Marine Corps · SSN history

947 Communication Instructor

SSN 947, listed as Communication Instructor in the June 1944 tentative manual, was deleted for Marine Corps use. The instruction “Appropriate SSN” required an individual review of the person’s job and qualifications to select a replacement, not automatic conversion to a fixed successor.

Documented history

Communication Instructor

June 1945 is the manual’s publication date. The table gives no effective date for the deletion.

Source extraction notes

Predecessor title from the June 1944 tentative-manual column: Communication Instructor. Suggested conversions/remarks: Appropriate SSN. Source language is nondeterministic; no single successor is forced. The table gives no row-level effective date. June 1945 is the manual publication date, not an effective conversion date.

Source documents (1)

Reviewed September 24, 2026 against references 3 and 4.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.