Simo Häyhä, often referred to by his nickname, The White Death, 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.