Marine Corps · SSN history

228 Instrument Man, Surveying

Appendix B identifies SSN 228 as “Instrument Man, Surveying” under AR 615-26 of September 1942 and its supplements, with SSNs 227 and 230 suggested as conversion options. Selecting a replacement required reviewing the individual’s Qualification Card against the manual’s job specifications, not automatically converting everyone to either code.

Codes named in this history

Codes without a directory match

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

Documented history

Instrument Man, Surveying

June 1945 is the manual’s publication date. The entry gives no effective date for a conversion or an end date for SSN 228.

  • The June 1945 Present Title column is blank; the suggested alternatives do not establish a fixed successor or an automatic split.
Source extraction notes

Predecessor title from the AR 615-26 column: Instrument Man, Surveying. Suggested conversions/remarks: 227, 230. 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.