Timeline of the Syrian Civil War (August–December 2015)

August 11
Rebels begin their push into the Alawite heartland by capturing much of the Sahl al-Ghab plain in northwestern Syria.

August 16
According to the Syrian Observatory for Human Rights, four separate missiles were fired at Douma by SAAF fighters, which struck the main market in the town during rush hour, killing 96 people.

August 22
At least 50 people - mainly women and children - are killed when the Assad regime targeted the Douma town in an opposition-held suburb of Damascus with barrel bombs. A number of buildings were destroyed by the attacks, while another 100 are injured.

August 30
ISIS fighters launch an assaults on Qadam and Asali in the southern outskirts of Damascus from their base in Al-Hajar al-Aswad, clashing with Jaysh al-Islam fighters in Qadam and those of Ajnad al-Sham in Asali.

September 1
Levant Front clandestine security conducted an undercover raid into an area under ISIS control in the northern Aleppo countryside, killing three foreign fighters of ISIS.

September 2
Digital reports surface on the web of a possible Russian Air Force bombing campaign in Syria, mostly targeting ISIS & other Islamist objectives.

September 4
Fierce clashes took place in the vicinity of Marea town north of Aleppo, where Levant Front rebel soldiers killed seven ISIS militants and took 11 others as hostages, beside destroying three ISIS vehicles. The Shamiya Front also seized heavy machine guns from ISIS militants, as dozens withdrew from the area after “heavy losses”.

Other rebel factions attacked ISIS-held villages of Harbal, Sandaf, Kafrah and Harjal in the northern countryside of Aleppo. It was not clear whether the attacks caused any casualties in the ranks of ISIS.

September 5
Anti-government violence erupted in the town of Sweida, a stronghold of the Druze minority sect, following the killing of Druze leader Sheikh Wahid Al-Balous, a prominent cleric in rare explosions the previous day that claimed the lives of at least 25 others. Rioters holding the government responsible for the cleric's death destroyed the statue of late President Hafez Al-Assad and besieged security offices.

September 11
A Syrian military source informs of Russian troops presence in Syria.

Jaysh al-Islam shelled and stormed Adra Prison, taking control of two buildings.

September 15
The Levant Front shoots down an M6 warplane for the pro-Assad air force near the Nairab military airport in Aleppo province, and seizes control of major parts of Hamdaniyah district after fierce clashes with pro-Assad militias, killing at least fifteen regime soldiers. The Front also bombs pro-Assad security headquarters in Salahaddin neighborhood. The regime forces responded with dropping more than six barrel bombs on the rebel-held neighborhoods of Dahiya and Shekhan in Aleppo, killing more than ten civilians.

September 16
At least 15 civilians - six children and nine women - are killed and dozens injured after pro-Assad warplanes launch some four rockets targeting residential buildings in rebel-held al-Maadi neighborhood in Aleppo city in the evening, with more than 25 injured.

September 17
A short video is released purporting to show Free Syria Army (FSA) soldiers in Idlib installing sensor wires on a new DIY missile defense system for areas under their control to provide some protection to the civilians and planning to continue the project in other cities.

Government helicopters drop barrel bombs that struck a busy market place, that is packed with shoppers and people buying necessities for children who go back to school this week, in the FSA-held Bosra, killing between 17 and 24 people and many others wounded, with many of them in critical condition.

At least 47 people were killed in air raids by Syrian government forces in rebel-held areas of the northern city of Aleppo.

Syrian warplanes carried out a wave of airstrikes in the Islamic State-held city of Raqqa.

September 18
United States Defense Secretary Ashton B. Carter opened a dialogue regarding Syria with his Russian counterpart, Sergei K. Shoigu, aimed at making sure that American and Russian forces avoid running into each other.

The Islam Army posts a video showing its members firing multiple rockets at the Bassel airport on the coast used by Russian troops, and warns the Russians that they will not enjoy peace in Syria.

September 21
Pro-Assad forces targeted al-Shaar neighborhood in eastern Aleppo city with surface-to-surface missiles, hitting a crowded public market, killing more than 30 civilians and dozens wounded.

September 22
Syrian army recaptures villages in Hama suburbs.

September 26
The U.S military admitted that US-trained Syrian rebels has handed over their vehicles and ammunition to fighters linked to al-Qaeda, apparently to gain safe passage.

September 27
Its reported that the British Prime Minister David Cameron did not rule out that Assad could be part of a transition, but “what he is very clear about is that Assad cannot be part of Syria’s future in the long run.”

France starts launching its first air strikes in Syria targeting ISIS training camps.

Russian President Vladimir Putin branded U.S. support for rebel forces in Syria as illegal under the UN charter and ineffective, saying U.S.-trained rebels were leaving to join Islamic State with weapons supplied by Washington, according to the American military's own reports.

September 29
Digital Reports informs that the Pentagon has suspended the “train and equip” program for Syrian Rebels also known as New Syrian Forces (NSF).

September 30
Russia starts bombing Syria.

October 4
Egyptian President Abdel Fattah el-Sisi expressed its support to the Russian military intervention in the Syrian Civil War.

October 7
4th Hama Offensive begins with Iranian and Russian support.

The FSA repels an offensive mounted by Assad forces in the countryside near Hama, destroying 10 government tanks — despite coming under repeated Russian air assault.

October 8
FSA rebels claim to have downed two regime helicopters that were mounting a coordinated air assault with Russian warplanes on the village of al-Mugheer. Meanwhile, the Syrian Army captures 40 km of territory in northern Hama

October 10
On 10 October, it was reported that the Syrian Army captured the strategically important villages of Atshan and Om Hartein and that it was pushing onwards to capture Khan Shaykhun in southern Idlib province. A number of government tanks and APC's were destroyed during the clashes. Hezbollah senior leader Hassan Hussein al-Haj was killed that day.

October 14
A U.S official told Fox News that Russian Airstrikes have killed 150 CIA trained rebels in ‘deliberately targeting’ during its Intervention in Syria.

October 20
Military officials of Russia and the U.S signed a "memorandum of understanding" to avoid clashes in air over Syria.

The new elected Prime Minister of Canada, Justin Trudeau announced that his nation will no longer provide jets fighters for the fight against ISIS.

Former U.S President Jimmy Carter announced that he provided maps of ISIS positions in Syria to the Russian embassy in Washington.

Russian warplanes struck a field hospital in the town of Sarmin killing 13 people, including two medical staff. A physiotherapist, Hassan Taj al-Din, and a hospital guard from the clinic, which was run by the Syrian-American Medical Society (SAMS), were killed in the attack. Taj al-Din leaves behind his four-months pregnant wife.

October 28
Regime forces conducted airstrikes that dropped as many as 12 barrel bombs on the town of Darayya in multiple raids, killing at least three people including a woman and her son.

October 29
The Syrian Observatory of Human Rights reported that according to a defected ISIS leading figure from Syrian descent, over 200 ISIS fighters from Chechnya and central Asian nationalities were executed for trying to defect from IS to join Jabhat al-Nusra.

November 2
Jaysh al-Islam a major rebel group near the capital Damascus, displayed caged civilian captives used as 'human shields'.

November 5
Jund al-Aqsa-led rebel forces seized control of Murak, following clashes with pro-government forces.

November 6
The Ajnad al-Sham showed pictures of a beheaded SAA officer, labeling him as a “Nusayri” (derogatory word to an Alawi Muslim) on Twitter and Facebooks accounts. In a separate event, the Ajnad al-Sham and other rebel forces recaptured the village of Atshan and surrounding areas in Hama province, consolidating significant advances made the day before at the expense of pro-government forces.

November 8
Russian air strikes on areas in the town of Maaret al-Numan, Idlib, killing nine people, including a child, and on Saraqib in the same province, killing another two women.

At least 10 people were killed in Syrian government air strikes on ISIS-held town of Al-Bab, icluding a woman and child.

November 10
Syrian Armed Forces reach the Kwayres Airbase and end the siege of 3 years imposed by the ISIS.

Syrian Rebels fire a rocket at Latakia killing 22 civilians and wounding 65.

November 11
Eastern media reports of massive desertions in the FSA forces located in Aleppo, fueled mostly by lack of payment.

November 13
Army media reported SAA advances into the Marj Al-Sultan Military Airbase in Damascus, after heavy clashes with Jaysh al-Islam, meanwhile in Aleppo the Lebanese Group Hezbollah and Syrian Army Units reported the capture of Jabal Al-Eiss from Harakat Ahrar Al-Sham rebels.

November 17
Syrian state media reported that the SAA seized the village of al-Hadath from the Islamic State around 30 km from the Damascus-Homs highway

November 19
Government forces shelling in Sheikh Maskin, Daraa and Douma killed 20 people and wounded 90.

November 23
Syrian Armed forces reported advances through Homs Governorate at Mahaden, Northern Latakia and strides towards the Aleppo-Lattakia highway.

November 29
94 wanted persons from Damascus, its countryside and Idleb provinces turned on themselves in Sunday to authorities to have their legal status settled.

Russian airstrikes kill at least 18 civilians and wound dozens more in the town of Ariha.