What you're looking for are photos from "USO Dances".
Here are some that I've found:
http://www.archives.gov/research/ww2/photos/images/ww2-44.jpg
http://sunsite.berkeley.edu/FindingAids/dynaweb/calher/jvac/figures/j3AG-805A.jpg
http://www.oac.cdlib.org/affiliates/images/cox/kt3v19n8s9/S99-001-017/S99-001-017.jpg
http://riddimmethod.net/images/USO-dance.JPG
http://www.cvl-22.com/82.jpg
http://www.cvl-22.com/80.jpg
http://www.cvl-22.com/83.jpg
http://www.americaslibrary.gov/assets/jb/wwii/jb_wwii_uso_2_e.jpg
http://melrosemirror.media.mit.edu/servlet/pluto?state=3030347061676530303757656250616765303032696430303432343238%5D
I also recommend is that you get some still photos or video clips from swing/war movies from the 1940's. These featured professional swing dancers dressed in uniform.
List of Movies to Look into:
Buck Privates
http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=614514
Grovie Movie (short)
http://www.youtube.com/watch?v=y82S3z6sKiM
Swing Fever
http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=625468
...and also . . .
Two Girls and a Sailor
Four Jills in a Jeep
Follow the Boys
The Canterville Ghost
Stage Door Canteen
Juke Box Joe's (short)
Swing Fever
You can download those movies here:
http://poy.no/vintage/
I hope that helps!