The leader of Germany in 1930s-1945ish. (not sure the exact dates give me a break) either way, he may have done many bad things, but I just have to say that the whole blitzkrieg (lightning war) was a little ironic. In World War one (aka the great war at the time) Germany decided that it wanted to take over France, and from what I understand France secured the border leading into Germany, so the German Army marched right through Belgium (neutral I believe) and came up behind the French army. this happened again in World War Two. They also swiped Paris right behind the French military's back in one of these wars.
Adolf Hitler killed many innocent people, but he was actually a genius. (no, I'm not a Nazi, trying to be UN-biased) and it's been awhile since History class so If I made a mistake feel free to correct me