Ashes of Victory - David Weber

The People's Republic of Haven was mistaken in announcing the execution of Honor Harrington, for she has escaped from a prison planet and returned with more than half a million freed prisoners. Her return provides a much-needed lift for the Allies' morale, for the war is rapidly entering a decisive phase, and Honor finds herself at the heart of it all. Honor Harrington's escape from a prison planet has landed the woman the newsies call the Salamander once more in the heart of the war. But this time, the furnace may be too hot for even a salamander to survive.