The Knight and Her Emperor summary:
Pollyanna is an unremarkable girl in a noble family—so unremarkable her parents send her to military conscription hoping she'll die quickly in battle. Left only with her wits and her strength, Pollyanna fights to rise up in the ranks. One day, this talented but overlooked knight meets an ardent king, one who finally acknowledges her worth. Moved by his dream for unity, Pollyanna vows to fight for him. But now the young king is slowly realizing this stalwart knight has also conquered his heart... (Source: Tapas)