Communication Intelligence Summary, 25
General.-Traffic volume normal. Receiving conditions much improved over
last two days. Tokyo personnel bureau
active with messages to various units.
Tokyo originated one UNI WIWI to CinC. Combined Fleet, CinC. Second Fleet CinC. Third Fleet, CinC. Fourth
Fleet and CinC. French, Indo China
Force plus Yokosuka, Kure and Maizuru. The Navy Minister originated several AlNavs. A Direction Finder
Net, controlled by Tokyo radio was
active with secret calls being sent by the five stations. The entire fleet traffic level is still high
which leads to the conclusion that
organizational arrangements or other preparations are not yet complete.
Combined Fleet.-Little activity by CinC. First Fleet. CinC. Second
Fleet remains highly active as an
originator, addressing Third Fleet, Air Forces and South China units. A Second Fleet unit and a submarine division or squadron arrived in Takao
communication zone today. Crudivision
Seven which previously arrived there has been associated with Destroyer Squadron Three which indicates
the presence of that unit in Takao
vicinity. Palao and Second Fleet still exchanging messages. Two new units to be associated with CinC Second
Fleet and the Task Force now forming
are the North China Fleet and Defense Division One.
Air.-Through the identification of a call made today Genzan Air Corps has been in Saigon since the eighteenth. We
believe that other units of the
Combined Air Force have moved from Taiwan to the French Indo China Area although this is not yet verified. One
or more of the Carrier Divisions are
present in the Mandates.
Fourth Fleet.-CinC. Fourth Fleet is still holding extensive communications with the Commander Submarine
Fleet, the forces at Jaluit and
Commander Carriers. His other communications are with the Third, Fourth and Fifth Base Forces.
(FROM: U.S. CONGRESS JOINT COMMITTEE ON PEARL
HARBOR ATTACK HEARINGS; PT. 35, THE
CLAUSEN INVESTIGATION, PP. 62-81. EXHIBIT "A" DAILY COMMUNICATION