One of the many nifty things about military service is that you often have access to seminars and classes on a variety of topics, some relating to your job and some relating to life. Your command, your service's family assistance center, and your JAG office might offer financial education training on base.
If you aren't able to access any of these resources, you might want to check out Jeremy's list of 20 Free Online Finance Courses. The classes listed at the Generation X Finance website include serious, college level economics and finance classes as well as more casual personal finance offerings. I can just imagine it now, a group of you putting down the Wii and checking out MIT's Principles of Microeconomics. Let me know what you learn!