The inter-rebel conflict during the Syrian Civil War has continued throughout the Syrian Civil War as factions of the Syrian opposition and Free Syrian Army have fought each other, with shifting alliances among various Islamist factions such as Jabhat al Nusra, Ahrar al-Sham, Jaysh al-Islam and the Islamic Front.
The Army of Mujahideen was a Sunni Islamist rebel group formed in order to fight the Syrian government and the Islamic State of Iraq and the Levant (ISIL) during the Syrian Civil War. Originally a coalition of several Islamist rebel groups, it accused ISIL of disrupting "security and stability" in areas that had been captured from the Syrian government. During its establishment in January 2014, the spokesperson of the coalition said it would start operations in Idlib and Aleppo and gradually expand towards the rest of Syria. In December 2016, the Army of Mujahideen was briefly reorganized as Jabhat Ahl al-Sham, but this formation soon fell apart during rebel infighting in January 2017.
Liwa al-Haqq, is a Syrian Islamist rebel group that was active during the Syrian Civil War until joining Hayat Tahrir al-Sham in 2017.
Jund al-Aqsa, later known as Liwa al-Aqsa after 7 February 2017, was a Salafist jihadist organization that was active during the Syrian Civil War. Formerly known as Sarayat al-Quds, the group was founded by Abu Abdul 'Aziz al-Qatari as a subunit within the al-Nusra Front. The group later became independent, because al-Nusra was growing too rapidly for its resources and had suffered from fighting the Islamic State of Iraq and the Levant. On 20 September 2016 the U.S. Department of State designated Jund al-Aqsa as a terrorist organization. The group rejoined al-Nusra Front, by then renamed Jabhat Fateh al-Sham (JFS), in October 2016. However, on 23 January 2017, JFS declared that Jund Al-Aqsa was no longer part of Jabhat Fateh Al-Sham. In early February 2017, some of Jund al-Aqsa's units joined the newly formed Tahrir al-Sham, while the others refused and formed a new splinter group called Liwa al-Aqsa, and captured many towns in northern Hama and southern Idlib from other rebel groups. Following these attacks, Tahrir al-Sham launched a military operation against Liwa al-Aqsa, accusing them of being an ISIL affiliate. Following intense clashes with Tahrir al-Sham, up to 2,100 Liwa al-Aqsa militants left Idlib Province to join ISIL in Raqqa Province, by 22 February 2017.
Liwa Thuwar al-Raqqa was a rebel group in the Syrian Civil War. It was formed in September 2012 in the Raqqa Governorate. Aligned with jihadist factions for its first years, at the end of 2015, it joined the Syrian Democratic Forces. During an interview by Aymenn Jawad Al-Tamimi in 2015, Liwa Thuwar al-Raqqa's media director stated that the group wants a "civil democratic state". He also claimed that the group had no relations with the Syrian National Coalition based in Turkey.
The Northern Sun Battalion is an armed rebel group affiliated with the Free Syrian Army and part of the Syrian Democratic Forces that has been active during the Syrian Civil War.
The Nour al-Din al-Zenki Movement was a Sunni Islamist rebel group involved in the Syrian Civil War. In 2014, it was reportedly one of the most influential factions in Aleppo, especially the Western Aleppo countryside. Between 2014 and 2015, it was part of the Syrian Revolutionary Command Council and recipient of U.S.-made BGM-71 TOW anti-tank missiles. The Movement made multiple attempts to merge with the larger Islamist rebel group Ahrar al-Sham but were refused by Ahrar al-Sham's leadership. The Zenki Movement also made attempts to merge with other Islamist factions, Jaysh al-Islam and the Sham Legion. However, all merging efforts with these groups failed, leading to the Zenki Movement joining the Salafi Islamist Hayat Tahrir al-Sham (HTS) in 2017. But after a few months the group left HTS and within a year went to war with HTS by joining the Turkish-backed Syrian Liberation Front alongside Ahrar al-Sham on 18 February 2018. After a series of clashes in early 2019 Al Zenki were largely defeated by HTS, expelled to Afrin and absorbed in the Turkish-backed Syrian National Army.
The Levant Front is a Syrian rebel group based around Aleppo involved in the Syrian Civil War. It was formed in December 2014.
The Army of Revolutionaries, also known as Jaysh al-Thuwar, is a multi-ethnic armed Syrian rebel coalition that is allied with the primarily Kurdish People's Protection Units (YPG) and participating in the Syrian Civil War as part of the Syrian Democratic Forces (SDF).
Jaysh al-Salam was an operations room of Free Syrian Army factions that operated in northern and eastern Syria with the goal of attacking the Islamic State of Iraq and the Levant in Raqqa.
The Syrian Democratic Forces (SDF) is a Kurdish-led coalition formed by ethnic militias and rebel groups, and serves as the official military wing of the Autonomous Administration of North and East Syria (AANES). The SDF is allied to and supplied by the United States–led CJTF–OIR international alliance. Founded in 10 October 2015, the SDF claims that its mission is fighting to create a secular, democratic and federalised Syria. The SDF is opposed by Turkey, who claims the group has direct links to the PKK, which it recognizes as a terrorist group.
The Mu'tasim Division, formerly the Mutasim Brigade, is a Free Syrian Army faction active in the northern Aleppo Governorate, based in the town of Mare'. The group was named after al-Mu'tasim, an Abbasid caliph.
The western al-Bab offensive was a military operation launched by the Syrian Democratic Forces (SDF) against the Islamic State of Iraq and the Levant in the countryside of northwestern Aleppo Governorate, south of the towns of Mare' and Tel Rifaat.
The western al-Bab offensive was a multi-sided military confrontation between the Syrian Army, the Syrian Democratic Forces (SDF), other (Turkey-backed) FSA factions, and the Islamic State of Iraq and the Levant in the countryside of northwestern Aleppo Governorate, south of the towns of Mare' and Tel Rifaat.
The Idlib Governorate clashes , were military confrontations between Syrian rebel factions led by Ahrar al-Sham and their allies on one side and the al-Qaeda-aligned Jabhat Fatah al-Sham and their allies on the other. After 7 February, the clashes also included Jund al-Aqsa as a third belligerent, which had re-branded itself as Liwa al-Aqsa and was attacking the other combatants. The battles were fought in the Idlib Governorate and the western countryside of the Aleppo Governorate.
The Manbij Revolutionaries Battalion, also simply known as Manbij Revolutionaries, is a Syrian militia that is part of the Syrian Democratic Forces' Manbij Military Council and operates in the Aleppo Governorate. Members of the unit have declared that their primary goal is to drive the Islamic State of Iraq and the Levant (ISIL) from Syria, and to establish a democratic, inclusionist government in the country.
The Northern Democratic Brigade is a Free Syrian Army unit that is closely allied to the Syrian Kurdish YPG and YPJ in Afrin Region since 2014. Led by Absi Taha, Alexander Khalil, and Alexander Alaa, it also joined the Syrian Democratic Forces (SDF) in November 2015. The initial members of the group originated from Jabal Zawiya in Idlib, and it has recruited Arabs from Idlib, Aleppo, and other cities in northern Syria since allying with the YPG. Since joining the SDF, the unit has begun to operate across much of northern and eastern Syria, participating in operations against anti-SDF Syrian opposition factions, the Islamic State of Iraq and the Levant, the Turkish Armed Forces, and the Syrian National Army.
The Euphrates Liberation Brigade is a mostly Arab militia that operates as part of the Syrian Democratic Forces' Manbij Military Council (MMC) in the Syrian civil war.
Liwa Dawud was an armed group in the Syrian Civil War headquartered in Samrin in the Idlib Governorate and originated as a subunit in Suqour al-Sham then later became an independent faction then joined the Jaysh al-Sham coalition until 2014 when the group along with its leader defected to the Islamic State of Iraq and the Levant during the course of the Inter-rebel conflict during the Syrian Civil War.
Opposition–ISIL conflict during the Syrian Civil War started after fighting erupted between Syrian opposition groups and the Islamic State of Iraq and the Levant (ISIL). In early January 2014, serious clashes between the groups erupted in the north of the country. Opposition groups near Aleppo attacked ISIL in two areas, Atarib and Anadan, which were both strongholds of the fundamentalist Sunni organization. Despite the conflict between ISIL and other rebels, one faction of ISIL has cooperated with the al-Nusra Front and the Green Battalion to combat Hezbollah in the Battle of Qalamoun. By 2018.
Ahrar al-Sham [1] [ self-published source? ]
Army of Mujahideen 
Syrian Democratic Forces 
People's Protection Units 
Nour al-Din al-Zenki Movement 
Ansar al-Khilafah 
Syria 
Islamic State of Iraq and the Levant 