[Bubba Ho-Tep]

You blind?

No, but you're badly informed.

Here's the original photo, uncropped and taken in a Philadelphia studio[:

Here's the United States Army recruiting poster that used that image:

And here's a long article about the photo and its misuse: Retouching History: The Modern Falsification of a Civil War Photograph

[Idabilly]

That does make sense. Segregation of colored troops was a Yankee tradition.