Marine Corps · SSN history

140 Oiler, Locomotive

Appendix B lists SSN 140, “Oiler, Locomotive,” as not retained for Marine Corps use, marking it “None,” meaning no such Marine Corps specialty existed. It lists neither a June 1945 title nor a designated successor.

Documented history

Oiler, Locomotive

June 1945 is the manual’s publication date. No effective date is given for removing this classification from Marine Corps use.

  • “Oiler, Locomotive” is the earlier title from the September 1942 AR 615-26 and supplements column, not a June 1945 Marine Corps title.
Source extraction notes

Predecessor title from the AR 615-26 column: Oiler, Locomotive. 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.