I recently read Day by Day Armageddon : Beyond Exile and I think that this is perhaps the best zombie literature out there. I have read several more zombie books recently and I think the Day by Day series is by far the best. The character development is the best, it’s the most realistic, dark and perhaps the best researched set of books out there. Instead of having surviving military people just become mindless raiders, the book is actually about people who try to live and defeat the living dead around them, often using cutting edge military equipment. Stuff like satellites, predator drones, aircraft carriers, laser guided bombs and so on.
The author is an officer in the military and the amount of detail and research he uses about military equipment and tactics really makes the book way more interesting. The characters seem pretty real since they are not cartoonish or one dimensional.
There is a bit of conflict with other living people but it lacks any Romero-style message or social commentary. Most people seem to be into joining or being part of what is left of the military and banding together for protection rather than fighting each other road warrior style like in most post apocalyptic novels. The series is a great read and I am looking forward to the next book in the series.