Hellsing Ultimate
This anime is based on the Protaganist Alucard and his minion, former police woman now vampire Seras Victoria as they go around hunting and killing other vampires to protect England and other parts of Europe from the creatures that lurk in the dark. Later they figure out that the vampires that are roaming around are from an organization known as Millennium who are a group of remnant nazi's who have countless vampires at their disposal. Right now the only place you can probably watch this anime is on the internet, but since you have happen to go on this site, I can presume that you can google search it on your own.
Code Geass: Lelouch of the Rebellion\

