Specialists (X) (RL) Research Laboratory · Renamed to ESX, effective 1948
Malin/BUPERS source assertion: changed to Specialist (ESX) 1948. Normalized as renamed/changed.
Sources
- Charles A. Malin/Bureau of Naval Personnel, Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969 (rev. Dec. 1969) (#anchors, Specialists (X) (RL) Research Laboratory entry; reproduced on archived Ohio PDF p. 17)
- Charles A. Malin/Bureau of Naval Personnel, Abbreviations Used for Navy Enlisted Ratings (1970) (alphabetic abbreviation list, Sp(X)(RL), ESX entries)