Could it be that a small part of you hopes that outing her with the military will be one last desperate attempt to get her to come back around to you?
If so, I think outing is a waste of energy and drama. She is much more useful to you and your D if she makes money and succeeds.
She's comfy being low, so crushing her career just reinforces that she's meant to live low.
If they just PCS cheaters and move them elsewhere, it really doesn't provide the therapeutic process she needs to address the root of the problem. (Perplexing, actually, that this is the solution... It's almost as short-sighted as moving a pedophile priest to a different parish.)
I appreciate your views on morality, and I really wish more of the world acted with morals in mind. But the reality is that our taxes support and our children are subject to all kinds of lecherous beasts in the world.
Rock bottom will be to cut her loose. Cheating will no longer be an addiction because there will be no one to cheat on.
Don't get me wrong... I wouldn't weep for her if you outed her. But, I really think it will benefit you and your D in the long run if she stays on her career path, makes money, and contributes to D's ivy league education.
