"The first newest S-350 Vityaz air defence missile systems have been added to the Russian air force's arsenal. [The systems] have recently been deployed to the training centre of the anti-aircraft missile forces in Gatchina [a city in the Leningrad region]," the ministry said in a statement.
The ministry added that the centre had already run tests with the S-350 aimed at detecting and destroying conventional hostile aircraft.
According to the ministry, the air defence missile systems will help make the air force two times more effective in countering cruise missile strikes and replace the older S-300PS system.
In mid-January, the ministry said that Russia's Leningrad region would be the first to host the air defence missile systems.
The S-350 was developed by the Almaz-Antey concern and first showcased at the International Military-Technical Forum Army-2019.