https://wccftech.com/wargamings-tactical-shooter-caliber-is-getting-a-closed-beta-soon-in-europe/

Wargaming and 1C Game Studios have announced that their free-to-play, third-person tactical shooter Caliber will soon get a Closed Beta phase in Europe. Testing already happened in CIS (Commonwealth of Independent States, composed of post-Soviet republics) countries, with over a million registered players who played more than 53 million battles already.

You may sign up for testing on the official website of the game.