Not much is known about my great grandfather, as he went missing in 1944-1945. My great grandmother never remarried, and her and my grandma abandoned where they lived with only minimal things. He was never seen again after that.
However, we do have a couple picture of him.
I'm trying to get to the bottom of this mystery and I feel identifying his rank (As best as possible without color, sadly) could help figure out what happened to him. Assuming the records even still exist.
What I know about him being in the military is kind of so-so. All I've been told my grandma knew was that he was part of the cavalry and he often wore a burgundy uniform. But she was so young I wouldn't rely on that too heavily.
Hello there! As your question is related to looking for identification/information regarding military personnel, our Guide on Military Identification may be of use to you. It provides a number of different resources, including how to request service records from a number of national agencies around the world, as well as graphical aids to assist in deciphering rank, unit, and other forms of badges or insignia. While the users here may still be able to lend you more assistance, hopefully this will provide a good place to start!
Well I can tell you his rank was Feldwebel (~Sergeant First Class) from his uniform but I can't tell you his branch of service from these images. The cavalry did not wear red or burgundy uniforms, they were grey and their collar tabs would have been gold yellow. If he was listed as KIA or MIA you can find out about his service from the Deutsche Dieststelle service. It will cost you ~€30 but that should be it.