Intelligence Summary, 13 November 1941.
General.-Traffic volume normal with receiving conditions good. Several messages
of high precedence intercepted, some of them are:
1. UNIWIWI dispatch in five numeral
from TOKYO Intelligence to Chief of Staff Combined-Air Force, INFO RNO TAIHOKU,
BAKO Naval Station.
2. WIWI from N. G. S. to MAIZURU INFO Chief of Staff Fourth Fleet.
3. NIKAWIWI from N. G. S. to Commander in Chief Combined Fleet INFO Commander
in Chief South China Fleet, Commander Third Fleet and SAMA, HAINAN.
4. UNIWIWI from N. G. S. to Secretary First Fleet.
5. (2 messages) WIWI to same address as 3 above.
6. A 3 part NIKAWIWI from N. G. S. to Commander in Chief Combined Fleet,
INFO Commander in Chief French Indo China Fleet.
7. One UNI message from Commander in Chief China Fleet to SAMA, INFO Commander
in Chief Third Fleet and Commander in Chief Combined Fleet.
This is the only occurrence in some time of anyone save the TOKYO intelligence
activity using the WIWI prefix. Both TOKYO and the China Fleet Intelligence Bureau
were active all day with dispatches to the Major Commanders.
The direction finder net was again active all day with CHINKAI, ORU 7 (near
CHINKAI), JALUIT, SAIPAN, and TAIWAN sending in bearing reports.
Combined Fleet.-The activity of BATDIV 3 is not clear. The flagship is operating
and was located by D. F. as reported yesterday. The Commander of BATDIV 3 is located
in YOKOSUKA. The Division Communication Officer is communicating with TRUK, SAIPAN
and PALAO. The other ships in this division remain unlocated but it is assumed,
lacking evidence to the contrary, that they are with the flagship. Other units of
First Fleet seem inactive. One Cruiser Division of Second Fleet is associated in
traffic with PALAO and may be in that area.
Third Fleet.-Still located in SASEBO, the Commander in Chief has been active
in the traffic, being addressed by both TOKYO and Commander in Chief Combined Fleet.
The First BASE FORCE Commander originated several messages but no indication of
change of location.
Fourth Fleet.-The Commander in Chief Fourth Fleet is in communication with
he Sixth BASEFORCE JALUIT. Several message were exchanged. He appears o be preparing
for a move from TRUK but no movement has yet occurred. SUBRON 2 is again in communication
with JALUIT and today originated a movement report, but no indication of direction.
remain relatively inactive. The SETTSU is still with them and a few may be engaged
in target practice near KURE. The Combined AIRFORCE is still mostly located in TAIWAN
and the usual high traffic level between its component Air Corps still exists.
China.-The Commander in Chief China Fleet was addressed in one of the RNO
TAIHOKU. His Chief of Staff is still in SHANGHAI.
(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)