Here are a few scans from the U.S. Army Aviation Digest which I thought might be of interest to this forum's members. One of them sheds some light on when Indian tribe names were adopted, while another one indicates when exactly the tri-service system came into being.
Stickied. Thanks for these!
The objectives of Army Aviation:
Its too bad Stargazer no longer comes here. Now that we can host bigger pics I would love to see higher res versions of these.