Scalzi's First Book, and it's Entertaining Jul 22, 2008
If you are a sci-fi fan, then this book should make you smile. It is full of adventure, derring-do, and great escapes. It is not overly crass either, though the bulk of the book, as the title suggests, is centered around a prolonged war.
While reading this, it easy to make comparison's to Heinlein's Starship Troopers, and for those of us that have been in the service, though the setting is drastically different, boot camp seems eerily the same no matter the circumstances. Although here in Old Man's War, there is a bit of a twist. You don't enlist at 18, you enlist at 75. That changes things, as now you have all of that experience in your core characters. They aren't at a loss to explain the world (in this case universe) or overly naive, and that makes for an interesting take on this futuristic war.
I found this book to be a quick read, and full enjoyable. I would be up until 2AM engrossed in this novel, well knowing that I had to be awake again at 630 to go to work.
This is definitely not the most profound work out there, don't come in thinking it is going to change your life. It is, however, one of the better books that you can pick up, read, and thoroughly enjoy.