I recall First Blood being an excellent book when I read it the first time. The book has so much more death than the film and explains the long build up to Rambo snapping. The pursuit through the woods is gripping and when the tables are turned and the hunters become the hunted, its hard to put the book. I the book you get a real feel for Rambo's constant and worsening pain and what drives him on. Also, that ending above isn't quite what happens in the book.