----------~~--~-... - - - --- -

eclassifie9. and ap~d ffir.r~~?3:2PJSA on 04-09. 526. .t ;.&; ......... 

/1.PJ,,I?!GTO?T HALL STATIO?l 

D~~ k~ ~------~" 

TO 

Commanding Officer -- ---------- __faS st. CoI!II!landant ~Dir. of Com. Res_e_ar--.cl,_1 _____ _ 

Executive Officer 

--Asst. Mxecutive o"""rf'.,..i. ' c_e_r ____ _ 

.hdjutant 

----asst. A.djut..'l.Ilt -------------------~ 

---Chi ---.......,,....---...----- e i', Headquarters Branch 

---Coordination Section ----

Inf. and Liaison Section -- -------- Chi e i', A Branch 

----Chi e i', B Branch ------------- ----Chi e i', C Branch --------------- --

__ Chief'~ D Branch ------------_______ - __ _ __ Chief, E Branch _____________ _ 

Chief', F Branch -Dir. of Trainin_g _________ _ 

2d Sig. Serv. Bn•. ---,-Property Officer ------------- ----P,ersonnel Oi'fice_r _________ _ 

Provost Ha.rshal 

----Post Engineer ----------------- --Classified Ua..,..il,,_...,I.,,.ro-o-m--------

Secretary to c. o. 

---General FiletJ ---------

201 Files ---- --------------- COiiU'l'l.ents and Return 

-----Recommendations -------

Information ---Infoma tion--a.n-d~Re,......,..t_:ur_n ______ _ 

Inf. and lt'or1varding --Your Information aii . ....,,d_Fi~ ..... 1,_e _____ _ 

----Signature, if approved 

See Ifote on Ba.ck -------

--As Requested ---.b.s Discusz:Jed·-------------, -. -.-. 

J°OUJ' Action --- --..------------
r:. • I 

·.• REF li\MtMtiJP 7 

\\iUl!::iVUUU:a I •W 

ART..INGTO!•T P..A.r..r. STAT!~ 

Date· 'l.o \AtJ '\-,3 - I 

TO/ • FROH 

_L Gorar.mnding Off.:;cor 

Asst. Comm:u1d.ant -----z·-.. -- ---Dir. of Caa. ~research iZ. 

Ex"ecutive Officer --...----

--.'~sat. E:recutive "Officer 

-i\.djutant ------

A.:is'I:,. Adjutant --Coordination S'-e-ct ... i"'""· o_n ______ _ 

__ Chief; Headquarters Branch __ --"-" .... ·--

Chief'; A .Branch 

-.Chief, B Branch---------

Chief; C Bi•tmch --Chief:, D Bronch --------- --Chief; E Bre.nch --------- ------Chi e .f', F 3rnnch --------- ----Dir. of Training --------------- --c. o. of Troops ·--------- ------Property Off ice_r ______________ _ 

"Per3 on.'1.el ... or fie er 

---Provost !·.~rshal -...-------

Classified }~il fioar.1 

--secretarJ to c. o. ------- Gcnc1·ai J'iles 

--201 li'iloa· ----------

Cornme~1ts a:.id. ~tu1•::1 

--,'!ac0T.1me!1da:tions ------- -·--Lrll'or.:nB.tiori -.....;;.-------.;;..-

Inforr.iation b:"ld Return 

--Inf. and: Forwnrding ------

----Your Information and.li'ite 

Si:-r.ature, if appl'oved -~---

-----8 e e i!ote on Back ... ---------- ,....---}. B ~?.equested --------------- ---As Disc-i-1ased ....... ..-------..-....---

----Your Action· ______ _... __ __,....___._... __ __ 
I ' 

, . , 

... ~-:. -·-.. . . . ,. 

. . .. 
• 

., 

SUBJECT 

Number 

each 

ac:tlon 

·· .---- · REF : 67327 

-. ...a. ... TING i -- -------Sa.ET . _·· _:- - ~!WU . __ l\..~U W.~~"' ---·~ _.,.. __ ,. .... :..::.·~---:-.:./-:.J;BellB'P • • '. - - - • - • . ·-~-. ~- . .l ... ~---. ------- - - -- .- ., .......,., "'... ·-

(PAR. 40.62 ~-R~ , ______ . ___ .- _ ·-:;..@l!W.fllllll!' ~_:__ ___ _ .:. . . . ~ ~- . ·. . . ~ _· :;: : -~: :.:-:--. ·_· _. --~-~-~ tl/!lt::- ·4~td 

~~quested copy of Letter ~ - ..... ·.. ---- - -~~~~--

. • ---~-- --~.'.:~~;_:~-- ~-~,.~ -~::; .. ,,~~:~~-~;:;.- ;_j,~~~-- '~~4~~1ii 

To-

- . ·"' - ,/' - -.l"' . ' ~- -':' - •.• ... ... - =-!"::a. 

Meinorandum Name, Dlvlalon or 

Branch; a:i:id Date 

l Mr. l!"riecUna.n Attached hereto is a copy of the letter 

which is· substantially the same as the one used 

by Col. Wozencrart to introduce Army supervisioJ 

into the several governmental agencies. No 

copies of· this letter were left with any of the 

government agencies. The uiatter was handled 

entirely on a informal basis. No copies of the 

original letter are on file in this office. 

\ l Incl. 

Incl. 1. cpy of ltr to Hon. Cordell Hull. 

.. - .. ":-.!.F . 

Char~s~r . fMa.Jor, SPSIO ·· · - 119 Nov 43, Ext. 244 

......... -· .... ., 

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BC1047 • 
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THE JOINT CHIEFS OF STAFF 

Washington, D. p. 

The Honciri."bte 

Cordeil Hull, 

Secretary of State, 

Washington, D. C. 

Dear Mr. Secretary• 

.. The ~ase with ~hie~ cod~~ ~n~_ ciphers of the non-military 

agencries of our enemies are being broken by our experts has ....... 

raised t~e. q~estion. in the minds o'r t~e _Jo.~nt -C~ie~s of ~~a~r _ ... -· ..... - ............ -

as ·to th~ sec~rity -~f co~e~-~nd ciphers used by similar agencies 

·-I 

or our Government. The ability of our cryptanalysis experts to 

. . decode enemy messa~~s has been our most valu~bl~ eou!ce or 

inf~rmat:i:~~· ~e Qhiers. o!_ ~~a_rr wish that you be informed o! 

--=- - ... - _;-~1 ...... ':.'· . 'Ill : - - .. - • - --- --=- - --: - - . - - - ~ .. this, as a matter of great secrecy, in order to emphasize the 

-iliipor~ance of security in these matters. The~ teel t~~t-we must 

--,..-:_ ,-_;-: >::_ :'._ : . ···:..:,~: _·_.:.:·-:·:~-:-.::·: :•.,::-· :·~-- ...... - cred:l..t, t..P!i:! en,emy w~~h hav:i_ng its ~x.per!s !~o ar·e just as cap~ble 

" ."' ......... .:._ • : I' : ... ... ~ "•"• • O • I 0 ~- 1_ "';.·:.~- "~- ="' • .. 0 :·: 0 ·~ «,.• • ..... : • o .... p '!..:.:.'-!'I ·---

~~ ours in cryptanalysis work. - • -.r They are deeply concerned over . - . 

_._~ne .ha·~.;rd.8 t"9 11'/hi-cli our ;h.fp-s -and· .·troops may 'be exposed thr"ough • .... • ~ ..,. • - • • •• - ":-• - _·;1 •,- - --;. .... - - ... -- .. .. •• '" • ..... ... ..... .i "f_ .. .__. •r...,. . -

the use of ineffective codes by various Governmental agencies. 

The Joint Communications.BoB.!d, an agency of the Joint 

Chiefs of Starr, has at its disp~sal the best cryptographic expe.rts i~ tlie U:nite_$i ~t~t,es ... Th~ serv:i,ces of 1!.hese experts can 

- -- -

be made available to the State Department to analyze its codes 

~ ..... '.r • .':L.::. .• "·· ~•· ·-. - .... • •• ·, '• ;.:;- • -

and c_~phers trom t_~e standpoint or security and ~o i:iugge_st" methods 

for their improvement. It_ is ~oped that you will make use of the 

services of these experts. This can be acco~plished by communi• 

eating with the Secretary or the Joint Chiefs of Staft~how:ill - .. -.. - - - -

• - ...... ,,_ ... .I" 

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·~~ tha neceea~ry arrangements. 

.... • :- -:. •• ·':"' =.':"'"-:-::--- - -

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- .. _ ..... FQ~. t~e Joint.Chief~ of staff: ...... .::., 

, ... •' a: rJI - r"' ~ .......... .ii, .. •. ~ 

• 

·• ,.~~-...... · .fOiiN .. R~ -::tJEANE:, 

.~figadier General., u. s. -· ~-··· · . -....Secretarr. 

. SIYU.Al\ LET'rii.RS TO ALL O'l'HER 

·NON~Mil.ITARY AGEl~CIES WHICH 

USE CODES AND CIPHERS IN THEIR 

:@W.WNtCATIONS. 

·~-- ··-

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