Why not just let the military pay for your school? If you're willing to deploy it may as well be as a doctor. All services are in need of MD's so there are many programs available where they'll pay for your schooling and you go into the service as a doctor on active duty. You may as well go...
Pashto is one language that the military needs translators for. It is a really new language and the grammatical rules aren't in concrete yet which makes it extremely difficult to teach. The washout rate at the Presidio is really high for it. Other languages that come a close 2nd are Farsi...