Marine Corps · SSN history

909 Mechanic, Engine, Track Vehicle (Gasoline)

Appendix B lists SSN 909 as “Mechanic, Engine, Track Vehicle (Gasoline)” under AR 615-26, September 1942 and supplements, and suggests SSNs 660 or 996 as possible replacements. These were not automatic conversions: each affected Marine’s Qualification Card had to be reviewed against the job specifications before selecting a suitable specialty.

Codes named in this history

Codes without a directory match

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

Documented history

Mechanic, Engine, Track Vehicle (Gasoline)

June 1945 is the manual’s publication date. No effective date or completion deadline is given for the suggested conversions.

  • No June 1945 Present Title is listed for SSN 909; the entry does not establish a fixed split into both suggested specialties.
Source extraction notes

Predecessor title from the AR 615-26 column: Mechanic, Engine, Track Vehicle (Gasoline). Suggested conversions/remarks: 660, 996. 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.