Yeah, Simo Häyhä. Look him up in wiki. Small guy, I have seen a couple of documentaries about him with interviews, very laid back and modest. He said allways that his number one skill that made him succesfull was his patience. He would crawl to position in the dark, stay put and crawl out again in the dark, no matter what happens, how hungry or thirsty. "Movement kills". We have a sniper competition in his honour here in Finland. It still cracks me up when someone says that he's not the greatest sniper ever, "because he used an smg sometimes"