I found this interesting because I had read about the best sniper in the world who operated in this war. He popped off 505 Soviet Soldiers, in 100 days, during a time when the hours of daylight were very small, using a basic rifle and NO telescopic sight. Fascinating. There is an updated factoid here.
Stalin had eviscerated the Red Army and the result was rather predictable. (Despite the presence of Zhukov, but that’s a post for another day)
Dont also forget that Finland then threw its lot in with Germany to regain its lands in the continuation war and then in World War II. Complicated stuff.
That said, PISA tells you that Finland is usually the best in the world in education. Go figure. What an amazing country.