Old Man's War - John Scalzi
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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 . . .
