Direct proof of use
Armament Research Services reported in March 2016 that Toophan systems had been documented in service with pro-government, predominantly Shi'a militias in Syria and Iraq. The report identified the Toophan family as Iranian missiles derived from the BGM-71 TOW line and treated the Syrian examples as part of a wider pattern of Iranian missile transfers in regional wars.
CSIS later assessed that Hezbollah forces in Syria had amassed Toophan anti-tank guided missiles among a broader set of weapons and systems. The same CSIS assessment described Hezbollah's forces and allied militias as operating in support of Syrian-government objectives, including operations around al-Qusayr, Damascus-area suburbs, Qalamoun, and the Lebanese-Syrian border.
Sources: ARES Toophan-3 report, CSIS Hezbollah in Syria
Timeline
By March 2016, ARES had publicly documented Toophan systems in service with pro-government, predominantly Shi'a militias in Syria. That reporting does not name a specific Syrian launch event, but it directly places Toophan systems with forces fighting on the government-aligned side of the conflict.
In June 2018, CSIS listed Toophan anti-tank guided missiles in Hezbollah's Syrian arsenal and described Hezbollah's Syria deployment as its largest outside Lebanon, with thousands of fighters and extensive support from Iran. CSIS characterized the Toophan as a man-portable SACLOS anti-tank missile usable by small teams against armored vehicles, buildings, and other targets.
Sources: ARES Toophan-3 report, CSIS Hezbollah in Syria
Narrative
The Toophan's documented Syrian role was anti-armor and direct-fire support for Syrian-government-aligned formations rather than a state-to-state conventional deployment. The clearest public evidence links the system to pro-government Shi'a militias and to Hezbollah, both of which fought alongside the Assad government during major phases of the war.
The available public record separates fielding from confirmed firing. ARES supports that Toophan systems were in service with pro-government militias in Syria, while CSIS supports Hezbollah possession and Syrian-theater stockpiling. Neither source, in the cited passages, identifies a dated Toophan launch, target, or battle-damage result in Syria.
Sources: ARES Toophan-3 report, CSIS Hezbollah in Syria