Adventure, romance, tragedy, and humor. I enjoyed the heck out of this book. It uses The Odyssey as it's basic structure: a man coming back from war 15 years (and many adventures, some of which we read about) later, but knowing that is not necessary to enjoy it. The characters are genuine and well-realized. The background (orbitals and ships in Earth vicinity in the near future) is not tremendously novel, but the author works to make the various communities the hero visits seem authentic. Recommended to anyone looking for a fun read.