Jaysh al-Salam

Jaysh al-Salam (جيش السلام; "Army of Peace") is an operations room of Free Syrian Army factions that operates in northern and eastern Syria with the goal to attack IS in ar-Raqqah. The group later joined the Syrian Democratic Forces which participated in an offensive in northern Raqqa.

Jihad in the Path of God Brigade
The Jihad in the Path of God Brigade is a rebel group that operated in eastern Aleppo Governorate. It is currently fighting the Islamic State of Iraq and the Levant in eastern Aleppo province. The group acknowledges the Syrian opposition-in-exile government the Syrian National Council and the Supreme Military Council. The Jihad in the Path of God Brigade was reported to be part of the Euphrates Volcano operations room in late September 2014; it released a statement indicating that it was not affiliated with it.

Liberation Brigade
Liwa al-Tahrir or the Liberation Brigade is a FSA-affiliated rebel group that was formed in the city of Ras al-Ayn, part of the northern Hasakah Governorate, in September 2014. Led by major general Abdul Karim Obeid, a former commander of the Farouq Brigades, the group joined the Euphrates Volcano operations room in coordination with the YPG soon after its formation. In mid-2015 Liwa al-Tahrir participated in the Tell Abyad offensive and jointly controlled the border crossing with Akçakale.

In September 2016 tensions flared up between the YPG and Liwa al-Tahrir due to the perceived margination of FSA and Arab components of the Syrian Democratic Forces. Liwa al-Tahrir also refused to fight the Turkish Armed Forces and its allies during the Jarabulus offensive. In a video message to the United States, the group's commander called for the SDF to be reformed into an united army under the authority of the United States Central Command and threatened to leave the SDF and withdraw from Tel Abyad if the YPG continued to dominate the coalition. As a response, the YPG imposed a blockade on the villages controlled by the group. Hours later, Abdul Karim Obeid and dozens of his fighters crossed from Tel Abyad into Turkey and defected to the Turkish Army. 50 of them arrived in Jarabulus and defected to pro-Turkish rebels fighting the SDF.