You don't need to be in the military to go to law school. Think about it this way:

You go to law school now, you pay the current prices, and you use financial aid to do it.

-or-

You join the military and do everything that comes along with it, then when you get out you use the money you earned to pay for 4-years-from-now prices for law school.

Sure, joining the military will keep you from having to pay off student loans. But you will be starting law school four years later and college prices go up much quicker than inflation. Then you'll be out of law school four years later than if you didn't join up and you will by no means be well on your way to amassing net worth.

Sure, taking out student loans will put you massively in debt. But the total billl for school will be cheaper. You'll be done with law school four years sooner and presumably making a bunch of money. In the four years you get from not joining up, you can probably make enough to break even.

If you're all up on defending your country, patriotism, etc, then by all means go ahead. But don't let the dollar signs be your deciding factor. There are plenty of ways to pay for college that don't involve signing your life over to the government and possibly facing combat. I'd be more worried about it now that we're going to be in Iraq and Afghanistan for the forseeable future and our president sure does seem willing to enter more conflicts. Maybe wait until after the election.