I received a response today from the National Archives and Records Administration, National Personnel Records Center regarding the service record of David Lewis Anderson.
(I submitted the request in January). The letter states: "We have been unsuccessful in identifying a military service record for the above-named individual."
I plan to contact them per the letter to confirm the required info from the Jan FOIA request.
This comes as a surprise as I had expected to receive his record including a duty assignment on Guam and his resigning his commission (retirement).
But in my experience, this type of response is indicative of a false claim of military service.