, • smfi\!ID: A71840 -~--- ... -

12 Septemb•r 1944 

Cc;,.mmenh on attao,..ed tentaU•• draft of la"Q' tnet:rucUons for 

M.l~\•l~ln4 ~he lecurlt1 of Co1111Unlcation Intelligenoe, d.at4'd. 

n J\UI.• 1944 

1. 1\ la Qoted thftt the 1n•\ruct1on• &'P'fll1 to ~11 oomf!!lulieAtion 

latelUpnce and •l"• aoi contlned, •• ln the QSlll of th~ Am.r Ultra 

rt"1l,&tlon•, to 1nt8ll1~nee d.,-1¥e4 fro• orypt4nalT•i• ot hlgh 

cta.4• cod•• Gd clpb~r,. U l• -. .. uiil!'d \ht+\ th• Ie't)'" 4o.-a n )\ 

eon*1du it uaceHUT \o alee t.he 4ht1nction wiC'n thf!ll _,rav aakea 

\etvtf':l. btgh l~Tel an4 ot.h~r al«D~l 1ntelllcenee. 

a. 'fh.e lll•\ruction• u1• \he ~ord •UJ.tran •• th• cod& word 

for &11 11gn.al intelll1enoe, wher~a1 the ArS¥ ueen 1t only for 

11111•1 int@lllfence der1Ted from bl~ «r•d• aod•~ •nd c1Jlher1. 

Ille dtft•rence m&7 l!Nl-d to •om• contusion vh•n •lgnsl lnt•lll- ctaC~ 11 •x~ed b•t~een the Ser~lcet. 

!. fhe izl9tructic;m1 do DO\ proYld- fOT •}'ecfnl ehJlnn•ll, 

clphera and per•onnel for the \rAn•ehelon and hftndllne of tl ix-a 

ae 4o \h• ArtaT r~culation•. 

4. ~. r•alplent• authorl1ed ln 'J)ftrogreph 4 of the ln· •tru~Uon• lllolud• n•e\ and 11aJor '!aek: J'oroe Co1Ulr..nder1 1 tl,elr 

Cbl•!• of S'ett, ~••1•~a:nt Chl•f• of ltatf for Ple.J.1•, 0p•rn11ons, 

and !n\•lli&fllla•. and \h•lr COZ111U.nlc•tion• Offlc•r~. Th• Aliff 

rt!f:U.1at1ona p~rat\ Ultra. to\• elven to ao~pn.rable officer~ and 

-.l•o to a4d.1t1on&l IntelUcmce and OparQ.tlon1 Staff Offics1•1 

u 1pecttle..ll7 author1ud in each. ln1te.noe bl' \he Wnr De&1,·humt. 

luab a pr-o•1•1on 11 cone1d•red e114mtial to permit Ultra to be 

Umtlec! •fflc1e:ntl7 nt rec•lT1.n4t .:iudqu1tr\8r1. U is undeJ' J\ood 

theat \he la'Y7 4oes pttrait ad41tlonal officer• to b...ndl• Ult·a 

wtlen neoeelai"¥ (e.g., JX~J~A, ?th J'l.eat). 

I. !he loved echelon aut.horbed br \he 1•'97 r•galitU )!la t.o 

r•o•1Y1 undisc;ul••d Ultra la •aaaJor Ta1k 'force.• ":ha A.ray regulaUon1 psrm1 t Ul.trn \o be a{TAtl. 'o bN.dquutns do\1n to an.1 

ln~ludi~ Ara,t Group• or equi~lent Air 'ore• torvRtton•, and 

a.ho in u:eeptlonal. cirCU11.tancea vi th aut•,ori tr of tl.• !'he&ter 

Coamllnd•r to Oorpa or Dl•l•ion er equ1Tal.nt Air Yore• formstlona 

it aperat1n~ ind•p~ndently and if p.~alc~l 1ecur1t7 la •••~red. 

lueh a prov1elon i• con1ldere4 nPc•••~17 to provlde 'f'l•x.1b1l1t,'. 

Peclassified and approved for release by NSA on 09-19-2013 pursuant to E.O. 1352§ 

f()j;l SOOH£r '- - - - -
-

7 

I 

REF ID:A71840 

I. Jtu-craph 4 of U:.t in1iruat.1on• pl"OYld.e thn t when 

oomrnui1c~tlon ln\•lll~no• 1• pa••~ to •ubord1nfttsa. It ahall 

)• J*Ued "'U.boll.t r•t•r•no• to th aouro• and the &t1Ha£• 11Y1l 

eontaln lhe ~ord •Ultra.• It l• not 11Ad•r•tood vho are tneluded. 

la the ~ord ~.ubor41ne\e•- or wnr \he a~llllcetlon of paracrain 4 

1t limited \o ........ , to 1n1bordlna.te1. 

f. h.r.acr•pb 4 p•r•U• 41.agnhed Ul ira to be -paued. on lb.en 

1•ec•••ar,.• Th•re l• no ree\~le\ion ••to \rho• tt.., be JJ&•••d 

••· Tb.• ooa-parabl• proThlol'A of the ArlS;Y Ttlfg'lllaUon• pen1 t.• enl.7 

optraUonal ordtr• baaed. cm tJltra \o be p&Hed. on. to reelpic ~· 

1A ad.di,lon to \boa• aut.nor11•d 'o recelY• tnt.~a. 

I. l'arttcraph IS •m1:ih•d••• th• 11eo1Hit.f fol" oan'Uan on. 1.he 

pa.tt. ot •lew•r echelon• • ln takln1 aeUcm on. Ul \ra vhlah lllff]1\ 

41aclo1• $ht •ou~ce. !h1t ••es• to l11Pl1 tha\, cont~ar1 \o 

p&r&q•ph 4, •c»Jelont lover than •ho•• lhhd ln pul'lgraph 4 '1111 

f'tceh·• Ultre iAtelllc•noe -= will ll:nov tbllt h 1t Ul\ra. 

'· l' 11 :no\-4 that ••ch r•o•lTlft« he-a.d.qttartlll"fl. appoint& tta 

own officer t.o control 41Hemln~Ucm and •ftCur1t1 of Ul t.ra 1 aud. 

\ta.t •<» c.ii\rft.lbl!d oo.ntrol of •uoll oft1cAra 1• aont1111t1·ht-4, •• 

1n \h• oaae of ~he ~·· •1peolal S.aurlt¥ Oftlcert.• 

10. !b• lndruoUon• provide that all ••H•ge1 c-ontalntng t7l\ra 

lntor111&tlo~ •be.ll bt ola•alfled. •• fo» Seen-a\. Arm;r T•4\1latio~1 

for tl'l\ra 4o no\ -i>ecif) what cl•aaif'lee.tlon 9.ball Ol!' u1ed. f:)p 

l•oret 1• ueed., but lt 1• t•l' \he.\ the 1sport&.:1i protection or 

trli:ra h lh t~clal bandlln« ratl•er \h&n Ut ol•H!.flcaUcm. 

11. fhe T .. •on. for l2:1oludlnr the \lord •ordlnaril.t• 1Jl the 

laa\ ••:a\enae of th• batru.cUont h not olear. 

la. fht ln1truot1ona conla1n no prov11ion1 tor briefing 

rnlplt11th, •.t,niac ott• rea1-p1en.h and k••Pin« lhh ot reclpi-

•h. auc:-i •• a.r• ®:atalned 1n ptr•cr•pb• 8 a, 8 e and 8 • of the 

A.J'll¥ r•gulat1on•. 

l~. th• lll•tru0Uon1 contain no pl'o'Yhion1 o011pai·ebl• to the 

Jt!'O'f"h~QIUI of' J?N"•craph 10 ot t.he Arat¥ r•cula.Uone, co11aer11ln,; 

~ 1.uf'oraaUon f'ro• Ultf'a •ourc•• 1NlT b• included ln non-tnt.re. 

ttpor\1 or •1tt11atee. 
---......... ~------ - . -- . - ~~--~~~ 

TO 

REE" ID:A71840 

• AHLINGT'JH f&~RiJJDate ~~ 'f~ 

FROM 

~ .. _,,,.nding Officer~::;: : 

Asst. Commandant ~-L_ ---.Dir. of Com. Research A~~inistrative Office_r _________ __ 

~~~-Asst. Administrative Officer 

Adjutant --- ----Asst. Adjutant ~----------------------- ---Chief', Ad.'llin. ""'B,_r_an_c"'"h _______ _ 

Info. & Liaison Branch ------Chief, A Branch ------------ ------Chief'. B Branch -------------~ 

---Chief, C Branch--

Chief, D Branch -------------- ---Chief, E Branch----------------

Ch ie f, F Branch 

,------Chief, G Branch-----------------

2d Sig. Serv. Bn. ------Director of Training ...,....-------------- -----Property Officer -------------- ----- ,.......-------~----~ Intelli&ence Officer ~~--Personuel Officer -------------

Provost Marshal 

------. Post Dispensary ----------- ------. Post Engineer ----------------- -----.Post ~fail Roo_m _____________ __ 

~ecretary to c.o. ------General Files ...,.... ___________ __ 

--201 Files 

--------------------

Comments and Return 

-----Reco.:n..nendations -------------

Signature, if approved ------.As Requested ----------- ------As Discussed-----------------------

-~action 

~nforma.ti~n--a-n~d,.....,,R~e~t-u_r_n __________ ___ 

Information and Fonirarding ------ --~---- Information and File 

------See Note on Back ----~--------

...,.. __ .,._, -""""l!ij~ ....... .....,{ .... ~.,,, " 
REF ID:A71840 

!OP SEORB! :CUfTATIYE DRAFT 23 June 1944 

Op-20-G/lmd G- -I No. I 1 

TOP S£C:§fi.TucTroNs ,FOR 11.AINTAINI.NG TiiE SECURITY oF 

QQMMIJNICATION INTELLIGENCE 

1. Definitions Communication Intelligence embraces all 

intelligence derived froc enemy communications and consists 

o:r (a) qpecial rntelligence which is that intelligence obtained 

by decrypting enemy coded or ciphered messages, and (b) .rraf.fic 

,Analysis ;Intelligence (Y inferences) ~hich is that intelligence 

derived :rrom enemy communications by all means short o:r •1ecryption. 

a. Jal.ueJ The extreme importance and value o:r Coi:mrunication Intelligence cannot be over-emphasized. It has beml the 

principal source of authentic in:t"ormation regarding the •memy• s 

future actions and intentions. For this reason it is im1ierative 

that the source of this intalligence be protected in ordE!r to 

permit a continuing flow or in.formation. Physical securlty of 

this type of intelligence is not sufficient. All referer.ces 

to its existence, however guarded, must be avoi~ed except to 

those who actually require it in the execution of their tasks. 

Communication Intelligence must not be divulged to any individual 

merely because of his rank. The Commander in Chief, United 

States F~eet and Chief of Naval Operations therefore directs 

that the following paragraphs be scrupulously complied with 

and that, in particular, every effort be made to reduce tJ the 

l -

Enclosure (B) to Cominch Serial 

i ..... _. 

' I 

1-... 

\ 

• 

r 

t 

... 

\; 
.. 

REF ID:A71840 

TOP SECRET 

absolute minimum the number of persons who have the knoRledge 

of such intelligence. 

3, Code Wordst Whenever it becomes necessary to pass 

Communication Intelligence to subordinates, it shall be passed 

without rererence to its source, and the message shall contain ~ 

the word rtsUPER" eP tfte wel'd "ULTRA". 

4. A:utAqrized necipientss .All traffic bearing the f'orer going code words shall be routed to and be seen by only those 

or the following who must have the information in ordeJ• to carry 

out their duties, viz,, fF1eet and major Task Force Comna.nders., 

j;b.eir Chiefs ot Sta~f, Assistant Qhiefs of Staff for r;..ans, 

Operations, and Intelligence, and their Cominun:J.cation Officers. I -~ 

When it becomes necessary to pass on ns~FER• or "ULTRA' information, it shall be passed on in the f'orm of.' an operati·)nal 

directive, avoiding a11 mention of' the source and furt·1er safe1uarding the source by caretu.l paraphrasing or elimination of 

specific dates, times, numbers, and so forth. Under no circumstances shall an authorized recipient discuss items of Communication Intelligence with any person unless he is assured that 

that person is authorizec to receive such intelligence. Communication and intelligence personnel handling or seeing this 

type of traffic must be carefully sele~ted 1 ~ept to a minimum, 

en<! turnover of personnel avoided in so far ae possible • 

.... 2 -
............. ------------~- REF ID:A71840 

TENTATIVE DIW'T TOP SECRET 

5. Opetational !IJ.form,atian1 Communication Intelligence 

contains items of operational value. While it is true that, 

to be of value.., positive or operational use must 'be made :>f 

such intelligence, it should be borne in mind that the risk 

of compromising the source is always present and the actl·::>n 

officer must weigh this disadvantage against the tactical 

advantage which may be only local or only temporary. Thi.i 

applies particularly to lower ech;eJ.ons where the location!I are 

exposed to enemy actions or where the provisions for secu1•ity 

are less than acceptable. In practically all cases,, a si1nple 

directive to take a spec1t1c action,, addressed to the unit or I ' 

units concernedi will sutfice, rendering unn~cessary the transmitting of the source of the information or the in~ormation 

itself on ~hich the directive is based. Special precautions 

to ~reyen,t the disclo~ure of accuratg knowledge based on "OLTRA" 

information concerning enemv intentions 1 or the location, uove-

.ment or composition of enemv unit~ shall be taken in briefing, 

Rilo'ts becaus§ of the danger of their capture by the enemy, 

6. Dissem1nation1 In order to provide for proper d.lssemination of Communication Intelligence and at the same t:.me 

insure adequate sa.feguards for its security,, those commandn 

receiving nuLTRA" information shall designate an orficer YllLO 

is thoroughly conversant with Communication Intelligence mE.tters 

to control the dissemination and physical security or all 

"ULTRA" received. In all cases where it becomes necessary to 

- .3 - ( 
.. ,·4 .. - ~ .-..... 

REF ID:A71840 

T;&NTATIVE :QRAFT TOP SE<:RET 

disseminate ftULTRJ." information to subordinate comm.ands by 

cryptographic systems other than those specified in paragrE.ph 

7 below, such dissemination shall be made by this officer, or 

passed by him as may be directed by the P'l.eet Commander concerned,. 

~. Cr.xRtographic Systemsa Whenever Communication Intelligence is transmitted, only cryptographic systems of the highest security (i,.e., ECK, CCM1 ?-'YPEX, or one-time cipherf and 

narrowest distribution shall be utilized. When, in exceptiJnal 

cases, this is impossible, information shall be passed by utilising the cryptographic system o-r the highest security available 1 

including in.these messages only the barest essentials requ'lred 

tor necessary action by the addressee. 

8. Refereaces1 No re.ference to Communication Intell:.gence 

shal.l be made in War Diaries,, Action Reports, or other repo3•ts 

or proceedings without prior speciric authority o.f the CommEnder 

1n Chier, United States :rleet and Chief of Naval Operations, 

Whenever action is taken, based on Comnmnication Intelligence, 

' 

studied effort must be made to insure that such action cannct 

be traced or attributed to this type of intelligence alone. l 

.. Whenever possible,, action against speciric targets revealed by ~ 

nuLTRA.• shall be preceded by appropriate air or land reconnaissance or other suitable camouflage measures- In general, 

momentary tactical advantage is not sufficient ground for ta!d.ng 

any risk of compromising the source • .. 

.. 4 -

<,., 

- -------·---~----------------............. -._ .. -- --m:!"':r.:---:. --~r== 
: 

. 

REF ID:A71840 

r ------- -------- - --------

f I 

%OP BECftE! TOP SECRET 

- 9. Classificati2ns1 All copies of messages, transJ.ations, or other documents containing "ULTRA" in.formation rshall 

be classi.fied as TOP SECRET. Copies shall be kept at a m:~nimum and shall be destroyed immediately after use is made of the I 

in.for~tion. Complete f'iles o:f •ULTRA" dispatches shall be 

maintained only by Commanders in Chief' and main Communica·;;ion 

Ihtelligenee centers. Particular care shall be exercised to 

1nsu1·e that files ot •ULTRA" information are not maintain·~d 

1n locations exposed to view Dy, or accessible to, person:s 

not ordinarily authorized to see such in.formation~ 

... s -

...___ ___ _