Title not stated in source · Merged into 657, effective 1945
Appendix I lists deleted SSN 666 with suggested substitute 657. The table does not print the deleted specialty title, so the neutral title placeholder is used. The row-level deletion date is unstated; 1945 records only the year of Change 2 containing this table.
Sources
- TM 12-427, Military Occupational Classification of Enlisted Personnel, 12 July 1944, Change 2, 30 June 1945 (Appendix I, printed p. 148 / PDF p. 216, deleted SSN 666)