Communication Intelligence Summary, 3
General.-Traffic volume normal with receiving conditions good. Present state of call recovery does not permit much
detailed information to be obtained.
The extensive use of alternate calls by the major commands slows up identification of even these Units.
Very few units have been positively
identified so far. The Chief of the Naval General Staff originated three long dispatches to the CINC
COMBINED, SECOND and THIRD FLEETS. The
Tokyo Intelligence originated nine dispatches to the same addresses.
The presence of the CINC SECOND FLEET in Taiwan waters is not revealed by radio traffic. In some traffic from Takao
the CINC SECOND FLEET is indicated as
having previously received the messages while in others to Tokyo he is indicated for delivery by that
station. It is the impression that both
SECOND and THIRD FLEETS are underway but are not verified by Radio Intelligence means.
There are some FOURTH FLEET Units in the Marshall Islands area
including some of the FOURTH FLEET
Staff. The identity of these units is not known. The SIXTH BASE FORCE at Jaluit addressed several messages
to CINC FOURTH.
Some Swatow Units were addressed at Saigon today indicating a movement of some South China Units to Saigon. Bako
originated many dispatches to the RNO Taihoku
and the Task Force Commander.
No information on submarines or Carriers.
U.S. CONGRESS JOINT COMMITTEE ON PEARL HARBOR ATTACK HEARINGS; PT. 35, THE CLAUSEN INVESTIGATION, PP. 62-81.
EXHIBIT "A" DAILY COMMUNICATION INTELLIGENCE SUMMARIES)