Ancillary Justice (Imperial Radch)

The only novel ever to win the Hugo, Nebula, and Arthur C. Clarke Awards and the first book in Ann Leckie's New York Times bestselling trilogy.
On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest.
Once, she was the Justice of Toren - a colossal starship with an artificial intelligence linking thousands of soldiers in the service of the Radch, the empire that conquered the galaxy.
Now, an act of treachery has ripped it all away, leaving her with one fragile human body, unanswered questions, and a burning desire for vengeance.

In the Ancillary world: 1. Ancillary Justice2. Ancillary Sword3. Ancillary Mercy