I am currently serving in the US Air Force and have been crossdressing since I was very young. Obviously took a hiatus from it in basic training and started right back up in tech school before going to my first duty location. I have served for almost 8 years now and have never been outed. I have always been careful and only told the people that I knew I could trust. As for the OP question, I don't think it should matter what you do off duty, or what you wear under your uniform. As long as you aren't doing anything detrimental to the unit or the unit's morale and you can perform your job, you should be able to serve your country. Thats my opinion. However, the don't ask, don't tell policy has to do with homosexuals in the military. Some may say that crossdressing is "gay". But that is not the definition. So it would be easy to fight if you were in a legal battle over what kind of discharge you got if they decided to go that route. But that is neither here nor there, so I will wrap this up since this is getting to be really long. Jordyn, I thank you for your service and good luck in all of your endeavors. I hope that I answered your original question.
Emily