Swarm - David Scott - Bog

Gorat has long dreamed to unify the disparate orcish tribes and bring the benefits of civilization to his people, but this would threaten the balance of power that has kept a generation of peace among orcs, elves, and humans. He has a plan to negotiate a new balance, but this must be cast aside when an unsuspected threat falls from the sky. An army of constructs, stronger and smarter than any golems ever built, threatens the sovereignty of all organic races. If ancient enemies can't band together, they will have no hope of resistance.