Direct proof of use
The Falaq-2 appears in the Syrian Civil War record through Armament Research Services' 2014 report on Iranian Falaq-1 and Falaq-2 rockets in Syria. ARES states that both the Falaq-1 and Falaq-2 rockets and their associated launchers had been documented in Syria during the conflict, and that the combat application of Falaq and Falaq-like systems appeared to begin with government-force use first documented in videos toward the end of 2012.
The clearest Falaq-2 government-side example in the report is a system believed to belong to pro-government forces in Aleppo in November 2012. ARES separately notes that Falaq-2 type launchers had been observed in two-tube configuration on light trucks in Syria.
Sources: ARES Falaq Rockets in Syria
Timeline
ARES places the first documented government-force use of Falaq and Falaq-like systems toward the end of 2012. The report identifies an early November 2012 Aleppo image as the first clear picture of a two-tube launcher, and captions a Falaq-2 system believed to belong to pro-government forces in Aleppo that month.
By May 2014, ARES had published a fuller open-source assessment of the family in Syria, including Falaq-2 launcher configurations, Iranian production context, and technical specifications for the FL2-A rocket.
Sources: ARES Falaq Rockets in Syria, ARES Falaq Report Announcement
Battlefield role
In Syrian government service, the Falaq-2 was documented as a short-range unguided surface-to-surface rocket for dense urban fighting and direct fire-support contexts. ARES describes the Falaq systems as suited to short-range fighting in dense urban areas and contrasts the FL2-A's high-explosive payload with smaller 107 mm rockets.
The observed Falaq-2 launchers were not limited to a single standard battery layout. ARES recorded Falaq-2 type launchers in two-tube light-truck configurations, and the parent Falaq family in Syria appeared in several configurations across the conflict.
Sources: ARES Falaq Rockets in Syria
Evidence limits
This record treats Syrian government and allied use as the compact catalog claim because the ARES report identifies a Falaq-2 system believed to belong to pro-government forces in Aleppo. ARES also states that Falaq-1 and Falaq-2 type systems were observed with armed groups on both sides of the conflict, but the public detail available in the report is stronger for the pro-government Falaq-2 example than for assigning every observed launcher to a named group.
The East Ghouta chemical-attack discussion in the same ARES report is not treated here as Falaq-2 use. ARES describes those munitions as non-standard rockets linked to Falaq-style launchers and notes diameters larger than the 333 mm Falaq-2, so this page keeps that material as background only rather than attributing the attack to Falaq-2 rockets.
Sources: ARES Falaq Rockets in Syria, UN Ghouta Report