This sounds like a classic mental disturbance. A warrior who cannot live with his actions as a warrior. He is not that person, he is someone else. Someone who never did those things. Having decided that he wasn't that person, it is a small step to never being that person in the first place. He will remember feelings that he had as a child. Feeling are easier to remember than actions. He has emotional pain, where did it come from? From what he was doing, or by transference into what he didn't want to be.
This is exactly what my friend Bill did. He put in a number of tours in Viet Nam during his 10 years in the Marines. He saw a lot of combat. He was unable to live with that and decided that he wasn't that person, he was a woman who had never done those things. He remembered feelings that he had as a child. According to his sister, there was never any manifestation of those feelings. He was in all respects a normal little boy. He just didn't remember it that way. He remembered going to the toy store wanting a doll. He cried for a truck. He just remembers it differently.
This is a mental escape from a painful reality. Changing sex won't fix Beck's underlying pathology. When he figures out that it didn't work, he will have no alternative but suicide.
And you back up all of these conclusions with your education, training, degree, certification and experience as a mental health professional dealing in this kind of mental problem?
Or, you are just a lay person with no real understanding or knowledge about this than what you want to believe you have.
You don't have anything to support your opinion.