This was reported by the Ministry of Defense of Belarus
The personnel of a rocket artillery divizion of the 231st Artillery Brigade takes part in field drills. The servicemen are studying 220-mm Uragan MLRS and 301-mm V200 Polonez MLRS. This was reported by the Ministry of Defense of Belarus.
It’s noted in the press release that the priority task of the field drills is to train personnel in combat use of the Polonez MLRS. The system will soon be put into service with the 231st Brigade. Also, during the drills, there will be a comprehensive training session on practicing missile strikes in cooperation with the assigned crews of Supercam-S350 and Supercam-S100 unmanned aerial systems.
Ministry of Defence (Belarus)
The 231st Brigade (military unit 22313) is stationed in Barouka (Lepel district, Vitsebsk region) and is part of the Northwestern Operational Command of the Belarusian Armed Forces. So far, the brigade has been armed with only Uragan MLRS.
Apparently, there is no talk yet of fully rearming the 231st Brigade’s divizion with Polonez MLRS. The brigade’s rocket division will (for now) have both Polonez and Uragan MLRS in service. It’s possible that the latter will be replaced by a modernized version of the Uragan-M, which was put in service with the Belarusian Armed Forces at the end of 2022. We can also expect the Polonez MLRS to be put into service with the 111th Artillery Brigade (military unit 11921, Brest), which is part of the Western Operational Command.
The 231st Brigade will become the second unit of the Belarusian Armed Forces to be armed with Polonez MLRS. Previously, the systems were in service only with the 77th Separate Rocket Artillery Divizion of the 336th Rocket Artillery Brigade (military unit 12190, central subordination). Polonez systems were put in service with the 336th Brigade in 2016. It was reported that the division has 6 MLRS launchers.
Thus, the Polonez MLRS will be present not only in artillery units of central subordination, but also at the level of operational commands of the Ground Forces.