Marine Corps · SSN history

556 Airplane Machine Shop Chief

Appendix B identifies SSN 556 as Airplane Machine Shop Chief under AR 615-26 of September 1942 and its supplements, and suggests SSNs 114, 750, 751 or 752 as possible replacements. These were not automatic conversions: each affected Marine’s Qualification Card had to be reviewed against the job specifications to select the appropriate specialty.

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

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

Documented history

Airplane Machine Shop Chief

June 1945 is the manual’s publication date; no effective date or completion deadline is stated for this change.

  • The June 1945 Present Title column is blank, and the entry does not establish a fixed successor or an automatic split into four specialties.
Source extraction notes

Predecessor title from the AR 615-26 column: Airplane Machine Shop Chief. Suggested conversions/remarks: 114, 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.