With respect a bit too restricted a view, Vepe
"Well, to put it simply: Finland used German-made planes"
Not only!
Don't forget :
Gloster Gamecock and Gladiator, Fiat G-50, Caudron 714, B239 Buffalo, Fokker DXXI and CX ,
Fokker FVIIa,and FVIII, Hawker Hurricane, Bristol Blenheim,
Westland Lysander, Avro Anson, Airspeed Envoy, Curtiss H-75, Curtiss P-40, MS406, MS 410,
Aero A-32, Koolhoven FK 52, various captured Russian AC, and others I have not added.
Not to mention Finnish made VL Myrsky Fighter
and VL Humu Fighter - Finnish manufactured close copy of the B-239 Buffalo
Just for the sake of perspective.
Cheers
Kopfdorfer