Military unit 85388 is consistently identified in open sources as the 18th Guards Anti-Aircraft Missile Regiment in Feodosia. An investigative map places its barracks and vehicle park at Fedko 38 and its main SAM position on Cape Iliya, closely matching the first two supplied placemarks. ([investigator.org.ua](https://investigator.org.ua/ua/topnews/248273/))
Russian reporting in July 2016 described the regiment as part of the 31st Air Defense Division and said its permanent deployment site was Feodosia. TASS then reported on 14 January 2017 that the regiment in Feodosia entered combat duty with S-400 systems under the 4th Air and Air Defense Army. ([rt.com](https://www.rt.com/news/351219-crimea-s-400-missiles/))
Open-source geolocation by DFRLab fixed the Feodosia SAM site at roughly 45.0105, 35.3981, matching Cape Iliya south of the city. DFRLab further assessed that this position reused former Ukrainian air-defense infrastructure rather than a newly created field site. ([dfrlab.org](https://dfrlab.org/2017/01/22/new-missiles-for-old/))
Open-source reporting indicates a mixed long-range air-defense inventory at this regiment. Investigator reported that S-300PM replaced earlier Ukrainian S-300PS at Cape Iliya and that S-400 entered regiment service from 2016; Krym.Realii additionally reports S-300PM, S-400 and Pantsir-S1 in unit 85388, while its mention of Bastion-P should be treated as unconfirmed open-source reporting rather than firm official order of battle. ([investigator.org.ua](https://investigator.org.ua/ua/topnews/248273/))
Krym.Realii reports further regiment elements on duty near the 9th km of the Kerch-Feodosia highway and at a range between Batalne and Cape Chauda, alongside the fixed Feodosia and Cape Iliya sites. The third supplied placemark on the eastern Kerch peninsula is therefore plausible as a regiment-associated position, but I did not find public-source confirmation for that exact coordinate. ([ru.krymr.com](https://ru.krymr.com/a/prodyryavlennyy-zontik-chto-izvestno-o-rossiyskoy-31-divizii-pvo-v-krymu/33237379.html))