Absolutely anything on the website Badass of the Week ([link]http://www.badassoftheweek.com/[/link]), while it's authentictiy is quite obviously dubious, the writer does take the effort to do plenty of research, and in any case is worthy of all the "holy shit"s the planet has to offer. Some of the things humans have done are beyond comprehension. My absolute favourite, however, are
Audie Murphy and
Simo Hayha.
Audie Murphy is probably best known for the film To Hell and Back, in which he plays himself, depicting his career during World War II. What is not as well known is that he specifically requested that his feats be
toned down in the film, otherwise he would risk being called a liar. Yes, what he actually did was too badass to be shown in a Hollywood film. One only needs to look at the amount of decorations he received to understand that.
As for Simo Hayha, he was one of the many people called to arms when the Soviet Union attempted to invade Finland, the same Winter War mentioned in this thread. In it, Hayha become quite probably the deadliest person in history, killing more than
seven hundred people in a war that lasted about a hundred days, most of the them using an old hunting rifle with iron sights. The Russians were
terrified of him and did everything they could to stop him. They sent soldiers after him; Hayha killed them. They sent a specialist team of anti-sniper snipers after him; Hayha killed them. They sent fucking
artillery strikes against where they thought he was; Hayha escaped, then killed the artillery strike. Then he was shot in the face with an explosive round, which not only didn't kill him, he was fit and ready in a few weeks. Unfortunately, by then the war was over (I like to think the Russians surrendered because they heard Hayha was back).
EDIT: Ninja'd on Hayha. Which is good, because more people need to know who he is.