OK the film was terrible and this was the guy who invented Scientology, however the book gets decent reviews and for 96p on Kindle it must be worth a read if you like science fiction.
"This has everything: suspense, pathos, politics, war, humor, diplomacy and intergalactic finance." Publishers Weekly"
"In the year 3000, Earth has been conquered by nine-foot-tall, gas-breathing alien invaders called Psychlos. The few surviving humans are treated as nothing more than pack animals worked to death mining the Earth of all its resources. But a small band of rebel humans, led by Jonnie Goodboy Tyler, vow to fight back against impossible odds and reclaim their planet.
"In the book's introduction, Hubbard states: "When I started out to write this novel, I wanted to write pure science fiction. Science is for people. And so is science fiction." If "Battlefield Earth"'s phenomenal worldwide popularity is any indication almost 7 million copies sold in 26 different languages -- it's safe to say that he succeeded. Considering the quality of the story ("Battlefield Earth" was voted as one of the top three English-language novels of the 20th century in a nationwide Modern Library reader's poll) and the tender loving care that went into the production, this 20th anniversary edition is more than pure science fiction. It's pure literary gold." Paul Goat Allen - Barnes & Noble"
"Over 1,000 pages of thrills, spills, vicious aliens and noble humans. I found "Battlefield Earth" un-put-downable." Neil Gaiman
"A terrific story." Robert A. Heinlein"
"The pace starts fast and never lets up." Atlanta Journal-Constitution
"If you like the kind of fast, unrelenting 'Raiders of the Lost Ark' action, then this is the book for you. It's a real page turner." Rocky Mountain News
"An unrelenting, whooping good yarn" Los Angeles Magazine
"An epic science fiction adventure, the absorbing story captures the mind and imagination." Orange County Register