German Luftwaffe fighter ace and recipient of the Knight's Cross of the Iron Cross with Oak Leaves during World War II. He was credited with 152 victories, making him the 34th highest-scoring Luftwaffe fighter pilot of World War II. He was "ace-in-a-day" twice, shooting down five aircraft on a single day. He claimed all but one of his victories over the Eastern Front. He was reported missing in action in March 1943.