He looks to be an Pioneer (Engineer) Officer or possibly General Staff Offiz-but I don't think so since the underlay is too dark to be a redish color, and he's of the rank of Major. He also looks to have the Close Conbat Clasp in Bronze, 1939 EK 1st cl and German Cross in Gold. His breast adler is an aluminum pin on version.

Hope this helps?

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Lost are only those, who abandon themselves) Hans-Ulrich Rudel.