500th Anti-Aircraft Missile Regiment
Identification
CNA places the 500th Air Defense Regiment at Gostilitsy. This matches local-government records identifying v/ch 90450 as an anti-aircraft missile regiment in Ozernoye, within Gostilitskoye rural settlement, and a 2024 asset record locating v/ch 90450 at military town No. 60311, 4 km from Gostilitsy. ([cna.org](https://www.cna.org/reports/2021/06/russian-forces-in-the-western-military-district.pdf))
Mission
By 2021, CNA assessed the regiment under the 2nd Air Defense Division of the 6th Air and Air Defense Army. Yle’s 2022 satellite study described St. Petersburg as covered by four long-range SAM regiments in a permanent ring of headquarters and batteries; the 500th is one of the regiments covering the city’s southwestern approaches. ([cna.org](https://www.cna.org/reports/2021/06/russian-forces-in-the-western-military-district.pdf))
Equipment
CNA’s 2021 order of battle assessed the 500th at Gostilitsy with 1 x S-300PM(?) and 2 x S-400 battalions. CNA does not allocate those battalions to exact public coordinates, so the precise system-to-placemark match remains unverified in open sources. ([cna.org](https://www.cna.org/reports/2021/06/russian-forces-in-the-western-military-district.pdf))
Infrastructure
The regiment appears to use a distributed site pattern rather than a single launcher park. Yle notes that St. Petersburg SAM regiments maintain permanent headquarters/barracks and multiple fixed battery sites several kilometres apart, and the 2024 asset record for v/ch 90450 shows enduring support infrastructure at military town No. 60311, including a 1.5 MW modular boiler installed in 2015. ([yle.fi](https://yle.fi/a/3-12626182))
Recent changes
As of September 2022, Yle, using commercial satellite imagery reviewed by retired Finnish officer Marko Eklund, reported that two batteries attributed to the 500th had been emptied and that missile containers had also been removed from one remaining battery. Yle assessed that withdrawals around St. Petersburg were likely mainly older S-300-family equipment, indicating redistribution of part of the regiment’s combat materiel rather than loss of the unit’s garrison footprint. ([yle.fi](https://yle.fi/a/3-12626182))