Direct proof of use
The 2A36 Giatsint-B is documented on both sides of the 2014 Russia-Ukraine War. Newsweek reported on June 2, 2022 that pro-Russian troops loaded and fired a Hyacinth-B towed field gun near Avdiivka, while Oryx's photo- and video-backed loss lists record 152 mm 2A36 Giatsint-B field guns among both Russian and Ukrainian towed-artillery losses during the full-scale invasion.
Ukrainian use also includes the Finnish service designation 152 K 89. Defense Express reported on April 13, 2023 that video showed a 2A36 Giatsint-B in Ukrainian Armed Forces hands and identified it as probably a Finnish 152K89. Oryx's Finnish aid tracker separately lists 152 mm 152 K89s, identified there as 2A36 Giatsint-Bs, under towed artillery delivered or documented for Ukraine.
Sources: Newsweek Hyacinth-B Avdiivka, Oryx Russian Equipment Losses, Oryx Ukrainian Equipment Losses, Defense Express Finnish Giatsint-B, Oryx Finnish Aid To Ukraine
Timeline
Public documentation becomes clearest after Russia's February 24, 2022 full-scale invasion. Oryx opened its Russia and Ukraine equipment-loss trackers on that date and later listed 2A36 Giatsint-B field guns in the towed-artillery sections for both sides.
The first specific firing episode in the sources used here is Newsweek's June 2, 2022 Avdiivka report. The Finnish 152 K 89 line appears publicly in April 2023, when Defense Express reported likely Finnish-designation Giatsint-B guns in Ukrainian service and Oryx listed 152 K89s in its Finland-to-Ukraine aid tracker.
Sources: Oryx Russian Equipment Losses, Oryx Ukrainian Equipment Losses, Newsweek Hyacinth-B Avdiivka, Defense Express Finnish Giatsint-B, Oryx Finnish Aid To Ukraine
Battlefield role
In this conflict the Giatsint-B appears as long-range towed tube artillery rather than as a new foreign-supplied system. The National Defence University of Ukraine describes the 2A36 as a 152 mm towed gun with a listed firing range up to 40 km, a crew of eight, and a design role that includes suppressing and destroying manpower, firepower, military equipment, and strongpoints.
That role is reflected in the conflict-use reporting. The Avdiivka episode describes pro-Russian Hyacinth-B guns firing against Ukrainian positions near a contested city, while Ukrainian and Russian Oryx loss entries show the gun remained present in the artillery inventories of both armies. The Oryx lists are not total inventories; they count only equipment for which the project found photo or video evidence, so they are best used here as source-backed documentation of fielding and losses.
Sources: National Defence University 2A36 Giatsint-B, Newsweek Hyacinth-B Avdiivka, Oryx Russian Equipment Losses, Oryx Ukrainian Equipment Losses