This is a fast paced doomsday book that will appeal to those who enjoy a good combat book with Zombies (YAY!). It is written in a diary form that is easy to follow. I didn't read the first book and I think I need to go back and track down a copy. It didn't hurt the story since the beginning of the book gave a little bit of back ground on that one. There are a few moments of humor as well. I know my nephew in the army is going to enjoy this one.