Direct proof of use
Ballistic missiles are documented in the 2011 Syrian Civil War through Iranian Islamic Revolutionary Guard Corps strikes against Islamic State targets in eastern Syria. The Iran Primer, published by the United States Institute of Peace, summarizes that Iran fired a dozen short-range ballistic missiles in 2017 and 2018, mainly Zolfaghar missiles, against ISIS targets in eastern Syria, with some missiles crossing Iraq after traveling more than 370 miles.
CSIS Missile Threat likewise records that Iran launched six missiles into eastern Syria near Deir ez-Zor in June 2017 and carried out a similar strike against Islamic State targets in October 2018. These sources support a broad ballistic-missile conflict-use record rather than a single missile-model page.
Sources: Iran Primer Missile Timeline, CSIS Missiles of Iran
Timeline
The first documented event came on June 18, 2017, when the IRGC fired missiles from western Iran toward Deir ez-Zor province after Islamic State attacks in Tehran earlier that month. AP reported the Guard's attribution and described the strike as a wider warning, while FDD's Long War Journal noted Iranian-source reporting that the missiles were fired from IRGC Aerospace Force bases in Kordestan and Kermanshah provinces.
The second major event came on October 1, 2018. AP reported that the IRGC launched six ballistic missiles and drone bombers toward eastern Syria after the Ahvaz military-parade attack, and Al Jazeera reported the Guard's statement that at least six missiles were fired into Syria. Washington Institute analysis identified the October strike as Operation Strike of Muharram and described Iranian media accounts of Zolfaghar and Qiam missile types.
Sources: AP 2017 Syria Missile Strike, FDD 2017 Syria Missile Strike, AP 2018 Syria Missile Strike, Al Jazeera 2018 Syria Missile Strike, Washington Institute Second Syria Strike
Battlefield role
The documented role was long-range strike by a foreign allied force, not routine Syrian Arab Army ballistic-missile fire. In the catalog's side model, these Iran/IRGC strikes are mapped to the Syrian government and allies side because they were carried out by an allied state actor against Islamic State targets inside Syria during the war.
The 2017 strike was framed by Iranian sources as retaliation for Islamic State attacks in Tehran and was aimed at targets around Deir ez-Zor. The 2018 strike followed the Ahvaz parade attack and targeted Islamic State-linked positions in the Abu Kamal, Al Bukamal, and Hajin area of eastern Syria, near the Iraqi border. Public reporting supports launch, operator, target area, and broad missile class; it does not establish a complete impact list, casualty record, or reliable per-missile effectiveness assessment for every launch.
Sources: Iran Primer Missile Timeline, AP 2017 Syria Missile Strike, AP 2018 Syria Missile Strike, Al Jazeera 2018 Syria Missile Strike, Washington Institute Second Syria Strike
