Dear Mr. Beringer,
Thank you for posting your inquiry on History Hub!
Since it appears you are interested in the Foreign Military Studies Program, we searched the National Archives Catalog for any records relating to the Foreign Military Studies Program of the Historical Division, United States Army, Europe, and of predecessor commands since 1945. The Program employed former high-ranking officers of the German Armed Forces to produce studies on the German World War II military effort. The search produced the following results. Within these records, we suggest checking some of the indexes to the studies as they usually include the names of the authors.
Also, we suggest reviewing records microfilmed as the National Archives Microfilm Publication M1035 titled “Guide to Foreign Military Studies” as they may contain information of interest to you. This Microfilm Publication may be viewed free of charge in the Microfilm Reading Room at the National Archives at College Park, MD. Prior to your visit, please consult College Park websites at https://www.archives.gov/dc-metro/college-park/, https://www.archives.gov/dc-metro/self-service-copying.html, and https://www.archives.gov/research/start/getting-started.pdf.
We hope this information is helpful. Best of luck with your research!