Signal Electrician · Split into 309, 641, effective 1945
Predecessor title from the June 1944 tentative-manual column: Signal Electrician. Suggested conversions/remarks: 309, 641. The table gives no row-level effective date; effectiveTo records the June 1945 manual year.
Sources
- Manual of Military Occupational Specialties, NAVMC 1008-PD, June 1945, Appendix B (Appendix B, printed p. 246 / PDF image p. 252, SSN 648)