6th Combined Arms Army
Identification
This record matches military unit 31807, the headquarters of Russia’s 6th Combined Arms Army in the Agalatovo/St. Petersburg area. ISW’s late-2023 order of battle places the army HQ at Agalatovo, while IISS in 2025 described the formation as headquartered in St. Petersburg, indicating the command is associated with the northern St. Petersburg garrison complex rather than a single consistently reported public address. Russian state media reported that on 6 October 2025 the formation received the honorific “Guards,” making the current official styling 6th Guards Combined Arms Army. ([understandingwar.org](https://understandingwar.org/wp-content/uploads/2023/12/October20122C20202320Russian20Orbat_Final.pdf))
District role
The headquarters sits under the re-established Leningrad Military District. Chatham House notes that President Putin formally split the former Western Military District on 26 February 2024, recreating the Leningrad and Moscow military districts, and assesses the Leningrad district as oriented toward an anti-NATO posture after Finland and Sweden joined the alliance. ([chathamhouse.org](https://www.chathamhouse.org/2024/07/assessing-russian-plans-military-regeneration/02-manpower-force-structure-and-command-and))
Known force structure
ISW’s order of battle identifies the 6th Army HQ at Agalatovo with key subordinate formations in northwestern Russia, including the 138th Motorized Rifle Brigade at Kamenka, 25th Motorized Rifle Brigade at Luga, 9th Artillery Brigade at Luga, 26th Missile Brigade at Luga, and the 5th Anti-Aircraft Missile Brigade near St. Petersburg. This makes the site a true operational-level headquarters controlling maneuver, fires, missile, and air-defense elements rather than a stand-alone administrative office. ([understandingwar.org](https://understandingwar.org/wp-content/uploads/2023/12/October20122C20202320Russian20Orbat_Final.pdf))
Expansion near NATO borders
Authoritative Baltic and Nordic intelligence reporting indicates that the army has been expanded as part of Russia’s northwestern buildup. Estonia’s Foreign Intelligence Service reported that in 2024 the 138th Brigade was expanded into the 69th Motor Rifle Division near Estonia and that the 25th Brigade began expansion into the 68th Motorised Rifle Division in the second half of 2024; Finland’s 2026 Military Intelligence Review and IISS both depict the 69th and 68th divisions as 6th Army formations in Finland’s neighborhood. ([raport.valisluureamet.ee](https://raport.valisluureamet.ee/2025/upload/vla_eng-raport_2025_WEB.pdf))
Operational employment
The headquarters is not only a territorial command for the St. Petersburg-Finland-Baltic axis; its formations have also been fed into the war in Ukraine. Estonia’s Foreign Intelligence Service states that the newly formed 69th division was deployed to the Ukrainian front after formation to gain combat experience, and Russian state media in December 2025 placed the 121st Motor Rifle Regiment of the 68th Motor Rifle Division, subordinate to the 6th Army, at a forward command post near Kupiansk. The supplied commander field is not repeated here because authoritative public confirmation of the current commander was not located in the sources reviewed as of 12 March 2026. ([raport.valisluureamet.ee](https://raport.valisluureamet.ee/2025/upload/vla_eng-raport_2025_WEB.pdf))