OFFICE OF THE CHIEF OF MILITARY HISTORY
DEPARTMENT OF THE ARMY
This Monograph may not be reproduced without the permission of the Chief of Military History.
Department of the Army
Office of the Chief of Military History
Washington 25 D.C.
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TABLE OF CONTENTS
Foreword/Preface Page No. Shift of Emphasis in National Policy from Political To Military Strategy 1 Japan's National Defense Policy 1 Strengthening of Strategic Measures (First half of 1941) 4 Military Strategy Against China 4 Advocacy of the Malaya Invasion 6 Operational Policy Against the United States, Great Britain and the Netherlands East Indies 8 Study of Naval Operations Plan against the United States, Great Britain and the Netherlands East Indies 12 Transition of National Policy from Political Strategy to Military Strategy 13 Supreme Command's Proposal to the Government in Regard to the Transition from Peace to War (24 September 1941) 15 Acceleration of Navy's War Preparations 18 Preparations in Anticipation of Outbreak of War 20 Imperial Conference on 5 November 1941 to Form National Policy in Anticipation of War 24 Discussion on Proposals made at Imperial Conference of 5 November 28 Decision to go to War 33 Imperial Conference - 1 December 1941 34 Political Measures, Internal and External, Taken Following the Decision to Open Hostilities 41
Note to be sent to the United States and Time at which it was to be Delivered 42 Principles for Future Guidance of War 44 Principles for Administration of Southern Occupied Areas 49 Measures to be Taken Against Foreign Countries in the Event of War 52 Outline of measures to be taken toward Thailand, decided at the Liaison Conference of 23 November 1941 57 Measures to be taken by Manchukuo to cope with the sudden change in the international situation, decided at the Liaison Conference of 4 December, 1941 60 Treatment of the Netherlands, decided at the Liaison Conference of 4 December, 1941 61 Measures to be taken by China to cope with the sudden change in the international situation, decided at the Liaison Conference of 6 December, 1941 62 Measures toward the Soviet Union to be negotiated with Germany, decided at the Liaison Conference of 6 December, 1941 62 Imperial Rescript on Declaration of War 63 Commencement of Hostilities and Measures Taken Immediately Thereafter 65
Appendix No 1 Resources Necessary to be Mobilized for the Execution of War (Cabinet Planning Board. 29 July 1941) 71 Appendix No 2 Conclusions Reached After Study of "The Outline for the Execution of the Empire's National Policy," at the Liaison Conference from 23 to 30 October 1941 76
Appendix No 3 Testimony by Prime Minister Tojo before the International Military Tribunal for the Far East Relating to Japan's Decision to go to War 92 Appendix No 4 Testimony by Prime Minister Tojo before the International Military Tribunal for the Far East Senior Statesman's Conference held in the Presence of the Emperor on 29 November 1941 96 Appendix No 5 Memorandum Handed to the United States Government in Washington on 7 December 1941 103 Appendix No 6 Statement by Ambassador Nomura Regarding the Handing of the Ultimatum to the United States 114 Appendix No 7 Imperial Rescript on the Declaration of War 116 Appendix No 8 Testimony by Prime Minister Tojo before the International Military Tribunal for the Far East Relating to the Imperial Rescript on the Declaration of War 119