Considered the deadliest sniper of all time, Simo Hayha joined Finland's Civil Guard at the age of 17 and quickly established himself as an excellent marksman. It was here that he honed his skills with the Mosin-Nagant, developing a talent that the Soviets would soon come to fear.
Hayha regularly practiced his warfighting craft by accurately firing his bolt-action rifle 16 times per minute at a target 500-feet away — which is a challenging task.
In 1939, the Soviet Union invaded Finland in what would become known as the "Winter War," or the Russo-Finnish War.
Although the Finns were highly outnumbered, they had the home-field advantage and turned to guerrilla-style fighting to defend their territory from the encroaching Red Army.
In the beginning, Hayha found himself fighting against an enemy force of 4,000 with just 31 other men at his side.
On Dec. 31, 1939, Hayha scored 25 kill shots while dressed in all white to perfectly camouflage himself among the snow-covered terrain. The talented marksman would stalk his targets in freezing temperatures for several hours. Using the surrounding snow, Hayha packed himself deep within the frozen ground to decrease his chances of being noticed.
Hayha preferred using iron sights instead of optic scopes as other snipers had grown to favor. Although it was harder to get a fix on a target, using iron sights helped him avoid detection from light reflected off the scope.
As Hayha tallied up his kills, he was given a nickname that would write him into the history books — "The White Death."
He tallied 505 kills, the highest count from any significant war. All of the kills were accomplished in fewer than 100 days — meaning he averaging over five per day. Hayha ended up getting wounded in the war; shot by an explosive bullet which nearly took off his lower left jaw.
He survived the wound and continued to live a long life. Hayha passed away in a veteran's nursing home in 2002 at the age of 96.