My name is Mathias Smith, I'll save you the whole monologue about my tragic origin story and all that tear jerking goodness. What you do need to know is not exactly simple, yet can be summed up in one word; Annihilation... Look, all you need to know is that this is no ordinary war where one side is good and the other side is evil. Shit, that would make life easier. Like how it was in WWII or in some book, hell even a comic book where good always triumphs evil and happy endings with rainbows and shit. Simple stuff, humans fighting humans... Nah, instead we've got Demons and Angels having a massive pissing match over who gets to play Big Daddy D over the entire world. Sounds fun right?