Dear Ms. Schiffl-Deile,
Thank you for posting your inquiry on History Hub!
We searched the National Archives Catalog for any records related to Walter Eppenauer and located 1 file unit in the series titled “Copies of Service Records of Selected Mainly Schutzstaffel (SS) Officers” in the National Archives Collection of Foreign Records Seized (Record Group 242). Further, we would suggest reviewing records located on Microfilm Publication A3343 “Records Relating to Membership in the Schutzstaffeln der NSDAP (SS)” as they may contain information of relevance to your research. These microfilmed records can be viewed free of charge in the Microfilm Reading Room (Room 4050) at the National Archives at College Park, MD.
Also, we reviewed a microfilm pamphlet for Microfilm Publication M1019 “Records of the United States Nuernberg War Crimes Trials Interrogations, 1946-1949” in Record Group 238 (National Archives Collection of World War II War Crimes Trials). Walter Eppenauer is mentioned as one of the persons interrogated. A finding aid to this Microfilm Publication may be viewed here.
In addition, we looked through the series titled “European Name Index to the Series “Case Files, 1944-1949” for “Eppenauer, Walter.” We were unable to find any index cards for this individual. Please note that records in this series have been digitized.
Further, we searched the National Archives Catalog for “Dachau” and “Internment Camp.” The search results may be viewed here.
Please contact the reference unit(s) listed in the records descriptions or NARA website for access to the non-digitized records. Please note that due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from various NARA units. We apologize for this inconvenience and appreciate your understanding and patience.
Finally, we searched CREST (Central Intelligence Agency (CIA) Records Search Tool) at https://www.foia.cia.gov/search/ for “Eppenauer.” The search results may be viewed here. Information concerning CREST is provided on the CIA web site at https://www.foia.cia.gov/collection/crest-25-year-program-archive.
We hope this is helpful. Best of luck with your family research!