USCIB: l.'.3. 7 /.'.3.'.3 

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REF ID : A65 7 5..§.. 

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APPENDED DOCUMFNT CONTAINS 

CODEWORD MATERIAL 

30 August 1954 

MEMORANDUM FOR THE MEMBERS OF USCIB: 

Subject: Delineation of' Categories of COMINT. 

References: (a) USCIB l.'.3.7/30 dated 30 JuJJr 1954 (Item 4 of' 

17th USCIBEC). 

(b) USCIB 13.4/3 dated 24 August 1954. 

1. The enclosed Report of the Chairman of the Intelligence 

Committee is submitted in accordance with reference (a) as the 

unanimous opinion of that Committee. 

2. 1 November 1954 is suggested as the date upon which the 

enclosed recommendations could conveniently be made effective. In this 

connection attention is invited to reference (b). It should also be 

noted that introduction of categories means full implementation of the 

new Appendix 11B11 and a new connotation for codewords which fonnerly 

indicated the nature of the substance of' the material to which they 

referred (i.e. whether Special or Traffic Intelligence) but will now 

indicate only the category of' the material to which 'they ref er. 

3. It is requested that the attached vote sheet be executed and 

returned to this office by the close of business on Tuesday, 7 September 

1954. 

Enclosure 

INT #0005 dtd 27 Aug 1954. 

USCIB: lJ, 7/J'J 

aptain, U. S. Navy 

utive Secretary, USCIB 

APPENDED DOCUMENT CONTAINS 

CODEWORD MATERIAL 
INT # 0005 

27 August 19 54 

MEMORANDtlt FOR THE EXECUTIVE SECRETARY, USCIB: 

Subject: Categories of C(J[INT. 

Reference: USCIB 5/460 dated 30 July 1953. 

1. Pursuant to the reference and the decision reached at the 

Seventeenth Meeting of USCIBEC on 30 July 1954, the Intelligence 

Committee worked out an agreed upon view as to the assignment of 

cryptosystems and classes of C(J[INT to categories in consonance with 

criteria provided in paragraphs 9 and 10 of' Appendix 11B11 , Revised, 

and further delineated in Annexure m. 

- 2. Attention is invited to the proposed. division of Category I 

into "suitable" and 11 assigned11 sections. Although such a division is 

not specifically discussed in Revised Appendix 11B11 , the Committee 

feels that the designation of a 11suitable11 section falls within the 

intent of Appendix 11B11 • While GCHQ proposed. a slightly different 

method for handling Category I assignments, it is felt by the 

Committee that the U.S. method would have the advantage of providing 

a more flexible and rapid means of effecting assignments. 

,3. Accordingly, the Intelligence Committee recommends that: 

a. The enclosure be approved. 

b. The Director, NSA be designated the USCIB agent responsible for accomplishing the following with respect to categorization 

of COMINT: 

EO 3. 3 I h I I 2 I 

(1) In close consultation with the member departments 

and agencies of USCIB, to prepare and maintain 

lists of material adjudged suitable by the U.S. 

for future assignment to Category II or Category I. 

PL 86-36/50 USC 3605 { 2) With the concurrence of the member departments and 

agencies of USCIB, to prepare lists of COMINT to 

be assign~ci ~~ the several categories and such 

sub-categories as maybe established. 

(3) negotiate with the Directo~, Gci!Q I .... _____ .... o ca egorization matters requiring US/UK 

------agreement. 

TOPSECRWF 

ATTACHED DOCUMENTS CONTAIN 

COD:EWORD MAT:sRI,Al, 
Tlh~kc1~rA 5: ~ 11 

I

-=-- .A'l'TAC~ ;QQQUl~S 60N'HIN 

COQEWORB MA'fERIAL 

INT # 0005 

'!OP SJ!iam!1!!' 27 August 1954 

Subject: Categories or CcMINT~ 

~ - - - - - - - -- - - -- - - - - - --- -- - - - - - - -- --- -

EO 3. 3 I h I I 2 I 

PL 86-36/50 USC 3605 

Enclosure 

(4) To maintain in current status lists of COMINT 

assigned.ubyu1:,h.E!utJ.S.u,utheuU.K.I I to the 

various categories. 

c 5) r~ ~C>l11Ill'lll"Jicate t.c> t.he n:i..rector; acHd ____ ___. I tthe assignments to the various categories as authorized by the U.S. 

(6) To keep USCIB informed through the Executive 

Secretary or actions taken in the preparation of 

lists or "suitable" and 11assigned11 materials. 

AJleA--~ ~: C. SIMMONS 

Lt. Colonel, USAF 

Chairman, INTCCM 

Categories of CCMINT 

dtd 27 August 1954. 

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ATTACHED DOCUMENTS CONTAIN 

CODEWORD MATERIAL 

·, 
27 August 1954 

CATJ!OORIFS OF CCMINT 

I. CATIDORY I 

A. Assigned -

1. 

2. 

B. Suitable for Assignment to Category I -

other intelligence as set forth in paragraph 2,, Annexure.Bl,, Revised 

Appendix "B 11. * 

II. CATEGORY II 

A. Assigned -

EO 3.3(h)(2) 

Pl86-36i50 USC 3605 

l. All I · I exc~t that 

specil'iCilli assigned to Categories I or III herein. 

2. ....I __,,------.......--.-..........,..-----------------'l1isted in the attached Aririe.x I. 

* To avoid the necessity of' extending further the distribution of' 

the UKUSA Agreement,, the member departments and agencies of' USCIB 

will,, where necessary,, write into their implementing instructions 

these pertinent portions of ReVised Appendix nB". 

:Enclosure with INT II 0005 dtd 27 August 1954. 

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• 

B. Suitable for assigmnent to Category II -

l_.,.......-___,...,___,,,,.......,,...........--____,,,=---------l 1isted in the attached Annex II. 

III. CATEDORY III 

A. All other than 

from those assigned to Category II or Category I. 

B. based in whole or in part on the analysis 

or use or identifications and other data derived from Category 

III COKINT. 

C. COM.INT based on traffic obtained from sources classified TOP 

SECREr. 

D. I ._an_d..,,......,i,...s-o"""r_s_u_c"""'h.....,...h ..... igh....,........,i,...n"""'t-e'="l! ... 1.- 1 g_en_c_e,....\.-v<_il ___ u_e-or_s_en-s"'""i.,..ti ..... vi""""'""'t_:v_a-s""""t,...o-. ___ ............ 

require assignment to this category. I /lo£ 

this sort shall be assigned to the sub-category ~g~t I ..._,, _____ ...,..... _ __.whi<lll is established unde~,..,subparagraphs 

E2b and E2c below. . ...... ..... 

E. Sub-categories 0£ Category IIJ:- jEo>3.3(h)(2) 

Pl 86~36/50 USC 3605 

l. 

2. End product based on l .... _______ ___,Jas follows.: 

a. All messages passed on circuits controlled bv the/ \ 

\ -

b. All messages of thel I 

\ . 

c. All messages regardless of/ 

I 

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TOP SEC&r~ si 

• \;O 3.3(h)(2) 

ANNEX I PL 86-36/50 USC 3605 

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.. • ~ REF ID:A6571'- e OP 8ECflE'T FR01n ~p SB9R:E'i' r:RQ.'11! EO 3 . 3 ( h) ( 2 ) 

ANNEX II FL 86-36/50 USC 3605 

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. . . . 

TOP SEeHSf llg?II EO 3 . 3 ( h) ( 2 ) 

PL 86-36/50 USC 3605 

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