Dear Mr. de Vanssay,
Thank you for posting your request on History Hub!
There is a good chance that Raymond de Vanssay may have a Military Personnel File located at the National Personnel Records Center in St. Louis. You can request a search online at: https://www.archives.gov/veterans/military-service-records. You also can email the National Archives in College Park on unit records of the 79th Cavalry Reconnaissance Unit. Raymond de Vanssay may show up in the unit records. The National Archives in College Park email is: email@example.com.
We hope this is helpful. Best of luck with your research!
Thank you very much for your response.
I will contact the suggested institutions, in hope of finding at least something related to my research.
Again, thank you very much.
Omar de Vanssay