Marine Corps · SSN history

378 Motorcyclist

Appendix B identifies SSN 378 as Motorcyclist under AR 615-26 of September 1942 and its supplements, and lists SSN 345 as a suggested conversion. This was not an automatic replacement: each affected Marine’s qualifications had to be reviewed against the job requirements before selecting the appropriate specialty.

Codes named in this history

Codes without a directory match

  • 345 stated by the source. No directory or archive record matches.

Documented history

Motorcyclist

June 1945 is the manual’s publication date, not an effective conversion date; no specific effective date is given for SSN 378.

  • No title is listed for SSN 378 in the June 1944 tentative or June 1945 Present Title columns.
  • The entry does not establish that any individual Marine was converted to SSN 345.
Source extraction notes

Predecessor title from the AR 615-26 column: Motorcyclist. Suggested conversions/remarks: 345. 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.