Links that answer your questions

Links that do a better job than we can.

The Type A-2 Flight Jacket Web Page: The best site on the web for info about the A-2. Also has some info on crusher hats.

Aviation Wings and Badges of World War II: All you'll need for wings and badges from many different countries.

Army Ribbons: This is a commercial site, but it covers all the ribbons you might run across.  It also details which are eligible for stars, oak leaf clusters, and other devices.  Link updated (6/14/11).   EzRackbuilder - A related commercial site.   It's a nice application to show you the proper order for assembling your ribbons.

WWII Dog Tag Information: Dog tag information explained - Link updated (6/14/11).

Will add others as requested (subject to moderator approval).