Lady Knight (Protector of the Small Quartet, Bk. 4)

Kel has finally achieved her lifelong dream of being a knight. But it's not turning out as she imagined at all. She is torn between a duty she has sworn to uphold and a quest that she feels could turn the tide of war. . . .
"Unrelentingly realistic in its depiction of the horrors of war . . . Pierce provides exquisite details of the weaponry, topography, and culture of her world, and her control of a voluminous cast of characters is masterful."
--VOYA