Marine Corps · SSN history

181 Signal Mechanic, Railway

SSN 181, Signal Mechanic, Railway, was deleted for Marine Corps use, with no successor specified. The notation "None" means the specialty did not exist in the Marine Corps.

Documented history

Signal Mechanic, Railway

June 1945 is the manual’s publication date, not an effective deletion date. No deletion date is given for SSN 181.

  • The title appears in the September 1942 AR 615-26 and supplements column; the June 1945 Present Title column is blank.
Source extraction notes

Predecessor title from the AR 615-26 column: Signal Mechanic, Railway. Suggested conversions/remarks: None. 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.