The Defiant Agents - Andre Norton - Bog

Travis Fox, once the unwilling captive of the runaway spaceship Galactic Derelict, has volunteered - eagerly this time - for the mission to colonize Topaz. But when he and his fellow Apaches find themselves reverting to the ways their ancient warrior-race, just as the expedition from Russia has been transformed into a Mongol Horde encamped across the mountains, it becomes clear that more than their own lives is at stake. "The conflicts of these groups with each other, with nature on a hostile planet, with Russian puppet-masters and with an even more dangerous force from beyond the stars make a fine heroic narrative, imaginative, inventive, told with the compelling pulse of the true storyteller."