What's Wrong with This General Being a Bitch?

She was obviously keeping peace and rescuing people a second ago, but when she opened her eyes, she was actually lying in a marching tent. The pain in her body reminded her that she had been reborn in time, and she was reborn in the body of an ancient injured general who disguised herself as a man. It's so boring to fight. That's the original owner's business. As a peacekeeper, I hate bloodshed and sacrifice. I'm talking about the royal families of various countries. Wouldn't it be nice for everyone to live a stable life? Do you want your people to have enough food, clothing, jobs, and education? Do you still want to fight? Is this what my rebirth is all about? I am still the same as the original owner... And your Royal Highness, I am now a man in the eyes of others. Brother, what are you going to do with that constipated and distressed look on your face? [Demining: This is not a pure time-travel story. The first half recalls the battlefield, and stirs up the court after the time-travel. The main line is the feelings of family and country, and the male and female protagonists have emotional lines]