[169]   Communication Intelligence Summary, 29 November 1941
 
General.-Traffic volume above normal, The traffic to South China still  very high. Automatic transmissions was attempted on the Tokyo-Takao  circuit but was a failure and traffic sent by hand. A good share of  today's traffic is made up of messages of an intelligence nature. Tokyo  Intelligence sent eleven messages during the day to Major Commanders  both ashore and afloat, while the radio intelligence activity at Tokyo  sent four long messages to the Major Commanders. In addition to the  stations normally reporting to Tokyo, radio Yokosuka sent in reports.  This station had not previously been seen to submit reports. The  Direction Finder Net controlled directly by Tokyo was up during the  night with much activity. One message for Jaluit Radio Direction Finder  Station included Commander Submarines for information. The Navy Minister  originated his usual two AlNavs and the Naval General Staff addressed  Commanders Second Fleet Third Fleet, Combined Ail Force and the South  China Units. The unit which has been addressed as the "103rd Air Group"  originated one dispatch today whose address was composed entirely of  enciphered calls. It is apparent that he has no Navy call list. One  address was "JUITIKOUKUUKANTAI" "11th AIR *FLEET*". Since this has  appeared before it is evident that the use of KANTAI is intentional  making the existence of an air fleet positive. Its composition is  unknown.
Combined Fleet:-The arrival of Air Squadron Seven in Takao area is  confirmed. The presence of Cruiser Division Four in that area is not  confirmed nor denied. The dispatches today indicate that the following  units are under the immediate command of CinC. Second Fleet:
CARDIV THREE
DESRON TWO SUBRON FIVE
DESRON FOUR SUBRON SIX
THIRD FLEET CRUDIV FIVE
FRENCH INDO CHINA FORCE
CRUDIV SEVEN
Associated with Third Fleet are two Battleships but their assignment is  not yet definite. Aside from messages which were addressed to Third  Fleet, China and South China Fleets, Combined Air Force and the Naval  General Staff, Commander in Chief Second Fleet was mainly occupied with  the units listed above. Only one message from Commander in Chief  Combined Fleet was seen. This was addressed to YOKOSUKA, Combined Air  Force, CRUDIV Four and BUMILAFF. The HIYEI sent one message to Chief of  Staff Third Fleet.
Third Fleet.-Commander in Chief Third Fleet sent one message to  Comdesron Five, Number Two Base Force, Number One Base Force, Defense  Division One and Comdesron Two and Four. He held extensive  communications with the Commander in Chief Second Fleet and BAKO. Two  more units of Third Fleet made movement reports.
Page 78
Fourth Fleet.--Relatively inactive today. Sent one message to Commander  in Chief Second Fleet, Commander in Chief Third Fleet and Combined Air  Force. He is still in TRUK area.
[170]
Submarines.-Traffic for Commander Submarine Force was routed through  SAIPAN today. He was at CHICHIJIMA yesterday.
South China.-CRUDIV Seven now in SAMA made a movement report but  direction was not indicated. The French Indo China Force Commander  addressed several messages to Second and Third Fleets as well as TOKYO.  The Commander in Chief China Fleet was active in addressing the South  China Naval Bases and the South China Fleets, all for information to  Commander in Chief Second Fleet.
 

(FROM: U.S. CONGRESS JOINT COMMITTEE ON PEARL HARBOR ATTACK HEARINGS; PT.  35, THE CLAUSEN INVESTIGATION, PP. 62-81. EXHIBIT "A" DAILY COMMUNICATION INTELLIGENCE SUMMARIES)