[18] Ahmad al-Nemeh formed the Daraa Military Council and was subsequently captured and tortured by Nusra as the latter threatened to arrest any member of this new coalition.

[19] During the Quneitra offensive (June 2015), the Southern Front rejected any cooperation with al-Nusra, the Army of Conquest therefore participated in the operation separately.

[22] On 22 December 2015, the al-Nusra Front attacked the headquarters of the Central Division at the Bab al-Hawa Border Crossing, resulting in clashes.

[25] SOHR claimed that Jund al-Aqsa joined the conflict and established checkpoints in support of JaN.[26] According to the 13th Division's media wing, their position was overran and 4 of their fighters were killed.

[30] On 5 April 2017, a vehicle carrying 2 Free Idlib Army commanders came under fire from Hayat Tahrir al-Sham fighters at a checkpoint near Khan al-Subul, which was under complete control of HTS.

[34] Later that day, a ceasefire agreement was signed between the Free Idlib Army and Tahrir al-Sham in the town and the latter ordered the 13th Division to be disbanded.

[35] On 17 March 2016 Jund al-Aqsa members attempted to hold a mourning service at a tent for the death of an ISIL commander in Sarmin, Idlib Governorate.

[43] In January 2017, the al-Nusra Front launched several coordinated attacks against Ahrar al-Sham headquarters and positions in the northern Idlib Governorate, near the Bab al-Hawa Border Crossing.

[47] In December 2013, the Islamic Front, mainly composing of Ahrar ash-Sham, took over several bases at the Bab al-Hawa Border Crossing from the Supreme Military Council and removed the FSA's revolutionary flags.

The defectors condemned the Islamic Front's Islamist and sectarian practices, especially against Christians and Alawites who initially supported the opposition.

[50] In late November 2015, clashes took place between the Army of Revolutionaries, supported by the YPG, and the FSA-dominated Mare' Operations Room in the northern Aleppo Governorate, backed by Ahrar ash-Sham and the al-Nusra Front.

[51] In December the conflict between the Syrian Democratic Forces, mainly composing of the YPG and the Army of Revolutionaries and the Mare' Operations Room escalated in northern Aleppo.

The latter called on Jaysh al-Thuwar to leave the SDF and sever relations with the PYD, while the former accused the latter of being led by Ahrar ash-Sham and Nusra.

[52] On 26 March 2016, Ahrar ash-Sham ordered the anti-YPG Kurdish FSA group Liwa Ahfad Saladin to remove the flag of Kurdistan from their posts and threatened military action if they did not.

[54] In early March 2016 Jaysh al-Islam clashed with the al-Rahman Legion in Zamalka, Markaz Rif Dimashq District.

[61] On 2 November 2016, during the Aleppo offensive, Fastaqim Union fighters captured a military commander of the Nour al-Din al-Zenki Movement.

[62] The next day, the Levant Front and the Abu Amara Brigades began to patrol the streets to arrest any rebels taking part in the clashes.

[66] On 8 August 2017, clashes erupted between the Sham Legion and the Islamic Freedom Brigade on Turkmen Mountain in the northern Latakia countryside.

[67] On 14 November 2016, the Levant Front and the Sultan Murad Division clashed at the Azaz border gate with Kilis, Turkey.

[69] On 14 May 2017, two separate clashes in Jarabulus and Gandura pitted the Ahrar al-Sharqiya Brigade against the Sultan Murad Division and the Sham Legion.

The Levant Front accused the Sham Legion of conspiring with the Nour al-Din al-Zenki Movement, part of Tahrir al-Sham.

The FSA factions accused the Revolutionary Knights Brigade of affiliation to the Nour al-Din al-Zenki Movement and Tahrir al-Sham and partaking in smuggling, looting, extortion, and abuses of civilians.

Tensions between the two groups took place since March 2016, when the Rahman Legion expelled Jaysh al-Islam in Zamalka after absorbing the Ajnad al-Sham Islamic Union in February.

A ceasefire was declared in April, by which time SLF and its allies had conquered considerable territory in Idlib and Aleppo provinces.

However, fighting between the two groups began once again in January 2019, whereby Tahrir al-Sham captured the northern town of Darat Izza and moved to envelop the Nour al-Din al-Zenki (part of the SLF) stronghold east of Aleppo city.