24 November 1941
Action: SPENAVO London
CNO advises as follows after studying special reports from CINCAF CINCPAC and Guam on the subject of my 222040;-you are at liberty to disclose the info to Vice Admiral Furstner and the British CNS. None of these special reports show any info supporting the Dutch report. Unquestionably activity in the mandates has increased both as regards warships and merchant types. A con-
1772 CONGRESSIONAL INVESTIGATION PEARL HARBOR ATTACK
siderable number of garrisons are being strengthened. CINC Fourth Fleet is in Saipan and some units of fleet plus merchant types are fairly well distributed throughout the mandates. Air force submarine and patrol craft activity is increasing but as a general proposition Japanese emphasis is chiefly on the Truk and Jaluit areas. The CNO does not believe that any large Japanese aggressive force is now prepared for any immediate move from the region under discussion but he is concerned over southward troop movements from Shanghai and Japan to Formosa and also apparent preparations in China Formosa and Indo China for an early aggressive movement of some character. There are no clear indications at present as to the direction or strength of such a movement and the situation should be carefully watched.
(PROCEEDINGS OF THE HART INQUIRY EXHIBIT NO. 79 DESPATCHES ON DUTCH ALERT )