Marine Corps · SSN history

537 Chief Switchboard Operator, Local Battery

Appendix B identifies SSN 537 as “Chief Switchboard Operator, Local Battery” under AR 615-26 of September 1942 and its supplements, and lists SSN 641 as a suggested conversion. Assignment to 641 was not automatic: 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

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

Documented history

Chief Switchboard Operator, Local Battery

June 1945 is the manual’s publication date. The entry gives no effective date for a change to SSN 537.

  • The June 1945 Present Title column is blank; the entry does not establish a specific cancellation, rename, or automatic replacement.
Source extraction notes

Predecessor title from the AR 615-26 column: Chief Switchboard Operator, Local Battery. Suggested conversions/remarks: 641. 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.