The High Crusade — Poul Anderson

Baen Books, 1991. Stated first Baen Book printing, August, 1991. (ISBN 0-671-72074-0) Near fine tight copy, near fine wrappers. "Everyone know that Poul Anderson is one of the best: they're wrong - he's better!" - Jerry Pournelle. Invaders from space, meet your match. What the aliens see: a blue-green orb, occupied by bipedal aborigines with early pretechnical civilization, a farm-oriented economy, population scattered in small groupings - a world ripe for the plundering. They choose one moderate population cluster to serve as a bridge head. What the Villagers see: Demons! They may be crude, but if medieval villagers know one thing, it's how to combat demons... Science fiction.