Disclaimer: I won this book in a competition.
Cale starts off as a bit of a limp character, who seems to not want to be in the army and doesn't even want to fire a gun, but he does toughen up as the book goes on, as he tries to get home to his wife and baby daughter.
It is evident that Mr Lerma was in the military from a lot of the terminology, which is important when writing about situations such as this.
I have subtracted one star because there are too many instances of practically nothing going on, which slows the flow of the book down too much. Luckily it never lasts long and we get back to the bloodshed and suspense.
As the first in the series it seems more of a set up for the rest, which is even better from what I've read so far. If you like soldiers and zombie then it is a good addition to your library.