I'm looking for the title of a book about a human who is abducted by aliens and his brain is transplanted in an alien fighting machine or tank.

  • Hi, welcome to SF&F. Do you remember why the aliens did this? You should check out the suggestions for writing a good story-id question.
    – DavidW
    Jun 22, 2019 at 2:11
  • On a similar note, I was wondering whom the human-brain-in-a-tank was fighting. Other aliens? Humans? Something else? Do you remember if he ever got his brain transplanted back into a more normal body?
    – Lorendiac
    Jun 22, 2019 at 2:17
  • 1
    Possible duplicate of Novel from the 80s: Brain harvested and forced to fight in a war
    – LAK
    Jun 22, 2019 at 3:15
  • 1
    Apocalypse Troll by David Weber has something similar, one of the major characters is of a group that are cyborgs with brain transplants made from captured humans. Most of that part is history, though, all offscreen, and the character is the enemy of the novel.
    – Megha
    Jun 22, 2019 at 3:34
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    Answer isn't accepted yet, so we can't confirm it's a duplicate.
    – DavidW
    Jun 22, 2019 at 3:38

1 Answer 1


Most likely A Plague of Demons by Keith Laumer. The protagonist's brain is harvested by doglike alien "demons". It, along with other brains taken from dying soldiers on battlefields across the centuries, are enslaved and implanted in massive alien tanks and forced to fight in wars on distant planets.

This blurb taken from Goodreads talks about the first half of the book, before the Giant Alien War Machine part of the plot:

When John Bravais was sent on a secret mission to observe a war in North Africa he found out more than it was safe for him to know - even after he had secretly been surgically transformed so that he was as strong as a Bolo tank, and nearly as tough: Wolf-like aliens, invisible to the ordinary eye, were harvesting the brains of the fallen fighters! Brevais might have become the Ultimate Warrior, but still he was only one man against A Plague of Demons.

Apparently, it's available to read on the Baen Books site.


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