Simo Häyhä - "White Death."

The things you come across the internets. Being a former Marine, I'd been well versed in the stories of Carlos Hathcock, but I'll confess I'd never heard of Simo. Quite the tale.

Simo Häyhä - Wikipedia, the free encyclopedia:

"Simo Häyhä (December 17, 1905 – April 1, 2002), nicknamed 'White Death' ...by the Soviet army, was a Finnish soldier, and has the highest recorded number of kills as a sniper in any major war.

...In temperatures between −20 and −40 degrees Celsius (−4 and −40 degrees Fahrenheit), dressed completely in a white camouflage suit, Häyhä killed over 540 Soviet soldiers.

The unofficial Finnish frontline figure from the battlefield of Kollaa places the number of Häyhä's sniper kills over 800. A daily account of the kills at Kollaa was conducted for the Finnish snipers. Häyhä used a Finnish variant, M/28, of the Soviet Mosin-Nagant rifle (known as "Pystykorva" rifle, meaning "spitz"), because it suited his small frame (5 ft 3 in/1.60 m). He preferred to use iron sights rather than telescopic sights to present a smaller target (the sniper must raise his head higher when using a telescopic sight), to prevent visibility risks (a telescopic sight's glass can fog up easily), and aid concealment (sunlight glare in telescopic sight lenses can reveal a sniper's position). Another tactic used by Häyhä was to freeze the snow in front of him so that the shot wouldn't puff the snow, thus revealing his position. He also kept snow in his mouth so that when breathing he wouldn't reveal his position.

Besides his sniper kills, Simo Häyhä was also credited with as many as two hundred kills with a Suomi M-31 SMG, thus bringing his credited kills to at least 705. However, the latter claim has never been substantiated. All of Häyhä's kills were accomplished within 100 days, prior to injuries caused by an enemy bullet. Häyhä's record of an average of 5 kills a day, almost one kill per daylight hour of the short winter day, is unique, and he was called unstoppable by the Soviet Army.

...When asked in 1998 how he had become such a good shot, he answered, "Practice.""