Keeping or Changing Rank in T2K

[Raellus]

Let's say a captain in the Air Force finds himself grounded and out of his element, c. 2000. With very few (if any) replacement planes available, there's little to no chance of this officer serving in his previous capacity. The army/marines needs riflemen. So, the captain is "transfered" to the infantry. What would his effective rank be?

This officer probably has very little experience in ground combat and/or leading an infantry company or platoon so it wouldn't be likely his AF rank would garner him the same responsibilities in the army. Would he still be called "Captain"? Would he have to start at the bottom of the rank totem pole? I can't imagine someone who'd worked his way up the ladder for years (and/or gone to one of the academies/officer schools) dealing very well with being addressed as "private" or "spicialist" or whatever. I know that certain ranks with the same name (for example lieutenant in the army and lieutenant in the navy) aren't really equivalent. Would he pick up the army equivalent of the rank he'd held in the AF?

I just wonder how this would be handled. I imagine it would be quite common for AF, army pilots, and navy personel to find themselves stuck in a rifle company and I'm trying to figure out how to handle it.