Honor Harrington: Field of Dishonor by David Weber. It's the fourth Honor Harrington novel, sort of military space opera with a female Horatio Hornblower. This fourth book was rather odd, because it doesn't feature a single space battle - the whole thing deals with the aftermath of the previous book and Honor's conflict with another officer. Prettty interesting, though I won't pick up the next book for a couple weeks or thereabouts.