The following is a timeline of the Syrian uprising from September to December 2011. This period saw the uprising take on many of the characteristics of a civil war, according to several outside observers, including the United Nations Commission on Human Rights, as armed elements became better organized and began carrying out successful attacks in retaliation for the ongoing crackdown by the Syrian government on demonstrators and defectors.
The siege of Homs was a military confrontation between the Syrian military and the Syrian opposition in the city of Homs, a major rebel stronghold during the Syrian Civil War. The siege lasted three years from May 2011 to May 2014, and ultimately resulted in an opposition withdrawal from the city.
The Rif Dimashq clashes were a series of unrests and armed clashes in and around Damascus, the capital of Syria, from November 2011 until a stalemate in March 2012. The violence was part of the wider early insurgency phase of the Syrian civil war. Large pro-government and anti-government protests took place in the suburbs and center of Damascus, with the situation escalating when members of the Free Syrian Army (FSA) started attacking military targets in November.
The following is a timeline of the Syrian Civil War from January to April 2012, during which time the spate of protests that began in January 2011 lasted into another calendar year. An Arab League monitoring mission ended in failure as Syrian troops and anti-government militants continued to do battle across the country and the Syrian government prevented foreign observers from touring active battlefields, including besieged opposition strongholds. A United Nations-backed ceasefire brokered by special envoy Kofi Annan met a similar fate, with unarmed UN peacekeepers' movements tightly controlled by the government and fighting.
The following is a timeline of the Syrian Civil War from May to August 2012. The majority of death tolls reported for each day comes from the Local Coordination Committees, an opposition activist group based in Syria, and the Syrian Observatory for Human Rights, another opposition group based in London.
The following is a timeline of the Syrian Civil War from September to December 2012. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
The 2012 Hama offensive was a military operation during the Syrian Civil War launched by the Syrian opposition on 16 December 2012, with the intent of taking control of the Hama Province. The offensive was stopped after the Syrian Army launched a counter-offensive, leaving the rebels in control of only half a dozen towns and villages in the north of the province.
The Battle of Qalamoun started on 15 November 2013, with air strikes on the town of Qara, in the strategic Qalamoun region, in an attempt by the Syrian Army to cut rebel supply lines to Damascus from Lebanon. The strategic region had been used by rebel forces as a rear base for its operations around the capital Damascus. For its part, government forces had been using the nearby highway to link Damascus with the central Homs province and had multiple weapons depots in the area. The battle was primarily led on the rebel side by the Al-Nusra Front.
The following is a timeline of the Syrian Civil War from January to July 2015. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
The following is a timeline of the Syrian Civil War from August to December 2015. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
The following is a timeline of the Syrian Civil War from January to July 2014. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
The following is a timeline of the Syrian Civil War from January to April 2016. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War.
On 21 February 2016, two car bombs struck exploded in the predominantly Alawite neighborhood of al-Zahra in Homs, Syria. The bombings killed at least 57 people and injured more than 100 others. At least 60 surrounding buildings and dozens of cars were destroyed in the blasts.
The Palmyra offensive in December 2016 was a military operation launched by the military of ISIL which led to the re-capture of the ancient city of Palmyra, and an unsuccessful ISIL attack on the Tiyas T-4 Airbase to the west of the city. ISIL previously controlled the city from May 2015 until March 2016.
The following is a timeline of the Syrian civil war for 2021. Information about aggregated casualty counts is found at Casualties of the Syrian civil war.
Islamic State of Iraq and the Levant 
