This is ground outside air basement where casual/tech tree planes placed on. With pre ones, they will put inside the basement (same with tanks). About this plane appeared on the picture is a Swift F.1 from United Kingdom, BR 8.3 (Realistic battle) that I show off below here. (this plane rating quite average so seems players using it are not so much enjoyable). Sakuya wore No. 1 Service Dress of Royal Air Force as an instructor. (?)
P/s: The nose of plane quite shorter by the artist or I guess sight degree?

ATTACK THE D POINT!!!