Direct proof of use
The 2S40 Floks is tied to Russian use in the 2014 Russia-Ukraine War through two clusters of direct public reporting. On October 6, 2023, LIGA.net reported that Ukrainian defense forces hit a Russian Floks for the first time after Russian delivery announcements, identifying the Ukrainian reconnaissance group Ocean's Twelve as the unit reported to have struck the system with a drone. Defense Express reported the same episode as a claimed Ukrainian drone attack on a 2S40 Floks in the Kherson region, while noting that the strike's damage consequences were not confirmed.
A second public episode followed near Bakhmut in March 2024. Defense Express reported on March 30 that the Signum unit of Ukraine's 93rd Mechanized Brigade spotted a Russian Floks during aerial reconnaissance and used an FPV drone to destroy it. Army Recognition described the same action near Bakhmut, stating that the Phlox 2S40 had been deployed on the Ukrainian front as early as October 2023. Newsweek also reported the Bakhmut claim while stating that it could not independently verify when or where the footage was filmed.
Sources: LIGA Floks First Engagement, Defense Express Kherson Floks Strike, Defense Express Bakhmut Floks Strike, Army Recognition Bakhmut Phlox Strike, Newsweek Bakhmut Floks Report
Documented timeline
Rostec announced on October 5, 2023 that it had begun transferring a batch of 120 mm Floks self-propelled artillery guns to Russian troops. The following day, Ukrainian and Ukrainian defense media reported the first known Ukrainian strike against a Floks, placing the episode in the Kherson region and preserving the caveat that the final damage state was unknown.
On March 29 and 30, 2024, Army Recognition and Defense Express reported a Bakhmut-area FPV-drone strike against another Russian Floks. Those accounts attributed the action to the Signum strike-drone unit associated with Ukraine's 93rd Separate Mechanized Brigade, and described the target as a Russian 120 mm self-propelled mortar or gun-mortar system.
Sources: Rostec Floks Deliveries, LIGA Floks First Engagement, Defense Express Kherson Floks Strike, Defense Express Bakhmut Floks Strike, Army Recognition Bakhmut Phlox Strike
Battlefield role and evidence
The documented battlefield role is Russian fire support from a wheeled 120 mm gun-mortar platform. Rostec presented the system as a vehicle for artillery batteries, able to fire both mortar ammunition and artillery projectiles from a protected Ural-4320 chassis. LIGA.net's reference section described the Floks as intended to support ground-force formations against personnel, artillery and mortar batteries, rocket launchers, armored targets, fire means, and command points.
The available conflict-use record does not publicly establish a large number of Floks systems in Ukraine. Instead, it shows a newly delivered Russian artillery type appearing in battlefield video-reporting soon after the October 2023 delivery announcement, then appearing again in a March 2024 Bakhmut-area strike report. In both cases, the direct public evidence comes from Ukrainian-linked strike footage reported by defense and news outlets rather than from a Russian operational statement describing combat employment.
Sources: Rostec Floks Deliveries, LIGA Floks First Engagement, Defense Express Kherson Floks Strike, Defense Express Bakhmut Floks Strike, Army Recognition Bakhmut Phlox Strike, Newsweek Bakhmut Floks Report