The introduction of “mosters” made the story too sci-fi for my taste. The author’s intentional non-use of other profanity was very distracting with the awkward language chosen: “You really saved my bacon”. then in the last book had a few uses of profanity that actually fit the characters personality. Soldiers don’t use childish language to describe situations as done in the book. Overall, the story was childish and good for a 13 year old, but not older.