Direct proof of use
OCC 105 F3 HEAT-FS is documented in the 2014 Russia-Ukraine War through Getty Images coverage of Ukrainian AMX-10 RC armored fighting vehicles in Donetsk Oblast. The Getty caption identifies HEAT-FS OCC 105 F3 ammunition inside an AMX-10 RC at Ukrainian military positions in the Pokrovsk direction on February 19, 2025.
That evidence supports fielding of the round with Ukrainian AMX-10 RC forces in the conflict. It does not by itself document a specific firing event, target, or battle-damage result for this ammunition.
Sources: Getty AMX-10 RC Pokrovsk OCC 105 F3
Narrative
OCC 105 F3 is the fin-stabilized shaped-charge round in the AMX-10RC/RCR 105x527R ammunition family. Jane's lists the round as the HEAT member of the family for the AMX-10RC, and the French TTA 207 manual lists OCC 105 F3 among the ammunition types for the AMX10 RCR's GIAT 105-F2 gun.
In the Ukraine conflict record, the round is tied to the AMX-10 RC rather than an independently observed infantry or artillery role. The strongest open-source evidence is visual and contextual: Getty's 2025 caption identifies the ammunition by designation inside a Ukrainian AMX-10 RC at front-line positions, while French and Ukrainian defense reporting establishes the vehicle's transfer and Ukrainian marine-unit service.
The documented role is therefore best stated as AMX-10 RC anti-armor ammunition fielded by Ukraine. The available cited sources support possession and fielding in the conflict, but not a separate count of rounds delivered or a verified OCC 105 F3 firing incident.
Sources: Janes Light Tanks and Armoured Cars, French Army TTA 207 AMX10 RCR, Getty AMX-10 RC Pokrovsk OCC 105 F3, Defense Express 37th Marine Brigade Receives AMX-10 RC