While any war themes seem really well, the storyline is what concerns me the most...

...They are opposed by a Schutzstaffel (SS) officer who is attempting to raise from the dead a supernatural army of crusaders...
My friend told me about this anime back in October 2008 and while the non-textual and minimal amount of dialogue trailers did interest me a whole lot, I might reconsider if the supernatural have anything to do with it. Hopefully, it won't turn out to be like Gungrave's supernatural mess...