Old Man's War

At seventy-five, John Perry does what many old people on Earth do: he signs up with the Colonial Defense Forces, which offer a young new body in return for years spent defending humanity's colonies in a crowded and hostile galaxy. John Scalzi's military science fiction series follows Perry and those around him: The Ghost Brigades turns to the special forces built from the DNA of the dead, The Last Colony sends Perry and Jane Sagan to lead a new colony, Zoe's Tale retells that story through their adopted daughter's eyes, and The Human Division and The End of All Things widen into the politics between the Colonial Union, Earth and the alien Conclave.