Recommendations

Books Like Old Man's War

At 75, you can join the military in a new body — but you fight a war you didn't choose, against enemies the government won't explain

John Scalzi's Old Man's War begins with a premise: the Colonial Defense Forces recruits from the elderly, because old people have the judgment of lived experience but bodies that can no longer fight. John Perry, 75, follows his wife's path and joins — and receives a new, engineered body with enhancements that make him a more effective soldier than he ever was at 25. The novel follows his training and his first combat deployments in a war for habitable planets against dozens of alien species who also need those planets. The series is military science fiction with dark humor and a genuine interest in the moral weight of a war humanity didn't start but is fighting with everything it has. If the premise, the ensemble, and the sense of a galaxy-scale war fought by people who remember what peace was like gripped you, these eight picks go to the same place.

  1. 1

    Ender's Game

    by Orson Scott Card

    The canonical military SF novel about training people to fight a war they didn't choose — Ender's Game and Old Man's War are in direct conversation: Card writes children trained to become commanders, Scalzi writes old people given young bodies. Both are interested in what the military does to the people it builds.

    Buy
  2. 2

    Starship Troopers

    by Robert A. Heinlein

    The classic military SF novel that established the genre Scalzi is working in — Heinlein's Johnny Rico joins the Mobile Infantry and fights an interstellar war against the Bugs. Starship Troopers is more politically invested in its military ideology than Old Man's War; Scalzi is more skeptical and more darkly comic.

    Buy
  3. 3

    The Forever War

    by Joe Haldeman

    The anti-Heinlein military SF classic — a soldier fighting an interstellar war discovers that time dilation means centuries pass on Earth between his deployments, and he returns to a society that no longer resembles the one he fought for. Haldeman has Scalzi's same dark humor and the same interest in what military service actually costs.

    Buy
  4. 4

    Red Rising

    by Pierce Brown

    A young man embedded in the military institution that maintains a caste system, learning its rules in order to break them — Brown's Institute sequences are directly comparable to Perry's training, and both series have the same sense of military training as the place where you discover who you are when the social context is stripped away.

    Buy
  5. 5

    The Expanse

    by James S.A. Corey

    The most realistic recent interplanetary war fiction — Corey has Scalzi's same attention to what military service actually looks like (the waiting, the bureaucracy, the relationships inside units) with a harder SF approach to the physics and a more complex political situation.

    Buy
  6. 6

    Project Hail Mary

    by Andy Weir

    Hard SF about a person doing a very difficult job under pressure — Weir has Scalzi's same sense of competent people using science and intelligence to solve problems the universe has given them, with the same accessibility to readers who don't usually read science fiction.

    Buy
  7. 7

    Redshirts

    by John Scalzi

    Scalzi's own Hugo Award-winning standalone — junior crew members on a starship discover that the recurring crewmember deaths during away missions follow a pattern, and investigate what the pattern means. Redshirts has Old Man's War's same dark humor and the same interest in what happens when people inside a genre story realize they're inside a genre story.

    Buy
  8. 8

    Dark Matter

    by Blake Crouch

    A thriller about a man who wakes up in a world where he made different choices — Crouch has Scalzi's same high-momentum pacing and the same sense of a competent protagonist working the problem with the available information. Both are the most accessible books in their respective sub-genres.

    Buy

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