Help please!

I’ve been searching for the past hour for a manhwa about the story of a female knight (red short hair and very masculine) who gets acknowledge by the emperor (blond longish hair definitely less buff than the girl and very handsome but in a feminine way). I don’t remember much since i’ve read it a few years ago but the girl has to enroll to the military because she’s forced by her awful family, which hopes for her to die in the war. Of course she stayed alive and thanks to her abilities she was able to both get back to those who wronged her and to get a position close to the emperor.