Direct proof of use
The M107 155 mm high-explosive projectile is documented in Ukrainian service during the Russia-Ukraine War. A U.S. Army article on Ukraine munitions sustainment identifies Spanish-made M107 155 mm high-explosive projectiles received by Ukraine, while Modern War Institute reporting describes the U.S. M107 high-explosive family as a central part of Ukraine's 155 mm artillery ammunition.
The clearest public evidence supports Ukrainian receipt and fielding of M107-family high-explosive shells for 155 mm artillery. It does not identify a single dated fire mission or target struck by a specific M107 projectile.
Sources: U.S. Army Munitions for Ukraine, Modern War Institute Ukraine 155 mm interoperability
Timeline
Spain publicly sent large-caliber artillery ammunition to Ukraine in September 2022. Oryx's running list of Spanish military aid later identified 155 mm M107 artillery rounds for towed artillery and self-propelled guns as delivered before September 2022, and the U.S. Army article separately cited Spanish-made M107 projectiles received by Ukraine as an example of the varied allied ammunition entering the war.
By 2025, Modern War Institute described Ukrainian forces as operating seventeen types of 155 mm howitzers and using nearly fifty models of high-explosive shell, with the M107 family forming one of the basic shell families in that ammunition mix.
Sources: Ukrinform Spain Ammunition Flight, Oryx Spanish Military Aid to Ukraine, U.S. Army Munitions for Ukraine, Modern War Institute Ukraine 155 mm interoperability
Narrative
The M107's role in Ukraine is best understood as conventional high-explosive ammunition for NATO-standard 155 mm artillery rather than as a standalone weapon system. Ukrainian forces received and operated a diverse set of 155 mm howitzers and ammunition from allied and partner suppliers, making older NATO-standard projectiles such as M107-family rounds part of the broader artillery sustainment problem.
The projectile's age and wide production base mattered operationally because ammunition interchangeability was not automatic. Modern War Institute notes that M107-family rounds are physically compatible with NATO 155 mm artillery but carry charge-limit and firing-table considerations when paired with newer propellants and the varied gun fleet in Ukrainian service.
GICHD's Explosive Ordnance Guide for Ukraine identifies a Slovak-origin 155 mm HE M107 projectile, describes it as compatible with NATO 155 mm artillery pieces, and associates Slovak M107 rounds with the KZ-984 point-detonating fuze. That guide supports the projectile-identification context in Ukraine, while the Army, Oryx, and Modern War Institute sources provide the direct Ukraine conflict-use linkage.
Sources: Modern War Institute Ukraine 155 mm interoperability, GICHD Explosive Ordnance Guide for Ukraine, U.S. Army Munitions for Ukraine, Oryx Spanish Military Aid to Ukraine
