5th Air Defense Division
Identity
Best open-source match for this record is the headquarters of Russia's 5th Air Defense Division, military unit 52096, at Petrovskoye in Leninsky district, Moscow Oblast. Public registry entries derived from EGRUL list unit 52096 at Petrovskoye, and a force-structure study of the 1st Air Defense and Missile Defense Army places the 5th Air Defense Division there. ([companies.rbc.ru](https://companies.rbc.ru/id/1035000901100-vojskovaya-chast-52096/?utm_source=openai))
Command role
The division sits under the 1st Air Defense and Missile Defense Army, the Moscow-centered formation responsible for protecting the capital and nearby regions. Publicly listed regimental garrisons tied to the division at Ilyinskoye, Pestovo, Kablukovo, Elektrostal, and Torbeevo indicate a belt covering the southern and eastern approaches to Moscow; that sector assignment is an inference from the basing pattern rather than an officially published area-of-responsibility map. ([nvo.ng.ru](https://nvo.ng.ru/concepts/2019-01-11/7_1029_army.html?utm_source=openai))
Subordinate structure
A detailed 2019 OSINT order-of-battle study, reflecting 2018 dispositions, lists the division with four surface-to-air missile regiments: 549th at Ilyinskoye, 606th Guards at Elektrostal, 614th Guards at Pestovo, and 629th Guards at Kablukovo, plus the 9th Radio-Technical Regiment at Torbeevo. That study assessed a mixed S-400 and S-300PM force, with the 549th and 606th as the main S-400-equipped regiments; those equipment counts are dated and should not be treated as a current inventory snapshot for March 2026. ([cacds.org.ua](https://cacds.org.ua/wp-content/uploads/2019/08/%D0%92%D0%98%D0%9A%D0%9B%D0%98%D0%9A%D0%98-%D1%96-%D0%A0%D0%98%D0%97%D0%98%D0%9A%D0%98-%D0%91%D0%B5%D0%B7%D0%BF%D0%B5%D0%BA%D0%BE%D0%B2%D0%B8%D0%B9-%D0%BE%D0%B3%D0%BB%D1%8F%D0%B4-%D0%A6%D0%94%D0%90%D0%9A%D0%A0-%E2%84%96-16-127.pdf))
Infrastructure and capability
Open sources portray the division as a dispersed, fixed-garrison air-defense formation rather than a single consolidated base. The best-documented subordinate site is the 606th Guards regiment in Elektrostal: a defense-industry and military-press feature states it became the first Russian regiment to assume S-400 duty on 6 August 2007, later hosted training for other S-400 crews, and continued object air defense for Moscow while remaining deployable to other theaters. ([ashurbeyli.ru](https://www.ashurbeyli.ru/media/article/voenno-promyshlennyy-kurer-soispolniteli-triumfa-17563))
Recent public indicators
Recent public reporting still shows activity by the division's subordinate regiments. In April 2025, a Friazino municipal report said military unit 51857, the 629th Guards regiment, had returned to its home station and was again defending the sky of the Central Federal District. That statement comes from local-government coverage rather than a full official force-posture release, so it is best treated as a useful but limited indicator of continuing operational relevance. ([360.ru](https://360.ru/news/ukrainian-crisis/den-vojsk-protivovozdushnoj-oborony-otmetili-vo-frjazine/?utm_source=openai))