First, please allow me to say thanks for your service to our country.
In response to your question, I would suggest going to a local community college and making a visit to their career counseling department. I'm getting the feeling that you want to do something different but aren't quite sure what. Please correct me if I am wrong. I'm in a similar boat as you (although my career is not in the military). I am 47 as well and I have spent over 24 years as an electronics test engineer at my company and I just needed a change. Mid life crisis, boredom, you fill in the blank.
I went to the local community college and took a very long interest and aptitudes survey. Turns out that I need a high tech kind of field with more people interaction. I chose nursing as the one to best fit the bill. I'm graduating one month from today with my degree. Based on my clinical rotations and how much I have enjoyed it, it was the right thing to do. Hope this helps.
LW