Marine Corps · SSN history

925 Mobile Repair Unit Chief

Appendix B identifies SSN 925 as Mobile Repair Unit Chief under AR 615-26 of September 1942 and its supplements, and suggests SSNs 747, 750, 751 or 752 as possible replacements. These were alternatives requiring review of each Marine’s qualifications against the job specifications, not an automatic four-way split.

Codes named in this history

Other history records

These source identifiers have archive pages. Their availability does not establish current service use or retirement.

Codes without a directory match

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

Documented history

Mobile Repair Unit Chief

June 1945 is the manual’s publication date; no effective date for a change to SSN 925 is stated.

  • No June 1945 present title is listed for SSN 925, and no fixed successor is established.
Source extraction notes

Predecessor title from the AR 615-26 column: Mobile Repair Unit Chief. Suggested conversions/remarks: 747, 750, 751, 752. 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.