Here is the "Official" Army Organizational Insignia site: [url]http://www.perscom.army.mil/tagd/tioh/ssi/ssi.htm[/url]
Happy hunting.
You will note that the shape of III Corps patch is different than the one shown here. Echo6 was understandably confused, as the logo is almost the same - never been to Hood myself though.
I am a bit perplexed as to why an Army NG soldier would have a subdued USMC division patch on his left shoulder. That should be, as Sukebe pointed out, the patch for his current unit. Did this guy strike you as maybe a few sandwiches short of a picnic?
Incidentally, the air assault badge is awarded to soldiers who complete a ten day course in basic helicopter sling loading / rappeling operations. It is offered on dang near every major US Army installation. It is in the same category of award as the Parachutist (Airborne)wings. Basically an Army Merit Badge.
If I'm not mistaken - the Air Assault School as it stands today is a post Vietnam thing, although perhaps Vietname era guys were authorized to where it based on prior experience and in lieu of attending the school. In this case it may have been much like how COL Hackworth was authorized the Ranger Tab. This goes way outside of my expertise though. For an Army guy I think much more like a Marine when it comes to these things, though. I think it's all pretty silly. This is probably based on the fact that I live and breathe the "Heavy" Army. For some reason, tankers and the like don't feel the need for cheesy badges.
Adam