Army · SSN history

691 Flexible Gunnery Trainer Operator-Mechanic

SSN 691, Flexible Gunnery Trainer Operator-Mechanic, was directed to change to either SSN 969, Synthetic Trainer Mechanic (Designated Type), or SSN 970, Synthetic Trainer Operator-Instructor (Designated Type), whichever was appropriate. Appendix I later listed 691 as deleted, with 969 and 970 as suggested substitutes.

Codes named in this history

Codes without a directory match

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

Documented history

Flexible Gunnery Trainer Operator-Mechanic

Operated and maintained synthetic gunnery trainers using film projectors, sound equipment, and coordinated machinery for firing guns at projected targets.

The change instruction appears in Change 1, dated 12 April 1945, and the deleted-code listing appears in Change 2, dated 30 June 1945. Neither passage states an effective deletion date, so those publication dates do not establish when SSN 691 ceased to apply.

  • The instruction does not specify how to decide which successor specialty was appropriate.
Source extraction notes

Appendix I lists deleted SSN 691 with suggested substitutes 969, 970. Appendix I does not print titles. The title is documented elsewhere in TM 12-427: Change 1, 12 April 1945, PDF page 5; instruction for printed page 88. 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, 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.