Why do you identify yourself by your sexuality? Identify yourself for who you are ffs, not by who you like to pump.
I dare say that scandal will surround you in your forthcoming career. If you feel the need to openly declare your sexuality or identify yourself by such then I dare say the armed forces are not for you. You will only perceive issues where none exist and create disharmony, ending in a tabloid centre spread starring yourself and how you was hounded out of a job you loved etc etc.
Be yourself and people will accept you for what you are. They may think you are a good egg or may think you are a total chiseller. That will be down to your personality though, not your sexuality.