The Honor of the Queen — David Weber

RIGHT WOMAN, WRONG PLACE

It's hard to give peace a chance when the other side regards war as the necessary prelude to conquest, and a sneak attack as the best means to that end. That's why the Kingdom of Manticore needs allies against the so-called "Republic" of Haven--and the planet Grayson is just the right strategic place to make a very good ally indeed. But Her Majesty's Foreign Office had overlooked a "minor cultural difference" when they chose Honor Harrington to carry the flag: women on the planet Grayson are without rank or rights; Honor's very presence is an intolerable affront to every male on the planet.

At first Honor doesn't take it personally; where she comes from gender discrimination is barely a historical memory, right up there in significance with fear of the left-handed. But in time such treatment as she receives from the Graysonites does become wearing, and Honor would withdraw if she could--but then Grayson's fratricidal sister planet attacks without warning and she must stay and prevail, not just for Honor's honor, but for her sovereign's, for
THE HONOR OF THE QUEEN