In case you don’t yet know German Military records can be obtained from the W.A.S.t. at this site;http://www.dd-wast.de/frame_e.htm
There are certain confidentiality restrictions about who can access these and it may take some time to receive a reply - as they say. There is also a charge but worth a try.
If you have any problems with the web site above let me know.
For personal replies, my contact address is:email@example.com