I'll be graduating from the Louisiana State University at Alexandria ADN program next month. The campus is about an hour away from Ft. Polk, similar to the distance to the NSU campus. As another poster mentioned, NSU does offer some LPN - RN/ADN/BSN distance learning courses at Ft. Polk, but some must be taken in Natchitoches.
We have quite a few LPN - RN students in our graduating class. They started on the accelerated track during the summer of '05 and will finish with us ... 3 semesters later. The only obstacle for your getting into either the NSU or LSU-A programs is that both require at least a year of practice as a licensed LPN
for admission to the accelerated programs.
Considering that you already have a B.A., you may actually have a number of the prerequisites for admission to a standard ADN (or BSN) program. I had a B.A. and an M.A. when I began my ADN program and It's taken me 5 semesters to finish. Only 2 of them were primarily prerequisites. Your mileage may vary. If you've taken intro. chemistry and lab, college algebra, and the first anatomy/physiology class/lab - then you are eligible to apply for clinicals.
Here's a link to the LSU-A Nursing page: http://nursing.lsua.edu/
I suggest that you review the links on that page and see if it's something you might consider. The "Application for Nursing 1016" lists the prerequisites for admission to the clinical component.
And: Here's a link to the NSU nursing page: http://www.nsula.edu/nursing
You can review all your options at that school with the drop-down menus at the top of that page. NSU, as you'll see, offers a BSN degree as well as an ADN. They also offer classes at Ft. Polk, Alexandria, and Shreveport.
Now.... hopefully this at least leaves you a little less in the dark about what might be available to you down here. Give a yell if there's anything I can clarify.