REF ID:A487648 

.,,.--

!Declassified and approved for release by NSA on 11-08-2013 pursuant to E. 0. 1352§ 

----~I~-, 

.• l~-i 

i~: ,~: 

· .. lP.lt. 

···-~t_ 
«,.---~-

) 

I . 

~ 

DATE 

#Har. 13 

#Mar. 13 

#Ma?'. 13 

llar •. 14 

Jlar. 18 

#Mar. 18 

#JIAr. 19 

•1ar. 21 

A 

N 

A 

A 

A 

A 

A 

A 

JD# SIS# OTBBR fl 

.......... 

1472 

1479 

--.--

1540 

----- 1572 

....... 

15306v Ha1nk1ng #58 

15351·// Tokyo 216 

15330y Tokyo 222 I 

15341)-l~Hsink1ng 

15342). 

15425 v Tolqo 

ij~~ 1555Q Y:i:olqo 

to 

15555/ 

#59 

126 

2lg 

#40 

••Mar. 22 A ·--· -~--- -----

#81 

286 

308 

BRIEF 

Foreign Propaganda Conf'el'ence • 

Japanese-Russian Cooperation. 

Q3t the Russians to accept the 

Ribbentrop proposal. 

Propa.sanda towards the South Seas. 

Put Terazald. in oharge of-1nformat1on and propaganda. Southern Advance. 

German-Soviet Relations: ahange in. 

Trade-agreement between Japan.and USSR. 

SIS Memorandum predicting German 

attack on Russia. (llemo not ava11- 1 able.) Given to State Dept. , Seoure intelligenoes by bribe. I 

D1nnel' wl th Admiral Raeder. : 

Gel':mall1 plans to attack Russia.·-. 

It ls necessary for Japan to 

attack Singapore. 

APRIL 1941 

DATE JD# SISj OTHER # 

~Apr. 3 A 1806 l59Qrel".lln 

#Apr. 4 A 1826 15~ ~ ' 

Apr. 3 N 1829 15 Bate.vie. 

Apr. 5 N 1842 l5fo6"'' Honolulu 

4t9pr. 18 N 2066 16 09!/'We.sh. 

#Apr. 19 N 2099 16455V"Tokyo I 

#Apr. 29 A 2251 l674l~ash. 

... Most important 

v--- Ver7 important 

-- Important Ubllll!Lrked Nol"ll&l 

#5uppleaentarr 

#56 

1·42 

#4} 

2,0 

171 

253 

I 

G~=parat.:l.ons f:or w3.l' with I 

Russia.. 

M1l1 tary campaign in the lowlands. ~ 

Typical Honolulu 8p7 Report. 11As a resul:t of the Japa.neae-Soviti! :Neutra.lity Pact. Japan is at last 

fl'ee to use force in this area ~Southwest Pac1r1c)." Our 5outhvard Move vould be 

halted." . "It 1s trul.7 a ms.rvelO'llS thl.ng 

that ~ our relations vith Koacow 

h&ve been adjusted." · 

Early intentions ot Ger:man7 to 

attack Ruasiae 

\ 
DATE 

,..,, ') 

.,, 13 

• ., 13 

#J.f&7 13 

#Mar 15 

#llaJ';16 

#1&7 ·21 

••11&1 22 

,.--...._ 

. Kay 26 

DATE 

#June 3 

#June 14 

#June 16 

#June 16 

#June 17 

#June 27 

----------~--- - ·.-- -REF-::.-ID:-A4-B-7-6-4-B--- --- --- -- ~--- -·- --- r "··r • t -

~'>Ir.,:. . 'r;= 

lRDEX OP TRANSLl'l'IOBS AM> DllllRAl'IDA BB PEARL BARBOB - COR'l' •D 

• JD# 

N 2452 

A 2509 

N 2513 

NQ 2514 

N 2549 

N 2562 

N 2619 

N 264:; 

A 2675 

iID# 

A 2791 

N ---- N ........ N ....... N ---- N 

JIAY lS!4l 

.5I5# .6Tmm t; . '. ) • BRDP 

1708~okyo 202 "I am most &.D:Xioua to see the 

United States diecontinue 1ts 

l716l~olqo iol1c7 of aiding Chiang ltai-shek.• 

396 Adv1ae the President to counsel 

Chiang l'.e.1-ahek to respond to 

17263~okJo 2i6 Japanese ~ce overtures.• 

Transmit 217 to the &eoretar1 ot 

State without delay. ~Precedent 

l7264~Tokyo for TokJo #901 & 902~ Dec. 1941.) 217 The u.s. Govt. agree to a.dvise .......... I • Chiang IA1-shek to enter into 

i7272/wash. 

direct negotiations w1th Japan. 299 Japan ha• absolutel7 no aggressive 

17305vTolqo ambition~ 1n the southern area.(I). 2}0 Our request that the United Statea 

17423 /Wash, stay out or the war. 

320 Japanese eQuthward expansion. 17473 ·Berlin 569 0 °'11' dreams or eouthvard expanaion ... ••• "To turther bolster the spirit of 

17536/ToJqo 440 

the Tripartite Pact," 'WiI>e real 1.ntentioria of the Ger9ll 

Govt.-

JUNE 1941 

SISf) OTHER #= 

1774V Rome 

------ GZ-1 ---~ .... OZ'-9 

----· GZ•lO _. ........... GZ-15 ____ ...... GZ-26 

• • 

BRIEF 

The GerMn. Govt. baa recentlJ" completed all preps.rations for· attac~ 

1ng Soviet Russia. 

German Plana to attack Rueda. 

Cr1e1s in German-soviet relations. 

Japanese-United States negot1at1oDS Germe.n-Soviet cr1a1e. Prediction ~ 

e\U'pr1ee Get'mS.n attack. 

Japanese att1·tude toward Sov1etGerman c~1e1e. "It will be well tcr 

the Imperial Govt; to assume a vers p~udent attitude in res~ect to th1B .German~Soviet war." 
DAD 

#Jul7 T 

#Ju11 9 

#JulJ 9 

#JulJ 10 

*Jul,- ~4 

I . 

DA.p 

r" 

- 48· 4 

#Aug. 9 

- -- -- -- -- ----REF -ID: A487 6-4 B-- -

INDEX OP TRANSLATIONS AND JIBJIORARDA D PEARL HARBOR - CONT'D 

JOLY 1$1 

,JDfl 

A ---.. 

A .......... 

N :;515 

A ....... 

N -··-

JDfl 

B ·---

N ....... 

,SIS# .OTHER fl. 

----- I,B, 1•155 

19l26r,B, 1-157 · 

i912A . 1912 

i9197v-Wash. 46; 

.......... I.B. 1·158 

......... ..... ._ ..... ~--~· ... ._. ...... 

• BRDP 

"The Jap G9vt. - do .not at present :reel compelled to modi.ty their· -. polic7 towards the ussa.•(JD 3lJ.61) Plans for utilizing American -n•sroea for eap1o:nage and sabotage - ~JD 3490) . 'Ir ve are deti.D1tel1 determined t 

me.ke_a Jid.litar,- stroke southvard. 11 

Comments and paraphrase ot JD '515-

[!.ote s llID missed the point cos- - pletel7.7 . Memo to"1taval Aide to the PresideD 

re·w1thdr&1ral of Jap merchant 

veaeels trom the Atlantic Ocean. 

AUGUST 1941 

SISf ,O'l'KER 

----... GZ·l 

.. ........ GZ-4 

fl. I 

Jap Decisions at Imperial ContereAce# Jul7 2., 1941 - to break 

British-American encircle~ent and 

ara tor aa all-out var. 

Preparations tor the aouthvard 

advance eball be' reenf'orced. 

#Au.g. 10 N ·--- --··- GZ-5 The belief ot Ambassador Oshima is 

discounted by the Tok:Jo,Gover.mnent belief that the var will continue 

into next 7ear, vith the Russians 

#Aug. 16 N -··· ---·• GZ-9 

*Aug. 28 N 4814 2l575~Bet-11n 

• , • 

1066 

_,_ 

holding in Siberia. · - NOl!Ul'a•a estimate of u.s. Policy. (u.s. ie determined to take drasti 

action to counter f\ll'ther attempts at Japanese expansion.) The German-Soviet var aa deacribec, 

by Ma.reh&l Xe!tel (Gel'mSn7 con-

,quer!PB Ruaa1a), 
__ REE:,_ID:A487~6~4~8 __ 

·' ' 

INDEX OP TBANSLA.TIONS AND MBJIORAtfDA BB PEARL HABBOR - QON'.r •D 

SBPTIJl&D·l~l 

DA'l'B . .JD# .SIS# . !OTBD r/i. .BBDJP 

#Sept. 4 A 4929 21784~Rome 556 Essential to ca~r7 out boldly at 

217 8 5 "'. . ' *hi.it. time OUl'. pol107 or southward 

adva:nee. · ' #S.pt .• 4 A 4940 21790"' Tolqo 528 U .s. 00Japa.n Negotiations - See JD1 

21786 r Tokyo 

4941 . ~ *Sept. 4 A 4941 529 Ja~ese Draft Proposal ot Sept.6, 

to · lS 1. (Japan demanda conditions · 

21788 . tba.t the u,s. c8.Dllot poes1bl.J agr• 

#Sept. 52,4 '2237·7("" Shanghai. 

to.) , 19 N 808 "Japa.n•e· va.r preparations against the Soviet." I *Sept. 22 A 5360 22550"' Tokyo 590 Basic P.rms ot peace betveen Japan I and China. (Ja.p troops 1n China & 

#Sept. 23 A 6'81 22588 v' BerlU>. 1161 Recognition of Mancbukuo.) 

I repeated.l.7 re4'l1lated - our .. Govermnent•s real.na.tioMl pollc;r • 

: ~pt. 26 N. 5438 227ef Tolqo 595 JaJtillese Proposal of Sept. 25~ ' 19 l (submitted to State Dept. on 

Sept. 27, 1941).(Am\lifiec the Rote 

or Sept. 6th (JD 49 l) and attempts 

to force the u.s. to rel1nqU1ah its poaition. It is apparent that 

the negotiations are getting novhere and that the Japanese beliew 

that the u.s. v1ll baok dovn or 

resort to appea.seme·nt 1r the7 put 

221a3/ Tolqo 

up a determ1ned .tront.) 

' #Sept. 26 A 54-1 597 NOmUl'& is bawled~out. 

#Sept. 27 A 546i. 2~ 7/wash. 852 NomUl'a apologizes. 

Sept. 30 A 5510 22 'io./ Tol.70 614 Thie whole matte:r concerns the 

China Incident and the South Seas 

• • .g.yestion • 

' I 

1~ 

.. 4 .. 
REF ID :A487648 --

·. 

~~@~~1f INDEX OP TMN3LATIONS AND XEKOBANDA RE PEARL HARBOR - OON'l''D 

OCTOBER 1~41 

DATE l2/i. SI§t OTHER fi. BRIEF 

*Oct. 2 A 5598 v22g87 / Wash. 881 Interview with Adm. Stark. "The 

Admiral stated that 1f the United 

States fights &'two-ocean war she 

will have to defend herself in 

A3o34 / wash. 

the Paci.fie." 

#Oct. 3 N 559, 869 Rel&tions ot Terasaki (First 

#Oct. 6 56~10 v-23114-J Wash. 

Sec•y) and Schmitt (spy). 

A 901 Nomura sounds a warning against 

#Oct. 7 5650 ~)162 .; ria.sb. 880 

further aggression. 

N "' Nomura advises caution: "Arter .. -........ 

Japan ha.a had time to evaluae the 

results let her detel'tnine her 

course." 

,2'i66 J Waah. ,, #Oct. 7 .N 5661 v· ·i~· 894 Nomura submits bis humble op1n1on1 "The only remaining problem is 

that concerning the evacuating of 

5693 v-2)220-1 1;'"1---' 647 

our troops. (trom China)." · ~ct. 8 A Tokyo The intel'nal situation here -

'bet-. 5696 ~260' Tokyo #83 

would ~ot permit further delay. 

9 A Ar·ea. designations 1n Pearl Harbor 

5730 ~12 J Honolulu 'ry #41 (for epy reports). Oct. 10 N Dock & Moorinf designations 1n 

#Oct,. 5738 -:R(18 ._-__ Harbin 'rv 

Pearl Harbor for spy reports). 

10 N 129 Promise ot American aid to Russia. 

.#Oct. 13 N 5779 3421 _,. 'l'okfo 658 "The situation at home is fast 

approaching a crisis." 

#Oct. 13 N ----- I GZ-9 Crisis 1n Japan (see JD 5779). 

*Oct. 15 N. 5838 ·..--23513 ·J Berlin 1237 Ambassador Oshi:!la urge~ Japan attack Russia - "at the time ot 

the fall of" Moscow" - and adds 

"It is-absolutely essential for ue 

to make sure of the resources and 

markets of the south. 11 

*Oct. 16 N ----- GZ-10 ..... - Kl·amer 's Memo to CNO with para-

#Oct. 16 5854 23570 ~-~Wash. 943 --, phrase of JD #5838. A Interview _with Adm. Turner. 

#Oct. 15 A 5854 23516 (Withdrawal of Jap troops from<h1a 

#Oct. 16 N 5888 1"'23622 Berlin ·1236 Protest on Domei editorial. 

Oct. 17 N 5898 v23q29 Rome 661 Evacuation of Japanese merchants 

23631/ Tolqo 

from Europe. #Oct. i~ A 5901 671 German pressure on Japan. 

#Oct. N 5919 ~36.7: ~~~' 664 "My (Paulucc1 1a) personal opinion ,.,._ is that Japan should strike at the ~p·Z-~ ~s1S.ti'-, Soviet Union 1mmed1a tel'f. " ~ 1fUCt. 18 N 5923 v2367 · Tokyo 682· Resignation of Jap cabinet. 

#Oct. 20 A 5941 v~'efJJ- Wa~h. 959 Conversation between Teraze.k1 and 

~ Adm. Turner • 

Oct. 23 A 6017 23859 vWash. NomUl'a submits his resignation. "I don't want to continue this 

hypocritical exiatence deceiving -5-
#Oct. 27 A 6084 ---23996 Wash. 

. #Oc.t. 28 A 6116 v24o46 Shanghai 

#Oct. 28 N 6118 ""24070 Mex,.Cit7 

*Oct. 28 N 6138 v24125 Tok:o 

#Oct~ 30 6175 .r24192 Wa3h. 

·-."-.. 

361 

422 

674 

1004 

-6-

other people ••• As a man of 

honor th1e 1e the onlr war open · to me. " (Thie 1 e vh'y lturusu we.a 

sent.) 

"The Chier of' Staf't ba8 sent the Militar~ Atte.ohe some eecret 

advice. Is this the ruture polio~ 

of the Government." · 

"At the time ot e. Japanese advance 

to the North." 

.Sec•y Xnox•s statement that there , vould be 1mm1nent action in the 

Far East. 

Japanese nations.ls evacuating the 

N.E.I. 

Talk with Adm. Pratt - nsta.rk 

cannot be said to be a •strong• 

111dividua.1, Admiral Pratt said •. " 

. . 

. ' , . 
DATE' 

Nov. l 

Nov. 4 

*Nov. 4 

*Nov. 4 

Nov. 4 

#Nov. 4 

**Nov. 5 

#Nov. 5 

#Nov. 6 

Nov. 7 

Nov. 8 

-- REF_ ID.:A487648 

..L'.fi,Jfli'i~i"-;::; 

@l.£[1);:':·1: ~ 

INDEX oP TRANSLATIONS ARD MEMoRim>A·RE PEAM. HARBOR - CON'l''D 

NOVEMBER 19'f l 

JD// SIS# OTHER# -

N 6204 ""24249 Hsinking 697 

N '6233 v-24322 Tolcy'o 343 

A 6248 24330 Toky,o 72? 

:i.11-J3 I 

~ tf-fJ:J... 731 ~ <1-8 g3 

·A 6249 ..---24334 Tolqo 726 

to 

V24337V' 

A 6250 ~24338 Tok.J'o 727 

A 6251 v-24339- TokJo 730 

N 6275 v24}8~ Tokfo 734 

A 6302 vef4439 TokJ'O 739 

· N 6320 -'24479 Wash. 1040 

N 6335 /24533 Manila 722 

-7-

. BRIEF 

Border cleah. "Let the matter be 

forgotten. 

·Japanese na t1onals evacua t1ng the 

Ph111pp1ne 

Counte~ proposals will be given 1D 

J'f26 & 727. Conditions both within 

e.nd vti thout our Em.p1?>e are so temt · that no longer is procrast1nat1on possible. Th!~ is our.last etrortThe success or failure of the 

pending discussions vill have an 

immense effect on the destiny of 

the Empire or Japan. Proposal "A" - Submitted in Part 

to State Dept. on Nov. 7~ 1941. 

"How hard have we fought 1n- China 

for four yeaz.s! Uhat tl'emendous 

sacrifices have we me.de! They must 

knov this •••• In any case, our 

internal situation also makes 1t 

impossible tor us to make arq f'u.r•ther comiromiee. 11 _ 

Proposal "B - Never subm1 tted. 

"A. last effort to prevent somet~ 

happening." 

"Ambaa;!&.dor Kurusu is lea v1ng by 

clipper on the 7th. He is carr11ng 

no additional instructions (!) It is absolutely necessary that a! 

arrangements for the signing' of 

this agreement be .completed by 

tho 25th or this month.' (or utmost 

secrecy.) 

Ambassador Xurusu left the 5th tor 

(Shanghai(?)). We are sending Ambassador Kurusu 

to·-shov our Empire' a s1ncer1 ty ••• 

To make it sound g~od we are tell· 

1 ng the" Plib11e. • • oth the Army und the NaVJ' are pleased. (Notet 

See JD ·#6017. ) Thr;re is danger that America-. w1U 

see tb.l'ough our condition. If we 

have made up our minds to a final 

course ot action 1t vould be the 

part of visdom to keep etill about 

it. 

Sp7 report on u.s. aircraft in the 

Pb111pp1nee and analysis. (Note: 

This is why"we did not worr7 too· 

much over Japaneae espionage.) 
-REF ID:A487648 

INDEX OF TRANSLATIONS AND MEMORANDA .RE PEARL HARBOR - CONT'D 

NOVEMBER 1941 - CONT'D 

DATE JD# SIS# OTHER # 

Nov. 12 N~·! ...... ----..- ................ . 

*Nov. 12 

#Nov. 12 N 6416 v24654 Tokyo 763. 

r-v. 17 A · 6s4o --2'4as3 Hs1nk1ng #l 

H v• 17 A 6541 ,.,,24854 Hsinld.ng #2 

(Appended 

to #1) 

*Nov. 17 A 6542 ~4856 Hsinking #3 

(Appended 

to #l) 

**Nov. 17 A 6553 v24877 Wash. 1090 

& 22 ,24857 

& 

~139 

-8-

BRIEP' 

"Dissemination to 'Wh1te House." 

(Tb1e memorandum in E:ramer•s band· 

writing records reasons for giving or1g1Dal translations to Pres. 

Roosevelt (& Seo•y Hull) after 

Nov.12, 1941. Prior to that ti.me 

Memoranda f orwardinS Paraphl'asee or importe.n·t messages had been furn~shed.) 

The United States i3st111 not tul~ 

awa~e of the exceedingly criticalness of the e1tua.tion here. The 

date set in message #736 13 a · definite deadline. The situation 

is nearing a climax ••• time is 

indeed becoming short. 

Germany putting p~e9eure on Japan 

to get tough v1th the U.8. , Umetsu to Kurusu (Nov. 6, 1941) •· 

Manchukuo-5oviet Relations. (It 

would be impossible fo~ us to fight the Soviet Union unless something unforeseen happens. The Kvantung military ~omm&nd is restraining the forces there from any rash 

action. The Soviet is also endeav- 01~1ng not to antagon1 ze our count1' 

Estimate of the Fus~o-German War. 

(The foundationaof the Stali~n 

regime are very firmly fixed. The 

outlook for any early close to 

hoat1lit1es 1n Euro~e is fading.) 

Nomuz•a. • s sva.n· song (Nov. 14, 1941). (The policy of the American Govt. 

in the Pacific is to ::top any further moves on our part, either 

eou.thward or northward. They a:re 

contriving by eve~y possible means 

to preparl3 for actual vartare. It 

is not their intention to repeat the Munich Coni,erenoe. The apex ot 

Germen victories has been passed. The United. Ste.tee would not favor 

us at the sa.crif1ce of Chin&: This 

war will be long, and whoever can 

hold out 'till the end will be the v1cto~e. I vou1d like to caution. 

patience £or one or tvo months to 

get a clear viev of the world situation. This would be the best plan) 
I 

REF ID:A487648 - --- ....... 

\ 

- ' ... 

INDEX OP THA?!SLATIONS ADD ~ORAJIDA RE PEARL HARBOR .1. OOIIT•D 

NOVEMBER 1941 • OONT•D 

DATE JD# SIS# 9TJIER # BRIEF 

Nov. 17 A 6638 24878v Tokfo ---

~~ .a~o~ 

~•Nev. 22 A 6710 25138/ Tokyo 812 

Nov. 24 N 6731 ..-25171 Tolqo 969 

#NOV. 24 A 6737 . .-25174 Wash. 1148 

~•Nov •. 24 A 6744 ~5178 · Tokyo 823 

~v. 26 A 6801 ,,-25322 Tokyo 2319 

: #Noy. 26 A 6841 25344~Tokyo 836 

Nov. 26 N 6850 25392 Tokyo 2354 

: f*Nov. 28 N 6875 25432./ Tokyo 2353 

------- ~---

__ ..... _ .. Appended to 

JD 6875 

Nov. 28 N 6890 ~443 ' · - .. ·. -··. 

#Nov. 26 A 6891 254 35 )('Wash. ~b~ &5'9" 25436)/ \'g~~ 

Repl7 to Nomura. (The fate ot our 

Empire hangs by the slender thread 

or a few days. I set the deadline. · There will be no change.) · There a.re reason! beyond 'lO~ 

ability to guess why we v.anted to 

settle Jnpane2e-Amer1ca.n relati'ons 

by the 25th, but 1r the signing 

can be completed by ~ 29th~~ · have decided to wait until t t 

date. Thi.s time we mean 1t that ta 

deadline absolutely cannot be 

changed. After tbet things are 

automaticallz·going to happen • 

We would. welcome peaee. between 

Germany and. the Soviet Uni~n • 

Continue your efforts in guiding 

newspaper opinion. The time limit set in my #812 1s 

in Tokyo time. (See JD #6710.) Should negotiations collapse ••• ve 

will completely destroy B~itish 

and _l\me1.,1can power in China. Keep. absolutely quiet the existence of 

theBe decisions. -{Circular to 

China Net - Nov. 14, 1941.) Telephone Code (see JD 6890). Winds Code - Morse {Nev. 19,1941 - Jl9). , Winds Code - Voice (Nov. 19~ 1941 - Jl9). 

(Singa~ore version of the Winds 

Code. lN .E.I. (Thorpe) version of' 

the Winds Code. (N.E.I,(Foote) 

version of the Winds Code. Japan-~.s. • East W1nd Rain 

Ja.pa.n-U. S. S .• R. = North Wind Cloud7 

J.s.pan-Bri ti ah = West W1nd Clear 

(including N.E.I.) . Washington-Tokyo Telephone Conversa t1on Nov. 27, 1941 (2?27- 2334 E.S.T.)--The south, southward 

matter. A crisi-does appear imminent. Regarding nesot1at1one - do not break them off. We have a 

crisis on band and the Army 1e 

champing at the bit. /jfot;eT ifbis 

was the onl1 telephone conversation or any 1mportance.?7(See JD 

6841.) . Our failure and humiliation are 

complete. 
DATBr. 

#Nov. 28 

•Nov. 28 

Nov. 28 

#Nov. 29 

Nov. 30 

.. 

' ' 

INDEX Cf1' TRANSLATION8 AND MEMORANDA RE PJWlL HARBOR .. CONT*D. 

A 

A 

N 

N 

N 

NOVEMBER 1941 - , CONT •n··., . . . . ·. ''. 

JD# SIS# OTHER I} 

' 

6892 ~543'7 We.eh. 

6898 25~•51 Toqo 

689§ 25446~ Tokfo · 690 v25476 .Wash. 

~ ~ ';l...S--4<ir0.' 

6921 25496 /T~k,-o 

1181 

844 

843 

1197 

857 

-10-

~. \ 

\ . I 

. . 

It ia ib•t~er ~o va•.urgent news 

than t'.O :ph$118 1 t. ' 

'l'he :. Un+ ted ·Sta tea baa .sone ahead 

and \preaeq.t•d ·~b1e h-.11at1Jl8 

propC?aal 'of1 Ngv:. 26th)'.· l'legotia· t1ona· .. v111 be llet>.f&cto ruptured. Do not-give the imp,...saion that 

negotiations are br"c:?ken ott. Tokt~ Broadcast ScheCl,:ule. 

Ret •. Wolqo 843, rec·q•enda change 1~ Br~doast Schedur,_ .._ Dov. 27, 1941. (See JD 68991 · · ··- ... Make one more attempt. Please-. be 

caretul tbat this doe' not lead 

to anything like a breaking otr 

ot negotiations. · 

' I ·,_,, 

'· 

\'.\ 
'I" • ' J ' . . 

DATE 

· #Dec. 1 

*Dec. l 

••Dec. 1 

*Dec. 1 

). . 

Dec. 2 

REF ID:A487648 

I1!pEX OP TRANSLATIONS AitD JIEMORANDA BE PEARL BAJmOB " CONT'D 

DECIMBER 1941 

up# SIS#. O'l'HER I 

N 6939 ~545 TokJo 

N 6942 45556 Berlin 

A 6974 "25572 Hatnldng 

2436 

1393 

986 

781 

-11-

BRiil' 

Deatr071ng code• with chemieala. 

Ribbentl'OP aa1d, "It 1a essential 

th& t Japan effect the Kev Order 1J 

Bast Aa1& without losing this 

opportuni t7. " •should Japan become 

engaged in a var againat the U.S. 1 Germall1', .ot course 1 · vould join th« 

V&l' 1mmed1atelJ•" roreign JU.ru.ate1 

Ribbentrop requested tbat the con• 

tent• ot_our talke be kept a atric 

secret. 

The conversations between To)CJo &J 

Washington nov stand ruptured - broken. 8&7 ven aecre\17 to Bitle 

and Ribbentrop that there 1• extreme danger tl'at var ma7 aucldenl~ 

break·out betveen the Anglo-Saxon nat1ona and Japan, and this var. 

m&J' come quicker than &Jllone dreaJJ 

Will not relax our pre•sure on th• 

5ov1et·, but tor the time being ve 

would preter to retrain trom &D7 

direct moves 1n the north. Imprese 

on the Germans and Itaiiina bow !Ol'tagt aecreC11s, (lov ,,o,I"94l 

otea oded meaeaE1.e torvarded bf · , OJI 16 as G?ROP f/lJ-~~ f/lfltJ.4, OJ n<Jr/21. Aleo fOrv&Pded from Londc I 

as Adm1ral9 #104 and 1105. Adm1r· 

alt7 ~153~ adv1eed "To]CJ'o· to 

Berlin #985 or immediate 1nteres_t~1 

The Imperial Govt. can no longer continue negotiations vith the 

u.s. The proposal presented b7 

tbe u.s. on the 26th contains one 

1nault1ng clause. It 1e clearl7 a 

trick. Tlie u.s. baa decided to 

re ard Ja n as an ane • (lov 30, 

• orvar • ~ oa 6 aa 

CYROP rJt;l;I, fJlr/Jll!J, or fll.'/r/29.J 

In the event that var breaks out · vi th England and the u. s. - Peraona to be interned:· . 

!

al Br1tiah nationals • 339 

b America 1t1zens - 81 

d· Natio~ the Soviet observe~ to be obnoxious cbaractera 

with pro-British and Am•rican 

leanings are to be au1.tabl7 

taken care ot. 
., . l 

DATE 

REF ID:A48764B 

~ "-'.':l.l:•.,r -

INDEX OP TRANSLATIONS AND DJIOJWIDA BB PEARL HARBOR - CONT'D 

I DECBllBBR 1941 

mt SIM . OTHER fl BRIEF· 

#Dec. 2 B 6981 ~5604 Rome 768 

482 

Japanese language broadcaetr. to 

Europe. (Nov. 29, 1941.) #Dec. 2 A 6982 v25571 Rio At present we can hear 0Dl1 the 

6130 ~.m. JVJ transmission to the 

U .s. (tfov. 30, 1941.) 

•Dec. 1 · N 6983 25605 V' Tolqo 865 To pr&vent the United States from 

beoo:ming undul.7 auep1e1oua ve have 

been advising the preaa and othere 

tbat the negot1at10Jl8 are continuing. The ,above 1a tor onlt 1our 

inf'ormation. (GY Los 16428. J · !he tOUl' otf1cee 1n London.t Hong- kong, Singapore, and lanila have 

been instructed to abandon the use 

ot the code machinea and to d1apos 

ot them. The machine in Batavia 

bas been returned to Japan. (GY , Los #6432.) 

**Dec. l N 6984 .....--25606_ Tokyo · 2444 

*Dec. 2 N 6985 ....--25609 Tokfo . 2409 Hidden Word Oode (lov. 27, ,1941 - Jl9 • Por later additions 1ee1 ,..-,, 

Dec. ' 

•••Dec. 4 

#Dec. ' 

~c. 4 

·· · ·g:J.)ec. 5 

#Dec. 5 

s 0'1'BBll 

N 6991 25644/ 'l'olqo 111 Make 7our •ahtpa in harbor" report irl'e~ but twice a week. (fiov. 

15, 1941 - Jl9.) 

H 7001 ID #7001 or #6975 1s believed to 

be the (m1as1na} translation or 

1f 7012 ~5656 Berlin 

the Winds Message. Mote trom German Amb&as&dor concerning. vba t ia to be done 1n the 

event ot an Anglo-Japanese and an 

American-Japanese war. (Deo.11 1941 

A. 7017 /25640 Tolqo 867, Waahington burn all cod.ea except 

one copr ot •01te" (Pa-JC2) and 

A 7029 

A 7063 

A 706i. 

"L" (LAJ. Stop uaing the code . machine and deatro7 1t com.pletel7. 'When iou bave t1n1ahed tbie, v1re 

back HARlJNA." Deatro7 all messages tiles and other secret docu-

/ · ments~ (Dec. 2. 1941.) . "'25694 . TolcJo 114 Investigate tleet bases 1n Bava11a - / orlll reservation. (Ifov. 20. 1941 - Jl9 •. 

25773· 'likJo 113 Report ships 1n Pearl Harbor 1 · 

Mam.la Ba7, eto.(Rov.18,19,..1-J-19) 

.-25772 Honolulu Uniaportant sp;y report. (Bov, 18, . b 1941 .. LA.) 

-12-
REF ID:A487648 

"\ ~I ' 0 

~!E>'~ .. nmEX OF 'l'RANSLA.'l'IONS .ABD l.DORANh.( RE PEARL BARBOR . - CONT 'D 

#Dec. 5 

•Dec. 5 

#Dec. 5 

**Dec. 4 

#Dec. o 

#Dec. 5 

Dec. 6 

· Dec. 6 

Dec. 6· 

#Dec. 6 

DEODBBR · 19lf·l 

JD# 5I8(f OTHER I 

N 7080 ,.25781 Toqo 

N 7086 2582' ~/ ToJqo 

N 7091 "25787 Tolqo 

A 7111 25817/ Honolulu 

N 7122 ~8'9 Rio 

A 7125 "25837 Bern'.. 

Waah. 

A 7142 v-2583~ Tolqo 

A 

Tolqo 

Tolqo 

Tolqo 

842 

122 

2443 

893 

222 

329 

1268 

897 

BRID 

The United St&tea might mire a 

protective Qcoupat1on ot the Dutch 

Bast Indies. (Bov. 27, 1941.) In the tuture report even Vhen 

there are no (ship) movements. · 

(Nov. 29. 1941 .... J19.) · London d1econt1nue uae or code 

m&cb1ne and dispose ot it 1mmed1-

atel7. V1re "51TDJU." (Dec. 1, 1941.) ' 

Manchuria v111 take the same steps toward Engl.and and America.·· t~ t 

this countrJ v111 take 1n caee war 

breaks out. American and Br1 t1ah 

oonaular ott1c1als and ott1ces 

will not be recognized as ha.Ying special rights •. Great care eh.all 

be exiarc11ed not to antagonize. Russia. (Deo. lat.) /jfote: Intercepted bJ A'f!Jl!1 at Port Shatter, 

T.H. Received b7 N&\7 in late atte 

noon ot Dec._3, 1941. ·LCT. (GY 

Log 16498. >...t . 5PJ report on Baval vessels in 

Pearl Barbor. (Nov. 18, 1941 -Jl9) ToJcro Oireular 2432 - Additions 

to Hidden Word Code. {Dec. 2, 1941 .. Jl9.) (See JDl6985.} Tok:Jo Circular #2,47. Orders have 

been 1aaued to our diplomatic ottici&ls 1n North America and 

the South Seas. and to all our 

otf1c1e.ls in Br1 t1ah and nether.-

lands territorr to burn all tele- ~ph1c codes except one cop7 ot 

Oite" and "L". (Dec. 2 - Jl9. )· We have completed destruction of 

codes but since negot1at1ona are 

still continuing I request to delay the destruction ot one code 

machine. (Deo. 5th.) DestrOJ' one "B" code.machine And 

use the other for the time being. /Potes #897 vas tbe firat Tolqo 

to Wa8hington aerial sent on 

Dec. 6, 1941. We intercepted 

#897-912 eol!d;J 

See JD #7199 

See JD #7170 · Doe~i praises KATO for good report- ing. 
- --R&~D : A4 B 7-6-4-8-

~ . ,; 

INDEX OF TRANSLA.'l'IONS AND DMORANDA RE PEARL HA.RBOB .. OONT•D 

DECEJmER 1941 - COBT•D 

DATE JD!! SIS# OTHER # BRIEF -

••Dec. 6 A ::. -... ·. Toqo 

·••Dec. 6 X 7143 2584'/ 'l'olqo (1-13). 

**D(~4) 1. B 714, 25843/ Tokyo 

. •Dec. 6 A 7144 ~844· TokJo I 

**Dec. 7 A' 7145 25850/ 'l'olqo 

#Dec. 7 A 7146 ~585' _ Tolqo 

~eo. 7 A 7147 ~5854 .. Tolqo 

**Dec. 7 N 71~ V-25856 Tolqo 

••Dec. 6 A 7149 25838/ Tolqo 

: . #Dec. 7 A 7150 --25857 TokJo 

#Dee. 1 A 7151 .d5858 Tolqo 

901 

902 

See JD #7149, 

JapaJr.tse Declaration ot War. 

(Parts 1-1,.)(See GY Log #6619. 66 20; etc .. ) 

902 Japanese Declaration of War 

(Part 14.)(V•rJ" 1mportant.)(See 

OY Log #6649.) . 904 Re Sf #902 - Be most cautiOW!I 1a 

preserving secrec7.liote1 This vaa ~ece1ved betore #90t - see GY Log #6618.J. 

907 Re rq ~902 - Submit-our repl7 to 

the u.s. Govt. at l:OO p.m. on the 

Tth :rour time. (Urgent .. VeJ!1 

important.) (See GY Log #6648,) 908 Deepe•t thanks to both 7ou &mbaae&dors. (Urgent.) - 910 After deciphering Part 14 of my 

902 and also 907, 908, and 909, 

4estro7 at once the remaining . cipher machine. (Extremely Urgent) 2494 Relations between Japan and Kngl.ani 

are not 111 accordance with e~eci.­

t1one. (In Bidden 'Word Code.) 

(See JD #6985.) 

901 Be '141 844 (JD 6898). The Govt.- bas 

deliberated on the American propo- sal ot the 26th or Bovember and as 

a result we bave drawn up a memo• 

randum tor th• u.s. contained in 

my separate messagel902, in 

Bnalish. This meaaa9'1 is ver1 . lOiig - 1n 14 parts. ~eep it secret 

for the time being. I will wire 701 

in a separate message the time or, 

presenting this memorandum to the 

u.s. Present it to the Americans 

just as soon as_;rou receive 1nstru 

instructions. £Notez #901 was 

intercepted betore #904 and #902. 

See GY Log 16612. 7 - ,· 905 Aceord1ng to AP S'UP_reporta the 

President bas v1red a personal 

message to Bia lllajeet1 the bperor. . Please w1re me the racts, (Urgent) 909 I heartily thank' IGUCHI and YOU. 

~~i'm~~=: (Urgent. ) 

-14-
.. " •,' I [:I'.) 

DATR 

#Dec~ 1 

#Dec. 8 

#Dec. 8 

#Dec. 7 

#Dec. 7 

#Dec. 7 

,:/b:lec. 7 

I *Dee. 8 

· ·- RE-F- -I:-D : A4 8 7 6-4 B 

INDEX OP TRANSLATIONS AND JIEKORANDA RB PEA.BL HARBOR - CONT •D 

DECEMBER 1941 - 001'.l'•D 

I JD# SIS# OTHER I 

A 7157 -~859 'l'olqo 

A 7158 i.-25880 'l'ok)"o 

A 7164 v25B79 Tolqo .. 

; 

903 

906 

911 

912 

118 

119 

2445 

A 7170 v2'5868. Tokyo· 899-

A 7171 ..25851 Tokjoftxtl'B 

A n 75 i.-25845 'Wa.ah,IExtre. 

A 7176 25846/Waah. 1272 

A 7178 25877/Honolulu 253 

See ent.~ after JD #7205. 

See JD #7183. 

see JD #7205. 

See Entrr atter JD #7257. · 

Honolulu retain codea ao long as 

the local situation permits. (Nov. 28 - J19.) _ · Report entrance and departure or 

capital ehipa. (Nov. 28 - J19.) Burn all codes with exception ot 

one cop7 or "Oite" and "L". Vire 

•BARtJNA." B~n all secret documents. Be eepeciallf qaretul not ~o arouse suspicion. (To Habana.) 

(Dec. 2 • Jl9.) Ant1-u.s. Pro~ganda. 

Correction to #902. 

Requests cmrrect1on to #902.L1rote: 

This is vq Noaura was-lateJ 

Japanese attempts to inrluence the 

American Govt. (Dec. 6th.)_ There is conaiderabla opportunitJ lett t ti&~t-advantage tor a aurp1iist these ~laces. 

th - PAX2.) ~nq intercept forwarded ~ tel~tJP• .trom San _ 

•Dec. 8 . A 7179 ~74 Honolulu 

:rranc1sco.J · 

It appears that no air reconna1saanoe is being conducted b7 the 

fleet air arm. (Dec.6th - PAX2.) /!.riff intercept torvarded b7 tele-

#Dec. 7 A 7.183 v-2585~ Tokyo 

'**Dec. 7 A 7184 . 2sas6/ B~~p~at 

#Dec. 8 A 7199 45'a_96 Tokyo 

#Dec. 8 N 7205 v-2592; Tokyo 

#Dec.8 A Tokio 

~ 8 A ... 

7212 ... 25928 Honolulu : lC. 

906 

911 

903 

tJPe f",J'om san P:ranoisco.J - Miniater SAKAllOTO r-eturn to his 

post at once. (U~ent.) On the ,6th, the ~erican Minister 

presented to the Government ot 

this country a British Government 

coJUND1que to the ettect tbat a 

state ot var would break out on 

the 7th. (LA) Send Teraaak1 to bis post 1mlled1-

a tel1. (Urgent.)(Dec. 6th.) - Minor correction to #902.(Dec.7th) Washington send #1286 to Brazil. (U) . , . Honolulu spy report. (Nov. 28 - Jl9). . 

$~~%~~' 

-15-
___ -:- --~~D : ~'1~7!i~ __ EI_ ________ _ 

') ~ I D 

' ' " 

INDEX OP TRANSLATIONS AltD IBMOBAIDA BE PEARL HARBOR ... OONT•D 

• COBT'D - I 

DATE 

Dec. 9 -· A 72i4 ~25943 'l'olqo 2Ji50 Supplement to Bidden 'Word Code 

(Dec. 2 • Jl9), /lfote: Com l6•e 

,514'12 adv1aed "iingapore attaches 

fieat ip;pol'tanc• to Tolqo C1rcul&ts "'and 2450. 6 Circular 2•50 was 

requested bJ OpNav -616~5 and vas 

toi-varded &Com 16 GYBOP ~"''"' Sl1t•1s, a: ·257 (?).see OY Log l6665-b669. . #Dec. 8 A 7257 v2§998 Tolqo/Extra PU:.2 message dated Dec. 6th. Of' no 

importance_ except to shov aol1d 

1llterceRt1on ot Tokro-Vaahμlgton 

aesaagea on Dec. 6 & 7, 1941. 

#Dec. 9 N Tokyo 912 Same as #911 but in PAE2(Dec.7th) Arote: #912 was the l.&et 'l'olqo- Vashington aeriALl sent.' Our tile 

or ToJcro-Wasbington serials sent 

on Dec. 6 & 7, 1941, ia complete.7 ~. 10 N 7280 v26El29 Honolulu 252 The tollov1ng ships were 1n port 

on the atternoon ot the t.l'tha 

a battleships 3 light ol'Uiaere 

16 destro1ers. . Four ships or the Bonolulu class 

were 1D dock. (Dec. 5th - PAJC2.) lif ote 1 Ar'lq intercept to:rvarded 

fb7 mail') trom San rrancisco.J , *Dee. 10 N 7294 i.2605; Honolulu 241 The ueual schedule tor departure and return ot the battloships is: 

leaving on Tuesday and return.418 · 

on Frida7 and retUl'ning on 

Saturda7 ot the tallowing week. 

(Dec. 1 - J19.) /jfote1 ~ intercept. torwat'ded (b7 mail') trom Ban 

PF&ncisco.7 

#Dec. ll N 7299 ~6047 Wash. 1278 Re your #910 we v111 eomaenoe the 

demolition (or the code •chine) and destruction by tire. /Jfote: 

Last PUl'ple meas.a~ sent by Wash• 

1.ngton (Dec. 7th). . #Dec. 12 A 73-,0 v26103 Oant. 512 'l'he ArmJ us comp eted all prepa- rations to move 1mllled1atel7 on 

'l'ba.1. (Dec. 2 - Jl9.) Lfote1 Place 

,,/. ot interception not knoYA;J ~;. 11 N 7335-v-26108 Pek. 625 Coincident vith the begiDning ot 

the war aga1nat Br1ta1n and 

America (Dec. 5th) • /jlote 2 Intercepted at Port Shafter6 T.H. ~[~[ffiff Bece1 ved Dec. 10 6 -1941 - see OY 

J /p Log #671J9-;/ 

-15-
-- REF--ID ~ A4-8-+6-4 8- ----

INDEX OF TRANSLATIONS AND MEMORANDA RB PEARL HABBOR - OOR'l' 'D. 

DECEMBER 1~41 .. COKT'D 

-DATE ll!il;. SIS# OTHER :/i. BRDP 

#Dee. 11 N 7338 L26109 Wasli. 1276 Please wire the December operating. 

expenses tor all ofticea ·toda7. 

4].44 328 (Dec. 7 - LA) .-

#Dec. ll N 7360 Rio. Tok:Jo C~reul.ar #2\31 • lov 29th. 

Add1t1ona to Hidden Word Code. 

(Dec. 2 - Jl9) (See JD #6985) 1 

#Dec. 12 7369 ~214 ~ Bs1nking 

~otes Intercepted at Port Hunt,V!J 

A roapective use of the Evantung 

' "261:;6 ' Arnrt and recommendation against · 

attacking Rua151&. (Dec • .\tb){otes: 

*Dee. 11 7370 /-26145 245 Intercepted at Port Shatter, .B;:J 

N Hono. 81>7 method ot colllUD1cat1on bJ . s1~ltu XGMB Vant Ade-. (Dec. 3-

PAJt2). tJfotei Intercepted at Port 

Hunt, Va. Translated 1n the rough b7 Jilt&. Bdgers, 1:00 p.m. on Dec. 

6, 1941. Seen b7 Lt. Odr. _ltramer 

~ 

about }:00 p.a. 'l'J'ped amooth and · I distributed on Dec. lltb.J 

fflJeC • 11 A 7'77 '26142 Tokyo 909 When the Japanese Empire commences 

hostilities Jlanchukuo will not 

participate• (Dec. ~th)~oter 

26158 / Toleyo 128 I·ntercepted at Fort Sbaf'ter, TB) ~Dec. 12 A 7381 Honolulu wire 1mmed1atel1 movemente 

of the fleet subsequent to the -tb. 

(Dec. 6 - PAX2) ~ote: Intercepted 

1469 43os< 2556 

at Fort Shatter, T.H;z 

••neo. 15 N TokJo Explanation ot circumatancea 

attending Bomura•s presentation of' / Japanese Declaration ot War to the 

U. s. Govt: "We reallf supposed . · tbat the negotiations had been 

broken otr t1rst, and tbe shooting bad taken pl.ace arter this •••• 

The Preaident•a apeeoh was tr7ing 

to bide the tact'that the United 

States bad been taken b7 surprise &nd tailed 1n the tirst step. 8 -

(Dec. 11 - Jl9) {,orvarded from 

7479 ~629~ Bainbridge Ialan b7 telet'i:.J . #Dea. 14 A Rio 379 To~o Circular #2570:-~he erial 

Naval Air Poree damaged three · battleships and aanlt three 1n the 

~ Battle or Hava11. Those sunk were 

the Oklahona, Vest Virginia, and 

2:5-

Arizona. (Deo. 14 - Plan Language.) 

#Dec. 16 A 7511 '·26J51~ Hono. · Spy report on •neuvers ot U.S. 

'--'26352 Pac1r10 Fleet. (Kov. 24 ~ J19) 

~IE®lffitf:T ~otes Intercepted by AJ'Bl1 at San ranc1aco.:J , \ ,, -17- \ 

- - - - -------
.. 

I 

' 

~ !-;O...-,· 1 '"';P '~ 

I 

----~-----

I {i' ''· . .. -· . ~·-"fl .. ~ r·. ·- . .{ \:_!_: t. : ... ·..... ~ 

INDJ?/~ TRANSLA'l'IOWS AND DMORANDA RI !EARL BARBOR • COl'1' 1D , ~ 

'. J .• 

· DECEMBER t941 CONT 1D 

{D# . SIS# . .-OTHRR #, 

#Dee. 19 

I 

A 7590 ~479 ' Tolqo 

'/ 

#Dec. 26 N 7848 :.--26881 J Pek. 

I 

~ ,., 

, ' 

**Dec. 3o·A .8007 27065/TokJ'o 

'."! 

/ 1 :1 

' ' I 

;" i1 . ' 

j· 

;. 

·' ,·I, ,! 

} ' \.· 

/· 

i ~ 

'1. \ 

'· I J' I\ 

#4 

616 

123 

-

BRIBJP 

Var News Circular f),. '!'he followi 

report, based on vba t the a·ttack1 

forces Witnessed during .the battl 

as well as photographic observations atter the battle, show that 

we bad completel7 deatro1ed the 

United States Pac1t1c Jleet and t~ .American Air Porcea 1n the 

Hawaiian region. (Detailed loeaes 

reported were ver7 accurate.) 

(Dec. 18 - Plain Language) .. It this var does start, this will 

be a var which v111 decide the ~11e or t&ll or the Japanese Empire. ••• It can be imagined tb&t the next war is to be a 

longer one than the Ch1?la Inoiden• : 

(Dated Dee. 3, 19,l.) lifote: · ' 

Intercepted at Correg1dor, Dec. 1; 19~1. Porwarded b7 Com 16 GYROP 

# -'· and received Dec. 8. 1941. 

GY Log #6707.J . . To HonolulUJ· In view ot the 

present situation. the presence in port ot warships, airplane carriers, and cruisers ia ot 

utmost ·importance. Lit :me lGiov 

d&7 b7 da7. Vire me 1n oach case 

whether or not there are, &D.J' ob• 

servation balloons above Pearl 

Harbor. Also Wh•ther or not th~ 

I 

~' 

· warships are provided vith anti• 

mi.ne nets. (Dec. 2 - Jl9} /_fote: 

Intercepted at Port $}18.tter~ T.H. 

Reason tor long delay not known, 

but apparentlJ some one t\Ulbled 1 

the ball. Note on translation sa7e ! 

11Th1s message ve.s received here , ·Dec. 23.~