The Burning Bridge by Poul Anderson, Science Fiction, Adventure, Fantasy

Set against a backdrop of interstellar exploration, a fleet of fifteen ships embarks on a mission to colonize Rustum, a barely habitable planet six parsecs away. The expedition is driven by the desire of the Constitutionalists to escape Earth's oppressive regime, while Earth’s overlords aim to rid themselves of this stubborn group. The journey promises prestige for a successful colony, yet the stakes are high, as failure could eliminate a persistent challenge to authority. With dwindling interest in exploration, this mission represents a significant gamble for both sides.