The term around these parts is remission.

If you are the spouse or child of a faculty member you get 2/3rds off your tuition state run institution undergraduate (only) program. There can be caveats like (must get a (insert level of achievement) grade or higher).

As long as a person is employed full time by the united states military their spouses/children should get at least remission of fees in addition to normal scholarships/awards.

I know there is always a money issue, but regardless of incentives to keep people in the military it is the RIGHT thing to do. Unfortunately the money issue is looked at first and not the RIGHT thing to do. With the federal government pulling funding from higher education, states pulling funding from higher education, grants and awards dwindling, and some state schools considering privatizing this is an idea that won't likely make it out of the barn.