The man in the center is general Friedrich von Neumann, CO 712 ID in 1944. Now, the officer on the left wearing the moustache is the one that I'm thinking of. He appears to be wearing Russian insignia on his officer's cap. I think that he is a captain. I cannot identify the medal that he wears under his collar.
In 1944 the Ostbataillon 628 was subordinated to the 712 ID and served within this division as I/GR 745. At that time a Captain Nikolay Riebikov was the CO of the Ostbataillon 628. Is that him in the photo?