Military Specialty Undetermined · Converted to 521, effective 1945
Predecessor title from the June 1944 tentative-manual column: Military Specialty Undetermined. Suggested conversions/remarks: *521. 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. 242 / PDF image p. 248, SSN 500)