[151] Communication Intelligence Summary, 14 November 1941
 
General.-Traffic volume a little under normal due to poor to fair receiving conditions throughout the day. The Naval Ministry originated several AlNav dispatches. There were three WIWI messages originated today.
 1. UNIWIWI from N. G. S. and BUMIL to Chief of Staff Fourth Fleet information Chief of Staff Combined Fleet and YOKOSUKA.
 2. WIWI from N. G. S. and BUMIL to Chief of Staff Combined Fleet, Chief of Staff Third Fleet, YOKOSUKA and SASEBO. 3. UNIWIWI from N. G. S. to ANI758 (Chief of Staff of an unidentified unit), Information Chief of Staff Combined Fleet and Chief of Staff Combined Air Force.
Direction Finder Net active with SASEBO station sending in bearings in addition to the others. Tactical circuits heard during day with a fair amount of activity.
Combined Fleet.-Little activity noted. The flagship of BatDiv Three is still operating but no further information on this division. Two Combined Fleet units appear active in the traffic. They are DesRon Three (normally in First Fleet but has been operating with Second Fleet) and CruDiv Seven of Second Fleet. Both of these units have been associated in traffic with the South China Fleet and the French Indo China Force. They may proceed to the South China area in near future.
Third Fleet.-Still in Sasebo area. The CinC. has been addressed by Tokyo to a great extent and is still associated with South China activities in traffic. It has been noted that the association between the Third Fleet and units of the Combined Air Force is growing. Especially the Second Base Force has been talking with several Air Corps among whom is the Kure Air Corps. Will air units be embarked in ships of the Base Force?
Fourth Fleet.-No movement yet from the TRUK area. It appears that the Fourth Fleet Staff is fairly well split up. Various officers of the staff were addressed at Tokyo and at unidentified locations.
Submarines.-No particular activity. One unit evidently enroute PALAO and Submarine Squadron Two (now in Kure area) still being addressed by Tokyo and Yokosuka originators.
Air.-One Air Squadron of the Combined Air Force is at HOIHOW, HAINAN. The Commander of the Air Force is still at TAKAO with a good representation of his command. The Carriers remain in home waters with most of them in port.

 

(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)