Answer
Simo Häyhä's combat duration in the Winter War spanned four arduous months, from December 1939 to March 1940. During this period, he demonstrated exceptional marksmanship skills, earning him the nickname "The White Death" among the Soviet forces. With a remarkable ability to camouflage himself in the snowy terrain and utilize his knowledge of the local landscape, Häyhä became a formidable sniper, instilling both fear and respect among his adversaries.