Communication Intelligence Summary, 27
General.-Traffic volume a little below normal due to poor signals on
the frequencies above 7000 kcs.
Tokyo-Takao circuit unreadable on mid-watch. Some tactical traffic intercepted from carriers. Bako, Sama, and
Saigon active as originators,
addressing traffic to each other and to the Chiefs of Staff of Second, Third Fleets and Combined Air Force.
Bako addressed the Chief of Staff Third
Fleet information Destroyer Squadrons Four
and Five and Chief of Staff Second Fleet. The main Tokyo originator today was the Intelligence activity who sent
five dispatches to the major commanders.
The Direction Finder activity was very high with all stations sending in bearings including the Marshall Islands
Stations which has been silent for the
past four days.
COMBINED FLEET.-No further information as to whether or not Destroyer Squadron Three is in Hainan area but is
believed to be still with Cruiser
Division Seven in that area. There is still no evidence of any further movement from the Kure-Sasebo area.
The Chief of Staff Combined Fleet
originated several messages of general address. He has been fairly inactive as an originator lately. CinC.
Second Fleet originated many messages
to Third Fleet, Combined Air Force and Bako.
THIRD FLEET.-Still holding extensive communication with Baka, Sama
South China Fleet and French Indo China
Force. The use of WE addresses is increasing,
those occurring today were:
"DAIHATIFUTABUTAISANBOTEU" (in Taihoku) "KOROKUKITISIKI"
care of RYUJO) "HEIZEUKAIGUNDAIGONREUSEU"
There is nothing to indicate any movement of the Third Fleet as yet.
FOURTH FLEET.-CinC. Fourth Fleet frequently addressed dispatches to the
defense forces in the Mandates. Jaluit
addressed messages to the Commander
Submarine Force and several submarine units. The Saipan Air Corps held communication with Jaluit and
CinC. Fourth Fleet. The Civil Engineering
Units at IMIEJI and ENIWETOK were heard from after being silent for weeks. Chitose Air Corps is in
Saipan and Air Squadron Twenty-four is
still operating in the Marshalls. No further information on the presence of Carrier Division Five in
AIR.-An air unit in the Takao area addressed a dispatch to the KORYU
and SHOKAKU. Carriers are still located
in home waters. No information of further
movement of any Combined Air Force units to Hainan.
SUBMARINES.-Commander Submarine Force still in Chichijima Area.
(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)