. /()-~ 

........... .A.FSA ..-.....- .AD~lIIJISTRA.T:Dffi ....... --..-.. .......... J,mnon.AIIDmt ...-........... --. ....... :ilo.~ _... __ __ Subject: Classi£imxliion oi' Subject Matter Rel.a.ting to Communication 

Intelligence. 

Reference: (a) Secret Letter from CJO, dtd 5 Sa-pt 47, Subject: Classifications 0£ Subject I.latter and 0£ Serv.i.cH l.sctures ... 

Policy Adopted by USOICC as s. Guide Concez'lling 

lo 1n1is r.J.emorandum cancels and supersedes AFSA Adzninisti•ative 

Uooorandtm. N'Oo ll-49, dated 15 September 1949, subject: CJ.aasii'ication 

of Subj eat :latter Used in Administrative Corres!)ondenae. 

2. 'Il.1.e follotdna list 0£ subjects and classifications pertaining to 

the field Of COl!lr.lUlUCG.tion inteJ.lieence has been prepared for the euicJ.o.noe 

of al1 concerned and Tl.ill assist pcrsomoJ. nm"l4" assie;ned to the Amed 

Forces Security ,Aaency in the proper classii'ica.tion 0£ specific cor.mmrl.cation intelligence it3IIS: 

Classification 

Unc1a.ssi£ied 

Restricted 

Confidential. 

Subject Matmr 

rron-spocii'ic or hypothetical. rf'..f ere..."lce to 

cOl::Jlilunication intelliGence vii tl~ou·I; association to the specific activ:i.tios or functions 

of the Arued Forces Seouriizy' Aaencyo 

~e teri:is, tt.Arr.1ed ~"orces Se~.".toc ·oney,ti 

and fl.Arr.Jed Forces Security Counc:Ll~li 

"Without reference to their loco.ti: 1 actfar:i.ties 

or responsibilities. 

Elementary principles 0£ traffic ana.:cysis 

and militar.v c:cyptana.J,ysis o 

Association 0£ ·t.ypes o£ units with call!lltmication intelligence activlticso 

'lhe tettJ.1 "United States Cor.:um.ntl.ca:liions Intel ... ligence Board," Dnd the abbreviation, "USCIB." 

Asoociation or canm.un:ication 1-'l'ltcl.ligence 

£unctions 1;d. th specii'ic acti vi tics and 

oreanizations by nameo 

)-.,..,._ J. -,_ Declassified and approved for release by NSA on 05-27-2014 pursuantto E .0. 1352a 
• REF ID:A54919 • 

..., -8¥.i8RBf' 

Subject: Classi.f'ioation o£ Subject !Ja.tterRelatins to Gomunication 

Intelligence (Cont'd) 

Classification 

Confidential (cont'd) 

Top Secret 

Sul>jcct Matter 

Charts and desor.ip'tiona of the orgmrl.sn"* tion or the Anned Forces Security Agency,, Ar.rr:r Security Agency, Mavy Cor.munication 

station, ~ Force Security Serv.ice and 

other related Q1Je11oies .. 

Individual ixrtercept and D/F' station 

products and operationa:J. ei'i'eotivoness .. 

standing Operating Procedures a.nd. organiza• 

tiona.1 and inst2~tional oanuals govorni1:ig the broad operatine phases 0£ the respective 

oomunication inteJ.liBence organizations o :::> 

<: 

Intercept assignmGntso 

Detailed intercept and D/F p1ans and the:L'r 

overall operational e££cctivonesso 

Reteroncas to Communication IntelJ.igenoe 

derived froc. 10\T-grade military orypt0r• 

~phic systems during Vforld W'e:r II and 

high-grade syste.";lS 'lilhero success.ful. orypta.natysis has been revealed by official 

action (Conaressio11Bl investigations, etcG)o 

Details 0£ traf'i'io ana.lysiso 

Records o.r tho proceedings o:r AFSAC and 

USCIB Comr.rl.ttcea and Sub-ca;Jlllitteas unless 

more 11:1.ehly classiriedo 

The detailed mission of each cor.llllu."lioation 

intelligence organization as a moleo 

Instructions governing detailed processing 

activities and tho hml<Uing and security 

of tho i'ina1 produato 

'.[he existence of' peacetir.le collaboration 

between the Uo So and :Coreign aeoncies in 

the field o:C communication intel.liecmce, '<t.""ot..oe." s::. ... .,... ~'*«/'O'S .._..,\.\,\ooi.'<"'"a.~·,\'!),,._, 
.. "t • 

• REF ID:A54919. 

Subject: Classification of SUbject 1iatter Relating to Oomnunicntio:n 

Intelliflence (Cont'd) 

Classification 

~ Secret (Cont'd} 

Top f:~cret and Secret Tti th 

Coraunioation !ntelli~once 

Code Word Dosi{Inations 

FOR iHE DmEOTOR, AFS.t\: 

DIST.RIBUTIOM I 

§.ubj act ?!!1tt~ 

RG.f'erences to eot'Dunioa.ti<m intell.i8ence 

deJ:'i ved .:Crom and t.tio cryptanalytic succGSaes against lmr-grade r.dlitary cr.yptographic systems used during and be£01oe 

World. War II provided the re>...fercmces do 

not lead to inferences as to t..lte specii'lc 

systems invo1ved. 

The subjact rJattar falling 1dthin these 

cate3ories is defined in CSP J.805 (A)» 

and \Tar DepartD.ent Regulations £or Security 

and Dissemination of' Communication Intel• 

ligence. 

• S. HARPER 

~tain, Uo So I'iavy 

A~ Chief' of Adr.1inistra.tion 

SBeRH'l 

SECAEt