Army · SSN history

551 Title not stated in source

Appendix I lists Army SSN 551 as deleted and recommends SSN 970 as a substitute. This establishes a suggested replacement, not an automatic conversion or merger into SSN 970.

Codes named in this history

Codes without a directory match

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

Documented history

Title not stated in source

No effective deletion date is stated for SSN 551. June 30, 1945 is the publication date of Change 2, not an established deletion date.

  • The table does not identify the specialty title or describe its duties.
Source extraction notes

Appendix I lists deleted SSN 551 with suggested substitute 970. 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.