Don't bother with an A.S. (Assuming anywhere actually offered one for physics, or even an articulated transfer A.A.). In the military you have the opportunity to take Dante's exams and other things (I believe that's what they are called). Self-study and use these free opportunities to knock out all the various humanities and general education courses you need to take. Your base is probably in cooperation with a local college somewhere. Figure out what local school (that is accredited, a community college or something) you can work with to start learning mathematics. There really isn't much more physics that you can take at a 2 year level outside Physics I and II. You should figure out how your Military Command goes about allowing students time off and such, and how tuition works, and then speak with the school they work with to finish everything that is listed as a pre-requisite for transfer students in the catalog of a 4 year physics university that you wish to attend.