Marine Corps · SSN history

673 Medical NCO

SSN 673 identified Medical NCO in AR 615-26 (September 1942 and supplements). The June 1945 Marine Corps manual lists it as “None,” indicating deletion for Marine Corps use with no designated successor, not conversion to SSN 667.

Documented history

Medical NCO

No calendar effective date is given for this deletion. June 1945 is the manual’s publication date, not an established conversion or cancellation date.

  • “None” means no Marine Corps specialty; it does not establish that the Army occupation was abolished.
Source extraction notes

Predecessor title from the AR 615-26 column: Medical NCO. Suggested conversions/remarks, as printed: None. None means no Marine Corps specialty is identified for this earlier meaning; it does not establish that the Army occupation was abolished. The table gives no row-level calendar effective date. June 1945 is the manual publication date, not an inferred individual 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.