I don't think you really ever stop fear. Heck I am just as fearful of dying as I was before I had all my training. Maybe even more so. I think you learn through training how to drive through fear by developing coping mechanisms and habits to allow you to push through it.
that is because the fear is not about the fighting, losing or even the dying itself. it is about what comes after. same for everyone as it is a great equalizer of all men. this is an issue of beliefs and origins, promises and trust more than ass kicking, my friend.