I have a huge craving for this idea. I found it while checking out some TG caption sites. Basically, the Army is doing some experiments with genetic modification. They are trying to engineer the perfect soldier who can physically dominate anyone in his path and will follow orders to the letter. Yet, when the scientists find the right serum, it has and unexpected side effect. The subject is turned into a lush, sexy, and submissive female. But when a certain command word is spoken, the subject is turned into the ultimate soldier that they wanted. Details can be discused in PM.