Direct proof of use
The baseline RM-70 is documented in Ukrainian service during the 2014 Russia-Ukraine War through transfer reporting, open-source delivery tracking, and identified imagery of Ukrainian operators. Defense Express reported on May 13, 2022 that RM-70 multiple launch rocket systems were already in service with the Armed Forces of Ukraine, while noting that the available social-media video did not establish whether the filmed launchers were at the front or at a training or formation area.
Czech reporting the previous month described RM-70 Grad launchers and Dana self-propelled howitzers as part of Czech heavy-equipment deliveries to Ukraine. Echo24 cited online footage as confirming earlier information that the Czech Republic had provided several Dana howitzers and RM-70 Grad rocket launchers to the Ukrainian army, and embedded open-source tracking that described more than twenty RM-70 systems recently delivered from Czech stocks for use.
A later RUSI commentary used a Ukrainian military image captioned as Ukrainian artillerymen operating RM-70 multiple launch rocket systems donated by the Czech Republic. Oryx's Czech military-support list separately tracked more than twenty 122 mm RM-70s delivered in April 2022, a later crowdfunded RM-70 'Premysl', and rockets for RM-70 and BM-21-family launchers.
Sources: Defense Express RM-70 Already in Ukraine, Echo24 Czech RM-70 Grad, RUSI MLRS and the Totality of the Battlefield, Oryx Czech Military Supplies to Ukraine
Timeline
The documented RM-70 sequence starts in April 2022, when Czech and open-source reporting placed the baseline launchers in Ukrainian hands. Echo24 reported on April 14 that Czech-supplied heavy equipment included RM-70 Grad launchers, and Oryx listed more than twenty 122 mm RM-70s under April 2022 Czech supplies to Ukraine.
Defense Express followed on May 13, 2022 with a report that RM-70 launchers were already in Ukrainian service. In February 2023, RUSI published its battlefield-MLRS commentary with a Ukrainian military image identifying Ukrainian artillerymen operating Czech-donated RM-70 systems. In March 2023, Euronews reported that Czech citizens had raised funds to send another RM-70 launcher and 365 rounds of ammunition to Ukraine.
Sources: Echo24 Czech RM-70 Grad, Oryx Czech Military Supplies to Ukraine, Defense Express RM-70 Already in Ukraine, RUSI MLRS and the Totality of the Battlefield, Euronews RM-70 Fundraiser
Operational role
In Ukrainian service, the RM-70 filled the same broad battlefield niche as other Grad-family 122 mm multiple rocket launchers: mobile area-fire artillery for fire support and interdiction. Defense Express described the RM-70 as the Czechoslovak analogue of the Grad, built around a 122 mm launcher on a Tatra T813 8x8 chassis. Echo24 similarly described the RM-70 Grad as a Czechoslovak Tatra-chassis rocket launcher and identified it as a domestic version of the BM-21 Grad.
The sources support transfer, fielding, and operation by Ukrainian forces more strongly than they support named individual strikes. Defense Express explicitly cautioned that the early video evidence did not establish whether the filmed launchers were at the front or at training or formation locations; RUSI's caption provides the clearest public identification of Ukrainian artillerymen operating Czech-donated RM-70 systems.
Sources: Defense Express RM-70 Already in Ukraine, Echo24 Czech RM-70 Grad, RUSI MLRS and the Totality of the Battlefield