Marine Corps · SSN history

590 Laborer

Appendix B identifies SSN 590 as Laborer under AR 615-26 (September 1942 and supplements) and suggests SSN 521 for reclassification. This was not an automatic conversion: each affected Marine’s Qualification Card had to be reviewed against the manual’s job specifications.

Codes named in this history

Codes without a directory match

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

Documented history

Laborer

June 1945 is the manual’s publication date. No effective date is given for the suggested reclassification.

  • The entry lists no June 1945 title for SSN 590 and does not establish a fixed replacement.
Source extraction notes

Predecessor title from the AR 615-26 column: Laborer. Suggested conversions/remarks, as printed: 521. These are suggested reclassifications subject to individual Qualification Card and job-specification review, not automatic or present-day equivalents. 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.