Army · SSN history

540 Title not stated in source

Appendix I lists Army SSN 540 as deleted and names SSN 650 as its suggested substitute. This establishes a deletion with a suggested replacement, not a confirmed merger or automatic conversion to 650.

Codes named in this history

Codes without a directory match

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

Documented history

Title not stated in source

30 June 1945 is the publication date of Change 2, not an effective deletion date. The entry gives no date for the deletion of SSN 540.

  • The table does not state the specialty title for SSN 540 or describe its duties.
Source extraction notes

Appendix I lists deleted SSN 540 with suggested substitute 650. The table does not print the deleted specialty title, so the neutral title placeholder is used. The row-level deletion date is unstated. The citation dates Change 2 to 30 June 1945; that publication date is not an effective deletion date.

Source documents (1)

Reviewed September 23, 2026 against references 1 and 2.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.