Syrian opposition
CJTF–OIR (2016–17)
The Deir ez-Zor Governorate campaign of the Syrian civil war consists of several battles and offensives fought across the governorate of Syria:
Syrian government
Hezbollah
Russia (since 2015)
Iran (since 2013)
PMF-affiliated militias
Iraq (since 2017, against ISIS only)
Other armed groups:
The rebel units in eastern Syria were originally largely independent and unorganized, until many accepted the authority of the National Coalition for Syrian Revolutionary and Opposition Forces (SNC) in late 2012. The authority of the SNC remained mostly nominal, however, and by late 2013 this alliance already began to disintegrate again.[25]
Over time, several units left the SNC alliance due to differences, and formed new, often more Islamist coalitions. Nevertheless, these new alliances generally remained allied with the council.
Besides the SNC and the allied Islamist coalitions, there were also number of radical jihadist groups active in Deir ez-Zor; though they normally also cooperated with other, more moderate rebels, they also worked with the Islamic State, especially in Deir ez-Zor's hinterland.[31][25]
Autonomous Administration of North and East Syria (since 2016)
International Freedom Battalion (IFB)
Foreign support:
Islamic State (IS)
Opposition
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Abu Ghanam