The designation is 19A I believe. The Zulu id is for SMG/CSMs...isn't it?
I know the 19D species quite well actually. Worked with a bunch in the RSTAs that the Division now has. 19Ds worked quite well with the 11Bs in the BN (hey they basically got the same mission now a days), just as long as the Cav guys didn't say "if you ain't Cav, you ain't $#!%" too much.
I have a buddy who came down on orders for drill, we give him a hard time about being a drill for a bunch of 19Ks (he didn't like that at all).
Good luck on the G to G, just make sure you know what you want if you become commissioned (less Soldier time, more staff time). But if it is time for a change why not?
Ft Sam Houston? Nice, real nice, I hope you are taking full advantage of that post.
Hope all is well, hope you get better soon.