54th Motor Rifle Regiment
Identification
The metadata most plausibly matches the Russian 54th Motor Rifle Regiment assessed by the Centre for Defence Strategies as part of the 6th Motorized Rifle Division within the 3rd Army Corps. Separately, document-based investigative reporting linked the regiment name to military unit 31831, while Russian court records confirm that v/ch 31831 was an active combat unit in 2023-2025. ([defence.org.ua](https://defence.org.ua/wp-content/uploads/dailybrief/2022/09/CDS-Daily-Brief-23.09.2022.pdf))
Basing
The strongest open-source geographic anchor is Mulino, Nizhny Novgorod Oblast. On 23 September 2022, CDS placed the 3rd Army Corps headquarters, its forward command post, and the 6th Motorized Rifle Division's 7th signal battalion in Mulino; leaked 54th Regiment papers cited in investigative reporting also referenced the local military town and rail loading from Ilyino station, about 11 km away. Open sources reviewed here do not publicly confirm a permanent peacetime barracks address for the regiment beyond this Mulino-Ilyino nexus. ([defence.org.ua](https://defence.org.ua/wp-content/uploads/dailybrief/2022/09/CDS-Daily-Brief-23.09.2022.pdf))
Force generation
The regiment appears to have been raised during the 2022 expansion that created the 3rd Army Corps around Mulino's 333rd Combat Training Center. A later Defense Express review described that center as the birthplace of the corps, and by 6 May 2024 CDS reported the 54th Regiment was restoring readiness at the Prudboy and Kadamovskiy training areas in Rostov Oblast, with training focused on artillery crew commanders, snipers, APC gunners, and MT-LB mechanics. ([en.defence-ua.com](https://en.defence-ua.com/weapon_and_tech/ukrainian_uavs_strike_russian_333rd_training_center_in_mulino_what_it_is_and_its_link_to_rheinmetall-13846.html?utm_source=openai))
Field employment
On 23 September 2022, CDS assessed one battalion tactical group from the 54th Regiment near Novomayorske and expected another to move toward the Novopavlivka axis. Russian court decisions published in 2025 show personnel of v/ch 31831 serving in motor-rifle subunits in the Donetsk theater, including the Siverskyi Donets-Donbas canal area, which is consistent with continued field employment of the unit number tied in investigative reporting to the regiment. ([defence.org.ua](https://defence.org.ua/wp-content/uploads/dailybrief/2022/09/CDS-Daily-Brief-23.09.2022.pdf))
Confidence gaps
Open-source visibility remains uneven. A district-head obituary notice cited by Caucasian Knot identified a serviceman killed in October 2025 as having served in the 54th Motorized Rifle Regiment, indicating the regiment name was still in active use, but reviewed public sources do not reliably establish the regiment's exact current garrison, full structure, or present-day district alignment. ([eng.kavkaz-uzel.eu](https://www.eng.kavkaz-uzel.eu/articles/69231?utm_source=openai))