
This book is military science fiction. That may have been related to why I put off reading it for so long. The book was not what I expected. Which probably says a lot about my lack of experience with reading in the sci-fi genre.
The set up for the book: John Perry is seventy-five years old and he is leaving the planet Earth behind to fight for the Colonial Defense Forces on other planets. And how can he do that at his age? Because the CDF will reverse the flow of aging. No one on Earth knows how this is done, but the volunteers are willing to risk military service and its dangers for a chance at a new life.
Several of the science fiction books I have read in January and February deal with colonization of other planets as a remedy for existing problems on Earth. Each handles it in different ways. In this case, the development of the military to protect colonists is explored, including themes related to senseless violence and the mindset of the military. I do not see that the military is glorified; neither is it vilified. Moral dilemmas are examined. I like that the book does not seem to preach or offer answers. It poses questions and allows the reader to chew on the issues while enjoying a good story.
I also appreciate the characterizations in this book, especially the main character who tells the story. He is a pretty normal guy, intelligent, thoughtful. This makes him easy to relate to, to sympathize with.
I found the themes relating to age most interesting. Being at an age when I can sympathize with a decision to extend one’s life or at least experience the end of one’s life in better condition... it hit closer to home.
Scalzi was clearly influenced by and paying tribute to Robert A. Heinlein, as he indicates in the acknowledgments section at the end of the book. Many reviews note a similarity to Starship Troopers by Heinlein. I have not read that book (but have seen the movie, which I understand is not all that close to the book). I now have added Starship Troopers to my want list.

This is my first e-book of 2013 and only the 3rd book I have read on an e-reader. The book is still in print in a mass market paperback edition and a trade paper edition. And of course as an e-book.
A list of Scalzi's publications at his website, Whatever.
I read this book as a part of the 2013 Sci-Fi Experience at Stainless Steel Droppings. The event began in January and runs through February. The Review Site can be found here; check out other bloggers reviews and related posts.