I was not expecting to be so savage and ruthless. It was quite riveting.
Surprisingly, not as good as the movie. His direction of the book was to not have a person you really cheer for, whereas, the movie made Rambo the underdog who we rooted for. I highly recommend skipping the author's forward at the beginning, as it contains spoilers. (Why he would do that is beyond me.) You can skip the spoilers between 10:00 and 11:15, or skip to chapter 1 at 14:30.
This is an excellent book and I highly recommend it.
Loved it....the film was good, but this is better...very deep, very dark .