From Barnes & Noble
The Barnes & Noble Review
Bifocals, denture fixative cream, and an AARP membership card are definitely not required to read John Scalzi's brilliant debut novel, Old Man's War -- a story about a group of septuagenarians (a.k.a. the Old Farts) who, with the promise of a new life, join the Colonial Union army and leave Earth forever to do battle against the many enemies of humankind.
When John Perry turns 75, he does two things: He visits his wife's grave and he joins the Colonial Defense Force. The CDF's enlistment contract is incredibly tempting. When a person reaches retirement age, all they have to do is give up all their worldly possessions and promise never to return to Earth. In return, elderly recruits get to take advantage of the Colonial Union's secretive therapy, which somehow reverses aging. In essence, the soldiers exchange a few years of military service for a new life on one of the Union's many colony planets. Without the faintest clue of what he's really getting himself into, Perry realizes quickly that he has just signed up for "an all-expenses-paid tour of hell." With a brand new, tank-grown, super-modified body -- green skin, cat's eyes, built-in cranial computers, etc. -- Perry and his ultra-human cohorts travel from planet to planet leaving dead aliens in their wake. All's well until Perry sees a very real and very familiar ghost…
The overly obvious comparisons to Robert A. Heinlein's Starship Troopers aside, Scalzi's first novel is reminiscent of another genre master: Ben Bova. Effectively blending hard science concepts with powerfully moving interpersonal intrigue, Old Man's War is both a compelling pedal-to-the-metal science fiction thriller and an endearing love story. Paul Goat Allen
From the Publisher
John Perry did two things on his 75th birthday. First he visited his wife’s grave. Then he joined the army.
The good news is that humanity finally made it into interstellar space. The bad news is that planets fit to live on are scarce—and alien races willing to fight us for them are common. So: we fight. To defend Earth, and to stake our own claim to planetary real estate. Far from Earth, the war has been going on for decades: brutal, bloody, unyielding.
Earth itself is a backwater. The bulk of humanity’s resources are in the hands of the Colonial Defense Force. Everybody knows that when you reach retirement age, you can join the CDF. They don’t want young people; they want people who carry the knowledge and skills of decades of living. You’ll be taken off Earth and never allowed to return. You’ll serve two years at the front. And if you survive, you’ll be given a generous homestead stake of your own, on one of our hard-won colony planets.
John Perry is taking that deal. He has only the vaguest idea what to expect. Because the actual fight, light-years from home, is far, far harder than he can imagine—and what he will become is far stranger.
The Washington Post -
Paul Di Filippo
Scalzi's imagined interstellar arena is coherently and compellingly delineated (although after two centuries of intervening history, I question Perry's familiarity with such 20th-century icons as Denny's restaurants and the Super Bowl). His speculative elements are top-notch. His combat scenes are blood-roiling. His dialogue is suitably snappy and profane. And the moral and philosophical issues he raises, while not as deeply plumbed as in Joe Haldeman's classic The Forever War (1975), still insert useful ethical burrs under the military saddle of the story.
Library Journal
When humanity reaches the stars, it discovers that it must defend its claim to new planets against alien races with similar expansionist tendencies. To ensure the expertise of its soldiers, Earth creates the Colonial Defense Force, an army of men and women otherwise classified as senior citizens, who give up their lives on Earth for an uncertain and perilous future among the stars. Scalzi's first novel presents a new approach to military sf, boasting an unusual cast of senior citizens as heroes. A good choice for most libraries. Copyright 2005 Reed Business Information.