It could have been much better, the movie is actually worth watching once just for the dialog of Eddie Griffin's character and Sgt. Barkley. The problem comes in the form of awkward acting from all the cast (except the aforementioned characters) and the very predictable nature of EVERYTHING you experience during the movie. The film feels rushed and underdeveloped and very average. As the movie moves along you become a bit more attached to the characters due to the flashbacks of life before being deployed to war and good character development but overall this is probably one of the worst war movies I've seen. I give it a 5 just for Eddie though, he is great in this flick.
Review of The Walking Dead
