Marine Corps · SSN history

790 Weather Observer-Teletypewriter Technician

Appendix B lists SSN 790 as Weather Observer-Teletypewriter Technician under AR 615-26, September 1942 and supplements, and suggests SSNs 239 or 784 as alternatives. These were not automatic conversions: each affected Marine’s Qualification Card had to be reviewed against the job specifications before selecting a replacement.

Codes named in this history

Codes without a directory match

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

Documented history

Weather Observer-Teletypewriter Technician

June 1945 is the manual’s publication date. No effective date for a change to SSN 790 is given.

  • The June 1945 Present Title entry is blank, so the earlier title is not confirmed as current in that edition.
  • The suggested alternatives do not establish a fixed split or show which classification an individual Marine received.
Source extraction notes

Predecessor title from the AR 615-26 column: Weather Observer-Teletypewriter Technician. Suggested conversions/remarks: 239, 784. 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.