Yaks vs. Messerschmitts

 The event is on from
 July 20th 6am GMT (July 19th 11pm PDT) to July 22nd 6am GMT (July 21st 11pm PDT)

While flying one of these planes:

Yak-7B, Yak-1B, Yak-3, Yak-9P and Yak-9T    While flying one of these planes:

Bf-109E-3, Bf-109F-4,Bf-109F-4Trop,

Bf-109-G2, Bf-109G-6. Bf-109G-10, Bf-109K-4

 (premium planes included)
 You should get a certain amount of air kills:

10, 35 and 70 for Arcade Battles

4 and 20 kills for Historical

3 and 7 kills for Full-real battles

 Completing all the tasks you may get almost 300 000 Silver Lions (rewards’ details can be checked in your Achievements)