gains.

[25] The Fateh Mubin operations room lost several key areas including the strategic city of Khan Shaykhun[26] and was forced out of northern Hama.

[27] In December 2019 after renewed airstrikes on rebel-held areas, opposition sources announced the Syrian Army was planning to restart its Idlib offensive.

[32] Following the reopening of the M5 highway to pro-government forces, the Syrian Army launched an attack on the Aleppo axis, seizing most rebel held areas of the province.

[36][37] On 1 March The opposition factions also carried out a counterattack on the Al-Ghab Plain where the Syrian army had been advancing, halting the offensive there and retaking several towns.

[45] On 26 June 2020, following a conflict with the Guardians of Religion Organization, Hayat Tahrir al-Sham declared Fateh Mubin the only legal coalition in rebel-held Idlib and barred the creation of any other military operation rooms.

They also repelled an attempt by the Syrian army to infiltrate the al-Fterah area,[48] and destroyed a military bulldozer on the Dadikh village frontline.

[50] During early July 2020, SOHR reported clashes and shelling of positions between al-Fateh al-Mubin and pro-government forces took place, as the Syrian Army sent reinforcements to the front lines in Idlib.

[54] Skirmishes and clashes between the operations room and the Syrian Army continued over the course of the year, with the ceasefire agreed to in March regularly being broken with shelling and infiltration attempts.