Goodluck, I am also transitioning active duty military and do sincerely wish you the best of luck in your endeavor. Bottom line, don't rule anything out just because of your GPA. It is A factor, not THE factor in admissions processes. The question I pose to myself regarding whether to apply this or next year is solely based around my transition timeline and how I will best be able to support my family. If that's not a concern for you, and you can afford either year, go to Vanderbilt Law's webpage and see what their standards. They should have all kinds of data about the admissions process and each freshman class such as the max, min, and median undergrad GPAs, LSATs, ethnicities represented, work experience, number of veterans etc. If you're ready to get out (or not and being forced out) then see where you fit in their historic data, but there truly are no black and white indicators on which school you can/can't get in to. Shoot your shot.