They also serve

A WAR WITHIN Colonel Ray Longknife and Marine Captain Mary Rodrigo were once enemies in an interstellar war. Now they're working together to keep the peace. But can they protect themselves from an enemy they can't even see? When a bad space jump flings their starship thousands of light-years away from home, Longknife and Rodrigo make an amazing discovery: a planet inhabited by the descendants of a ship's crew—lost three hundred years earlier. As acting ambassador, Longknife is eager to welcome the planet's population back into the fold of humanity. But Rodrigo is suspicious. She senses that something is wrong under the planet's veneer of peace and prosperity. And she's right....