I began my Google image search with the intention of finding some images of old photographs of artists in their studios, and then this image popped up in my search results... it looks like an old silver gelatin print of some army insignia...and then you look at the full-size image and it is hundreds of soldiers standing in formation!! AH-MAZING!!!
These are called "living photographs," and are described as an attempt to recover national identity through imaging.
You've just got to see them for yourself. WOW.

(This one is my favorite. I need a print of this!)
Photographer Unknown, Grenzhausen, Germany "1st Field Artillery Brigade, 1st Division" 1919
Vintage Silver Gelatin Print
Newman Photo "Animated Crest 34th Division" Camp Cody, New Mexico, 1918
Vintage Silver Gelatin Print
Arthur S. Mole and John D. Thomas,
"The Human U.S. Shield" 1918
Vintage Silver Gelatin Photo PrintAll images and information came from this site (it didn't have a name!).