-_— headings ani procedures adapted to strictly "polut—to-poink* connmications employed by Army activities, rejyuired both experienca and resolution on a commend level before saximun Kavy use of the extensive teletype facilities af the Task Force woe effective. Proml- gebion by CJfF SEVEN cm CTG 7.3 of a stantard routing for teletype traffic, reduction in the use af codress headin-s by JTF SEVEN activ~ ities, and increased familiarity with joint procedures and the oper= eting practices of the Eninstok Helay Center, increased the efficiency of Euvy use of the joint ship-chare teletype note, Ge - The tape scrambling orypto devices (Sigtct and Sanson ayeteons) installed for joint use at Parry, Sninetok, Mrajelein, Alidini, end aboard ESTES arxi BAIROKO, proved to have limited use in TG 7.3 communications, Used succesafully by staffs embarked in ESTES for “point te point” communication, they appreciahly reduced the erypte load at the shipboard terminal. However, seesages originated by shore~based commands, eddressed to task group unite-aflost and enerypted by these devices, placed a recnoryption responsibility on ehipboard relay centers, aid thereby incressed the worklead ant cover~ @ll delivery time. Sigtot equipment wes not ased by C10 7.3 after he moved to USS CURTISS en 6 March. 7 hbheaory requirement was placed on the Navy erypto facil- ities ashore amt afloat, by the differemes in cryptographic allicaances of mits ander CIG 7.3 eperational control, In anticipation of a high percentage of encrypted traffic during CaSTLE, Mavy Clacs IEl AFWU/Ho _= *