Here is something to consider. Army Brigades have staff JAG's for all sorts of legal matters. Army Brigade (NG and Reserves included) deployed to contingency theater, JAG goes too. Then what do you do with your private practice for the 15-18 months you are activated for training, deployment, and reintegration?
If you want to go to cool destinations, take a vacation. That whole "Join the military, see the world" ideal is a fantasy. Join the military, see Iraq/Afghanistan/Kosovo, period.