I found the photo of Rehm's and his crew on Amazon. The photo is not really that clear but the flyer on the left could very well be Georg Hanke.
Hanke appeared to have somewhat unruly hair and I have shots of his feldmutze propped on his head and sticking out slightly on the sides similar to the flyer on the left.
Below is a link to my website illustrating the beginning of my research on Hanke. If this proves to be Georg Hanke this is a great piece of information!!
http://aufhimmelzuhause.com/id143.htm
Regards
Jeremy