Deir ez-Zor is the largest city in eastern Syria and the seventh largest in the country. Located on the banks of the Euphrates River 450 km (280 mi) to the northeast of the capital Damascus, Deir ez-Zor is the capital of the Deir ez-Zor Governorate. In the 2018 census, it had a population of 271,800.
The Arab Socialist Movement also known as Arab Socialist Party, was a political party in Syria that has split into several factions since the 1960s which continue to use the same name.
The Air Force Intelligence Directorate was the intelligence service of Ba'athist Syria from 1963 until 2024, owing its importance to Hafez al-Assad's role as the Air Force commander. Despite its name, it was mainly involved with issues other than air force intelligence, and took an active part in the suppression of the Muslim Brotherhood rebellion in the 1980s. Agents of this service have frequently been stationed in Syrian embassies or branch offices of the national airline.
The Military Intelligence Directorate was the military intelligence service of Ba'athist Syria until 2024. Although its roots go back to the French mandate period, its current organization was established in 1969. Its predecessor organisation was called the Deuxième Bureau. It was headquartered at the Defense Ministry building in Damascus. The military intelligence service, or the Mukhabarat in Arabic, was very influential in Syrian politics.
Protests against the Syrian government and violence had been ongoing in the Syrian city of Deir ez-Zor since March 2011, as part of the wider Syrian Civil War, but large-scale clashes started following a military operation in late July 2011 to secure the city of Deir ez-Zor. The rebels took over most of the province by late 2013, leaving only small pockets of government control around the city of Deir ez-Zor.
Jassem Alwan was a Syrian military officer and prominent military figure in Syria in the early 1960s. He rose to prominence during the period of the United Arab Republic (UAR) when he served as the Commander of the Qatana Base near Damascus. Alwan, a staunch supporter of UAR President Gamal Abdel Nasser, opposed Syria's secession from the union in 1961, leading two failed coup attempts to overthrow the secessionist government in 1962.
The Syrian Resistance, formerly known as the Popular Front for the Liberation of the Sanjak of Iskandarun, is a Marxist-Leninist pro-Assad militia that operated in northwest Syria in support of the Ba'athist regime during the civil war.
A number of states and armed groups have involved themselves in the Syrian civil war (2011–present) as belligerents. The main groups were the Syrian Ba'athist regime and allies, the Syrian opposition and allies, Al-Qaeda and affiliates, Islamic State, and the Kurdish Syrian Democratic Forces.
The Ba'ath Brigades, also known as the Ba'ath Battalions, were a volunteer militia made up of Syrian Ba'ath Party members, almost entirely of Sunni Muslims from Syria and many Arab countries, loyal to the Syrian Government of Bashar al-Assad.
The Deir ez-Zor Governorate campaign of the Syrian civil war consists of several battles and offensives fought across the governorate of Syria:
Harakat Hezbollah al-Nujaba, officially the 12th Brigade, is a radical Iraqi Shi'ite paramilitary group that is especially active in Iraq and formerly in Ba'athist Syria. It was established in 2013 by Akram al-Kaabi to support Bashar al-Assad in Syria against Islamist rebels. The group is supported by the IRGC's Quds Force, which provides the funding, weapons, and training of its members.
The Syria's Tomorrow Movement is a Syrian opposition party founded in March 2016 in Cairo by Ahmad Jarba, a Syrian National Council member. The party was backed by Egypt and the United Arab Emirates and cooperates with the National Coalition for Syrian Revolutionary and Opposition Forces, although it is not part of the coalition. They also cooperate with the Syrian Democratic Council of the Autonomous Administration of North and East Syria.
The Military Security Shield Forces, also called the Military Intelligence Shield Force or simply Military Shield, was a pro-government militia involved in the Syrian Civil War that was affiliated with the Military Intelligence Directorate.
The Guardians of Syria Forces - Lions of Hussein, formerly known as Lions of Hussein Brigade and often shortened to Lions of Hussein, was an Alawite militia which fought for the Ba'athist government during the Syrian Civil War.
The siege of Deir ez-Zor was a large-scale siege imposed by the Islamic State (IS) militant group against several districts in the city of Deir ez-Zor held by the Syrian government military forces, in an attempt to capture the city and secure full control of the Deir ez-Zor Governorate. The ISIL siege of the city lasted for almost 3 years and 2 months, after which the Syrian Army launched a successful offensive that fully recaptured the city nine weeks later.
The Forces of the Fighters of the Tribes, also known as the Tribal Army and the Tribal Fighters, was a multi-tribal militia affiliated with the Syrian Military Intelligence Directorate that took part in the Syrian Civil War on the side of the Ba'athist government. Led by Turki al Buhamad, the Fighters of the Tribes played a vital role in the Assad government's efforts to retake central and eastern Syria. The militia was affiliated with the pro-Ba'athist branch of the Arab Socialist Movement, and is closely allied with Russia.
The Baqir Brigade, is a Syrian militia which fought for the Ba'athist government during the Syrian civil war. The militia was one of the most prominent and largest pro-government militias from the Aleppo area and part of the "Local Defence Forces" network. Its members mostly consists of tribesmen from the al-Baggara tribe that traditionally supported the rule of the al-Assad family despite being mostly Sunni Muslim. Though the militia's fighters thus come from a largely Sunni background, many of them have converted to or are at least strongly influenced by Shia Islam. The Baqir Brigade has also been noted for its strong connections to the Lebanese Hezbollah, Iran, and various Shiite Iraqi militias, and is thus generally considered to be a Shia or "Shi'ified" fighting force.
The Free Palestine Movement is a Palestinian Syrian armed movement and community organization that is led by the businessman Yasser Qashlaq and supported the Ba'athist government of Syria. The organization opposes the existence of Israel, and was mostly known for political activism and social services in favor of Palestinians in Syria and the Gaza Strip before 2012. Upon the outbreak of the Syrian Civil War, however, the Free Palestine Movement formed its own militias and openly fought for the Ba'athist government against various rebel groups until the fall of the Assad regime in 2024.
The Deir ez-Zor offensive (2018) was launched by the Islamic State against government-held areas throughout the Deir ez-Zor Governorate of Eastern Syria. During the offensive, on 8 June, ISIL managed to penetrate the city of Abu Kamal, capturing several parts of it.
Hashemite Tribes Regiment is a militant group based in Eastern Syria, more specifically Deir ez-Zor, and participates in the Eastern Syrian insurgency mainly against U.S-backed groups like the Syrian Democratic Forces and Kurdish forces and groups with the goal of establishing reinforced control of Arab tribes against, what it calls, Kurdish influence.
