An adaptation of the John Scalzi science fiction novel "Old Man's War." Released in 2005, the novel tells the tale of a futuristic army, the Colonial Defense Forces. An intergalactic Earth military, the CDF's soldiers are placed in updated versions of their own bodies and have their DNA enhanced by nanotechnology. At age 75, retired writer John Perry enlists and is given the gift of youth at the cost of military service. The original novel was followed by three sequels, "The Ghost Brigades," "The Last Colony" and "Zoe's Tale."