Where are the US airforce and Navy ground Units

[Spec6]

I'm sorry to say it But Can you see an airforce General officer in Europe leting his comand be take over as infantry in the Army .
So were our the Airforce Battions or Sqs listed in the Game .
I can see the Airforce fielding some strange ground units that have aircraft weapons convereted to ground Use .

Same with the Naval Units were are they located or have they been intergraded into the USMC .

Rember towards the End of WWII the German Navy and Airforce had Ground units .So why wouldn't the Airforce and Navy have them in WWIII .