If you loved
Books like Old Man's War
Old Man's War by John Scalzi: what to read next, and why.
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The Forever War
A grimmer, more angry classic that asks what a never-ending space war does to soldiers.
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Starship Troopers
The older model for the genre, with a more serious and militaristic look at service.
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All Systems Red
Another fast, funny and snarky narrator, with a lot of heart and a much smaller scale.