Chemical Engineer
June 1945 is the manual’s publication date. No effective date is given for a change from SSN 293 to SSN 411.
- The June 1945 Present Title column is blank; the entry does not establish that Chemical Engineer remained a current Marine Corps specialty.
- The suggested conversion does not establish that any individual Marine was assigned SSN 411.
Source extraction notes
Predecessor title from the AR 615-26 column: Chemical Engineer. Suggested conversions/remarks: 411. 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.
- Manual of Military Occupational Specialties, NAVMC 1008-PD, June 1945, Appendix B
1. Appendix B, printed p. 239 / PDF image p. 245, SSN 293
PDF page 245 (opens in a new tab)2.Manual of Military Occupational Specialties, NAVMC 1008-PD, June 1945, Appendix B · event transcription · docs/legacy-data/usmc-wartime-ssn.jsonl:114; Appendix B, printed p. 239 / PDF image p. 245, SSN 293
PDF page 245 (opens in a new tab)3.NAVMC 1008-PD: Appendix B primary row 293 · Printed p. 239 / PDF p. 245, SSN 293; five-column primary image transcription · cited by the explanation
PDF page 245 (opens in a new tab)4.NAVMC 1008-PD: governing rules for deleted and changed SSNs · Chapter I section 13(2), printed p. 9 / PDF p. 15, and Appendix B heading, printed p. 236 / PDF p. 242 · cited by the explanation
PDF page 15 (opens in a new tab)PDF page 242 (opens in a new tab)