Cryptologic Technician

26 March 1976 BuPers Notice 1220 announced the change in title for the Communications Technician rating to the below six Cryptologic Technician ratings.  The purpose of this action was to bring the designation of the Communications Technician (CT) into consonance with the Warrant Officer (744X), Restricted Line (161X) and the Limited Duty Officer (644X) Cryptologic communities.

CTT – Technical Branch (SpecSigs, Classic Wizard, OPELINT, TechELINT)

Today’s Cryptologic Technician can trace their roots back to those enterprising Radiomen who taught themselves the Japanese Katakana code in the early to mid-1920s and established the first intercept station at Shanghai, China.

During the summer of 1927, five Marines attended Katakana training in Shanghai China and in September 1927 were transferred to Peiping China where, under the leadership of CRM Dorman A. Chauncey, established the second radio intercept station.