I agree with Jigsaw...I too did X-amount of years in the service...and saw good service members, deleted from service, because of their sexual preference...I knew to keep my mouth shout and my enemies very close at hand...
The Americus, is NOT, as tolerate as, other countries, this is also true...
So I agree with most, get off the "T" if you really are serious about serving your country...
You can bind with special "binding" T-shirts...that will give you the chest you desire...for a spell...
You can get a hysto...without suspicions arising, and
You can get a name change...all of which are in your powers, if you truly wish to enlist in the service...
but as was also noted...if you try to transition while in the service...unless you are out to gain fame...is a serious "NO-GO"
and an offense within the military punishable by a Dishonorable Discharge, without any hopes of returning to any Branch of the service...because your RE-Code would be 4, DQed from admission into ANY Branch of the service...
As a former member of the Armed Forces..it's really not that easy to hid your sexual preference, because someone is always going to question something about, "like I never see you on a date, don't you like guys?" or, "We've heard some talk...and it's about a reference you made about PFC Kendell...." "Someone overheard you say something like 'Man look at the racks on that chick, what I wouldn't do...'" even though you might not have expressed this outloud, inside, silently it was expressed, and that's ALL the Military needs...is Probable Cause, to delete you from their service!
I know enough, to know that what I speak is the truth...medically you WOULD be DQed right off tha bat, because if you present yourself as a male figure with the "Top-surgery" scars 9-X's-out-of-ten...the Doctor is going to know you had cosmetic "Top surgery", and it was no medical condition...as for knowing your complete medical history...not true...they only know what you tell them...I worked in MEPS for two years...
They don't know how many abortions you've had, had many bones you broke, whether or not you suffer from migraines etc. or whether you had certain operations...if the scars aren't visible or easily recognizable, they won't know....not unless of course, you put said notations on the questionair...in which case, if you are looking to be DQed, then put everything that has ever happened to you, on that particular question sheet

I wish you ALL the luck, but you know, like the rest of us, if you are NOT going in as your biological form, you are NOT going in at all...sorry but that is just the way IT is right now...I heard someone mention, go in as a Lesbian, if you really want to serve, then that might be your best bet!