Old Man's War is a space war science fiction novel written by John Scalzi. The story takes place in a future where elderly people can join the military and have their consciousness transferred into genetically enhanced bodies. The protagonist, John Perry, joins the Colonial Defense Forces and finds himself in the midst of an interstellar war against various alien species. Old Man's War is a thrilling and thought-provoking book that explores themes of identity, mortality, and the ethics of war.
