Direct proof of use
The M106 appears in the 2014 Russia-Ukraine War record as Ukrainian 203 mm heavy-artillery ammunition. Ukrainska Pravda reported on 23 June 2023 that Ukrainian gunners had received U.S.-made 203 mm M106 projectiles for 2S7 Pion self-propelled guns, citing Militarnyi and a 43rd Brigade-linked account.
The transfer and use claims should be read separately. A U.S. Department of Defense fact sheet dated 9 June 2023 listed 10,000 203 mm artillery rounds among U.S. security assistance committed to Ukraine. Ukrainska Pravda identified the received projectiles as M106 rounds, while later Army Recognition reporting described Ukrainian government imagery of a Ukrainian 2S7 Pion with U.S.-origin M106 203 mm ammunition and a reload scene.
Sources: Ukrainian Pion guns now fire US-made projectiles, DOD Ukraine Fact Sheet June 9 2023, Ukrainian Forces Use 203mm US Ammunition with Russian 2S7 Self-Propelled Howitzer
Narrative
The M106 is a U.S.-developed 8-inch, roughly 203 mm, nose-fuzed high-explosive fragmentation projectile. METIS describes it as a boat-tailed HE-fragmentation artillery shell developed in the United States around the Second World War, while Army Recognition describes the wartime Ukrainian context as an unusual but possible pairing of U.S. 203 mm ammunition with the Soviet-origin 2S7 Pion gun.
In Ukrainian service, the M106 filled a narrow ammunition role rather than introducing a new firing platform. The documented user is Ukraine, the delivery context is U.S. or allied assistance, and the supported firing context is Ukrainian 2S7 Pion heavy artillery. Open sources do not establish the exact number of M106 rounds delivered, how widely they were distributed, or a specific strike location tied to an individual M106 shell.
Sources: M106 (US 8" HE Projectile), Ukrainian Forces Use 203mm US Ammunition with Russian 2S7 Self-Propelled Howitzer, Ukrainian Pion guns now fire US-made projectiles
