[Secret]
 
From: Tokyo
To: Washington
27 November 1941
(J 19)
Circular #2409 (In 4 parts, complete)
Rio de Janeiro to Santiago as Circular #324
 

 

(Washington sent to Ottawa, Mexico City, Bogota, Caracas, Havana, Panama, New York, and New Orleans as unnumbered message.)

 

(Part 1)

 

Handle as Chief of Office routing.

 

With international relations becoming more strained, the following emergency system of despatches, using INGO DENPO (hidden word, or misleading language telegrams) is placed in effect. Please study this carefully.

 

Make up a table with the left column containing the code words and the right the corresponding plain (decoded) text. Please see that there is no mistake in transcribing this.

 

Example. A message meaning:

 

"Japan and U. S. S. R. military have clashed", will read:

 

"HIJIKATA and KUBOTA, clerks, have both been ordered to your embassy on 15th (begin spell) S T O P (end spell)."

 

In order to distinguish these cables from others, the English word S T O P will be added at the end as an indicator. (The Japanese word "OWARI" (end) will not be used).

 

(Part 2)
 
 
Code Word                                Meaning
 
ARIMURA                  Code communications prohibited.
ASAI                     Communications will be by radio broadcasts.
ASAKURA                  Will communicate by radio broadcast. You
                         are directed to listen carefully.
ASIKAGA                  Reception of overseas broadcast impossible
                         due to interference.
AZUMA                    Pressure on Japan increasing continually.
EDOGUTI                  Prepare for evacuation.
HANABUSA                 Preparations for evacuation have been com- 
                         pleted.
HANAZONO (?)             Prepare to entrust Embassy property to suit-
                         able foreign envoy (or consul) there.
HATAKEYAMA               Relations between Japan and . . . . . (blank)
                         . . . . . have been severed.
HATTORI                  Relations between Japan and . . . . .(blank)
                         . . . . . are not in accordance with expec-
                         tation.
 
(Part 3)
 
 
HIZIKATA                 Japan's and . . . . .(blank's) . . . . 
                         military have clashed.
HOSINO                   Japan and . . . . .(blank) . . . . . are enter-
                         ing a full fledged general war.
IBARAGI                  Communicate to us probable date of breaking
                         off of relations between Japan and the coun-
                         try to which you are accredited.
INAGAKI                  Have you - -?- - the . . . (blank) . . . mat-
                         ter?
ISHIKAWA                 I have - -?- - the . . . (blank) . . . matter.
KASHIWAGI                We are commencing military action ? against
                         (blank) . . .
KOBAYAKAWA               Stop issuing all entrance and transient visas 
                         to Japan, to persons of . . . (blank) . . . 
                         nationality.
KODAMA                   Japan.
KOMIYAMA                 China.
KOYANAGI                 England.
KUBOTA                   U. S. S. R.
KURIBARA                 France (?)
KUSUNOKI                 Germany.
MATUTANI                 Italy.
 
(Part 4)
 
MINAMI                   U. S. A
MIWATA                   Canada.
MIYAZAKI                 Mexico.
MOROKOSI                 Brazil.
MOTIZUKI                 Panama.
NAGAMINE                 Argentina.
NAKAZATO                 Thailand.
NAN GO                   French Indo-China.
NEGI (?)                 Netherlands East-Indies.
OGAWA                    Burma (?).
OKAMOTO                  Malaya
OKUMURA                  Australia.
ONIZUKA                  Union of South Africa (?).
ONODERA                  Enemy country.
OTANI (?)                (Possibly: friendly, or allied country?)
ONISI                    Year
SIMANAKA                 Day (?)
SAKAEIBARA               Tsuki) Month
SIGENOI                  (KO) Paragraph
SANZYO                   (Toki) Time
ITIRO                    1
NISAKU                   2
SANTARD                  3
YOITI                    4
GIORO                    5
MASAROKU                 6
SIMETARO                 7
YASOKITI                 8
HISAMATU                 9
ATUMI                    0
 
25609
JD-1: 6985                                   (Y) Navy Trans. 12-2-41 (7)
 

(EXHIBITS OF JOINT COMMITTEE , EXHIBIT NO. 1 INTERCEPTED DIPLOMATIC MESSAGES SENT BY THE JAPANESE GOVERNMENT BETWEEN JULY l AND DECEMBER 8, 1941)