What soldier had the most confirmed kills?

Answer 1

http://en.wikipedia.org/wiki/Simo_H%C3%A4yh%C3%A4

Simo Häyhä, over 500 hundred confirmed sniper kills, and 200 confirmed kills with a machine gun. all happened in about 100 days.

Answer 2

Simo Haya, the White Death,did. He was a finnish sniper in the Winter War between Finland and the U.S.S.R. He used a unscoped moison nagant rifle. He preferred the use of iron sights over a scope because it created far less of a target for enemy sharpshooters. He has around 500 kills over a span of 100 days, averaging 5 kills a day in the sparse daylight of Finland. He was operating in temperatures between -4 to -40 f. He also got 200 kills with an SMG as well. He is credited with being the most effective sniper in the history of warfare as well.

Answer 3

Might be Heinrich Severloh....

http://en.wikipedia.org/wiki/Beast_of_Omaha_Beach

Answer 4

Sgt 1st class Dillard Johnson with 2,746 confirmed kills.