Thanks for the info. Around what date will I know if a deferral has been granted? I've read various threads about my chances of getting a deferral...I want to do OBGYN or peds. I've heard chances of getting deferred are worse for primary care specialties such as FM, peds, OB, etc. Is that pretty accurate?
Military match list comes out in mid-December for all services. Maybe you could find out earlier if you know someone in high places.
The Army does not make their match list as accessible as the Air Force or Navy's. But for a comparison, only 3 out of 27 received a deferment for pediatrics in the AF (and the AF is supposedly more liberal in giving deferments). Six who matched are supposed to go to Kessler, which may not even receive RRC approval (i.e. they may go to the local civilian program). For Ob/Gyn, 3 out of 13 got deferred. Family medicine was a little better, something like 17/52 were deferred. Surprisingly, ortho and pathology were the best bets for deferment this year (if you could even get in the former).
Also, realize those who've done a GMO tour and aren't USUHS have a better chance of getting a deferment; they may take 1 of those precious spots. Getting into Army peds or Ob/Gyn itself isn't a guarantee either (although I bet family med is a safe call).
My girlfriend is a class year behind me, so I thought about the options quite a bit myself. A possibility is for one of you (most likely your gf) to take a year off to do research or something and then match later. She'll then know for sure where you'll be, and can then apply strategically and do away rotations at whatever institutions are in close proximity.
Getting the deferment is tough, so I'd also be wary that if I didn't get a deferment, I'd match into an area with lots of residency programs. San Antonio (BAMC) only has the University of Texas within an hour's drive. El Paso and Tacoma also don't sound like good options. Washington DC/Bethesda, though, would be great. You also have the slight possibility of going to an AF program if there are extenuating circumstances.
Worst case scenario, you have to do 2-3 years of GMO. In the AF, it's easy to get a deferred transitional year before becoming a flight surgeon. But where you go after that is tough to say.
And, of course, the couples match is tough enough. You'd probably be interviewing way before mid-December to ensure you and your gf have enough places to rank together.