A Female Special Forces Soldier Who Traveled Through the 1960S

Is There Any Period Story Where the Heroine Is a Soldier and I Really Don't Want to See a Military Marriage?

I want to read a book like "Seventy Years, Who Says Female Soldiers Can't Be Rogues". I really don't want to watch a military marriage where she becomes a stepmother for the hero's child, and the people in the family treat the heroine badly. Later it turns out that the heroine is the child of a military leader, and the heroine is already cheating. Can it be done?