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14 ~ovember 1951 

UEJUWIDUK FOR CAPTAII HOL'IWICK 

SUBJECT: Request for Japanese TICO!I Data 

Reterences: (a) SBB,G-2 MeD.o dated ll October 1951 

(b) AFSA-02 Jlemo dated 12 October 1951 

l. Fo:nrarded herewith is a memorand.\Dll tram. the Chier, Training 

Division transmitting a list of Japanese na.tiom.ls employ-ed during 

World War II in signal intelligence activities (Tab A); a selection 

of these expert.a by' work area (Tab B); and a list of Japanese members 

ot the Chinese Nationalist Arrq Intercept Unit in Peiping (Tab C). 

2. These lists, which were prepared in the office o:t the Chief, ~nillg Division, are accanpanied by' eight documents from the TICOJl 

Series pertaining to Japanese signal intelligence during World War II: 

DF-158 General outline ot the codes used by the Red 

.tu:my GrolUld Forces, Air Forces, and Border 

Guard Units. ~anslation ot an unsolicited 

letter and report by a Japanese national 

FWcunaga EICHII, who had been stationed during 

the war on the northern border line ot Russia 

and !la.nchuria. 

DF-159 Interrogation ot KOTANI, former Japanese 

!fil.ita17 Attache in Russia and Bulgaria.. 

Answers to two questions put to KOTANI on 

(1) the advantages and disadvantages ot radio 

intelligence, and (2) personnel who could be 

used in radio intelligence service (15 persons 

named). 

DP-161 Interrogation ot YAMABE, Hidehiko; IT...ANAGA, 

ShoJdchi; TAKEUCHI, Gaichi. 

DP-162 Interrogation ot ICAWARABAYASHI, Tcshikazo, 

tomer member ot the Special Intelligence Unit, 

Nort;h China Area .Ariv Headquarters, Peipi!Jg. 

DF-163 Interrogation ot OTA.11I, hkashi, f'omer member 

ot Special Intelligence Section, Ch•ang-ch•un, 

hantung Artq Headquarters. 

DP-164 Interrogation ot Japanese national, KAWAOirA, 

Tad.ao, t01"JD8J" member ot Special Int.elligence 

Department., Japanese Arsq aid later (1946-48) 

empl.OJed b.T the Chinese National.1st Arm;r 

Int.el..Ugence Department. 

-; 

Declassified and approved for release by NSA on 05-20-2014 pursuantto E.O. 1352a 
REF ID:A56917 -... -- , ' 

l4 November 1951 

SUBJECT: Request tor Japanese TICOU Data 

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DF-169 Reports on the ~c Section of the 

Japanese Foreign Office. Translation ot 13 

Japanese TIC<ll reports resulting trm the 

investigation ot the Japanese Foreign Office. 

TICOJl/s-2 Anal.7sis and evaluation of the Japanese 

Intelligence Service and its et.feet on United 

States securit;y. A study made fl'am. material 

available from TICOll am other sources through 

1945. 

3. The above list, which canprises those Japanese TICOJ! documents 

which have been issued in the TICOPI series, form onl.1' a small proportion 

ot the Japanese documents available in the T!COll tiles, the great 

majorit7 of which have not been issued in 8.ff3 !'orm. aDi remain untranslated. These documents (rete?'1"ed to in the appended lists as JT/U.V, 

JT/IVI, etc.) are held in the original by' the Chiet, Training Division 

am are not available, tor the most pa.rt, except in the Japanese '!'ICOM 

collection. To examine these files thoroughly and to obtain the :na.x:imma 

amount ot intelligence available from. them would require the services ot 

a person skilled in the Japanese language and in the techniques ot 

research. Since the Chief', Training Division does not have on his start 

a person with these quali!"icat.ions, it is recoll11!1.ended that consideration 

be given to the assignment ot a competent person to this task, particularly in view of the revived interest in Japanese signal intelligence 

activities. 

4. It will be noted that the list forwarded by the Chiet, Training 

Division contains onq 60 names. I have been informed that this list 

was compiled with a view to selecting those Japanese who are considered 

to be the most campetent or most easilT available. There are, ot course, 

hundreds ot names to be abstracted trom the tiles, particularly with the 

aid of a Japanese translator, and this might well form a part of the 

project suggested above in paragraph 3. 

Inclosures: 

4 a,.. ot Tabs A,B,C, 

DF-158,159,1611 162, 

163,169 

TICOlf/S-2 

cc: AFSA-.24 

j 

• ~J J 

WILLI.All F. 'PRnDlfAN 

Consultant 

;"'°"" I" I ._"' T - - II 

~> - ... 44 t -_... -:,.J 

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REF ID:A56917