Another photo of the dead SS guards at Dachau. These appear to be wearing some sort of camo smock or jacket over a regular uniform.

Dachau liberation

Two GI's and a former inmate remove the body of an SS man from the Dachau moat. I think this is wookie's photo. Note the camo uniform. Some of the guards were wearing these uniforms, others the more standard one. 

Here are some of the executed guards at Dachau wearing the more standard uniform. Why the two different styles were present I don't know. Maybe the simple explanation is that some of the guards thought it looked cool to wear camo.