Help with Dog Tag

[Civrel]

I am trying to find information on Mr. Westerman.  He was a long time friend of my fathers and he left his dog tags to my father, who was also in WWII.   I believe that the "O" preceding the dash is for officer and officers are not included in the online  ASN search.   Walter served in Europe and I remember him saying that his unit collected old uniforms (American, British, German, Balkans, etc).  I also remember him saying that he was in post war Germany after the war ended.  Can anyone shed help any light in Mr. Westerman's service?

[Edelweisse]

See attached

[Edelweisse]

Grave in Florida 

[Civrel]

Thank you!  I had lost touch with him after my father died in 1991.  He is  buried in the same cemetery as my parents.