Killing russian soldiers since the winter war.

Simo Häyhä was a Finnish military sniper in World War II during the 1939-1940 Winter War against the Soviet Union. He used a Finnish-produced M/28-30, a variant of the Mosin–Nagant rifle, and a Suomi KP/-31 submachine gun. He is believed to have killed over 500 men during the Winter war, the highest number of sniper kills in any major war. source[en.wikipedia.org]