Amphibian Tractor Crew Chief · Split into 994, 997, effective 1945
Predecessor title from the AR 615-26 column: Amphibian Tractor Crew Chief. Suggested conversions/remarks: 994, 997. 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. 253 / PDF image p. 259, SSN 9950)