Scalzi, J: Old Man's War

At seventy-five years old, John Perry is after a fresh start - so, naturally, he joins the army. Earth's military machine can transform elderly recruits, restoring their lost youth. But in return, its Colonial Defence Force demands two years of hazardous service in space. This is how Perry finds himself in a new body, crafted from his original DNA. A genetically enhanced and upgraded new body, ready for battle.

But upgrades alone won't keep Perry safe. He'll be fighting for his life on the front line as he defends humanity's colonies from hostile aliens. He'll pay the price for his choices, and he'll discover the universe is even more dangerous than he imagined.

John Scalzi is one of the most popular and acclaimed SF authors to emerge in the last decade. His debut Old Man's War won him science fiction's John W. Campbell Award for Best New Writer. His New York Times bestsellers include The Last Colony, Fuzzy Nation, Lock In, and also Redshirts, which won 2013's Hugo Award for Best Novel. Material from his widely read blog Whatever has also earned him two other Hugo Awards. He lives in Ohio with his wife and daughter.