i would be an IA major. You can customize the major to incorporate all the warfighting topics that you like, with the benefit of being housed in a department with a lot of funding and greater reputation.
Odd. When I failed my first go, they immediately sent me an email. When I passed, just a green check mark. I suppose your case is an exception. I remember they were still ironing out the kinks to their new website.
IA and Chinese double major here. Your son will take a language test with interviews to determine what Chinese class he will be placed in. Taiwan Airborne has not been offered in over a decade. Also, everyone must take a year of language, Yuk or Plebe year, regardless of prior language ability...
Like others have said, Africa sounds great. However, MIADs take precedent so unless he is able to convince the scheduler to trade AA for a later slot, he will have to do AA and give up the AIAD.