343 Studios has announced on their Twitter page that they, along with Dark Horse Comics, have released a new three-part series of comic books called Halo: Initiation, detailing the origins of Sarah Palmer and the Spartan-IV program. The first issue is currently available for purchase from Dark Horse Comics’ website here. For more details, Xbox Wire has posted a short summary of the back-story leading up to Initiation. You can find it here.