Fallen Dragon by Peter F. Hamilton

In a future where interstellar corporations dominate, a disillusioned soldier named Lawrence Newton finds himself caught between his duty and his conscience. Tasked with enforcing corporate interests on a distant planet, he grapples with the moral implications of his actions as he encounters a local resistance movement. As he becomes entangled in their struggle, Lawrence is forced to confront his past dreams and the harsh realities of the universe, ultimately questioning the true cost of power and the possibility of redemption.

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