S-400 Triumf
Russia's premier strategic air-defence system — documented defending Crimea and the border regions throughout the war, and a priority target for Ukrainian deep strikes.
Record
Operators
Battlefield role
Long-range strategic air defence — documented throughout the war defending Crimea, the border regions and Moscow; the outer layer of the network that has kept Ukrainian aviation back from the front, with a documented secondary ground-attack role.
Strengths
Very long-range radars and interceptors deny high-altitude approaches across a wide arc; dense integration with Pantsir point defence; the reach to threaten aircraft far behind Ukrainian lines.
Limitations
A high-value target with documented battery losses in Crimea to ATACMS and Neptune strikes; struggles against low-flying drones and naval drones beneath its radar coverage; its marketed reputation and documented performance have diverged publicly over the war.
Visual identification
8×8 transporter-erector-launchers with four large missile tubes raised vertically when deployed; accompanied by large flat-faced phased-array radar vehicles; deployed as dispersed battery sites, not single vehicles.
Documented conflict use
Engaged throughout the war from Crimea, the border regions and around Moscow; multiple documented battery and radar losses in the 2023–24 Crimea strike campaign; documented use of its missiles in a surface-to-surface role against land targets.
Branch & service operators
- Aerospace Forces (VKS)Documented