US Military Intelligence Reports: Japan, 1918-1941 is a themed microfilm collection relating to US Military Intelligence Division (MID) in Japan, 1918- 1941. Included in the collection are microfilmed copies of US MID reports from the military attaché and his staff, and correspondence and telegrams between the military attaché, his staff, US Army Headquarters and the Japanese Imperial Army Headquarters, and US and foreign diplomats throughout the Far East. These documents have been arranged into eight sections: general conditions, political conditions, economic conditions, general conditions in Korea, army, field artillery, navy, and aviation. These sections are not mutually exclusive and all include a range of routine and special reports. Reports on domestic policy cover the rise of right wing, socialist, and communist organisations in Japan; the effects of the 1923 earthquake; Japanese industrial expansion, notably the securing of raw materials from neighbouring countries; the South Manchurian Railway Company; oil prospecting; and the iron and steel industries. Military and foreign policy reports concern the occupation of Korea, Siberia, Manchuria (Manchukuo), and the 1919 independence demonstrations in Korea. Specific military reports cover Japanese military tactics; military regulations; combat principles; training; organisation, the social attitude of officers; civil-military relations; aviation technology and statistics; the annual budgets of the Japanese War Ministry; naval building programmes; the scrapping of warships in accordance with the Washington Naval Treaty of 1922; naval operations in World War One; the use of air power against China; and the construction of offensive airfields in Indo-China.

The MAGIC Documents: Summaries and Transcripts of the Top-Secret Diplomatic Communications of Japan, 1938-1945, is a themed microfilm collection relating to US deciphers of Japanese diplomatic codes through the use of MAGIC decryption, 1938- 1945. The collection contains copies of deciphered official and unofficial Japanese diplomatic communiqués sent from Japanese personnel stationed at embassies and consulates in the Far East, Europe and the Middle East, to Tokyo, Japan, 1938-1945, and includes material relating to Japanese civil, political and economic conditions and policies, military expenditures, strategy, tactics, and campaigns, and eventual peace initiatives and surrender, 1938-1945. Included in the collection are deciphered messages concerning Japanese perceptions of Allied strategy against Japan; the effect of Allied air raids on Japan; Japanese relations with the German Foreign Office; Japanese relations with the governments of Burma, Indo-China; Korea, Netherland East Indies, Siam, China, the Philippines; perceptions of Allied chemical warfare capabilities; perceptions of Allied Lend-Lease naval forces and strategy; British and French relations with colonies in the Far East; control of industry in Manchuria (Manchukuo); perceptions of Axis strategy and Japan's role within it; Japanese interest in Indian nationalism and the Indian Independence League; the Burma-Siam railway; Japanese attacks on the Burma Road, the supply route which connected Burma to Generalissimo Chiang Kai- Shek's nationalist forces in China; administration of the government of Japanese occupied Nanking, China; the Chinese Communist Party; the rationing of clothing and food in Japan; perceptions of the Soviet Comintern Pact; Japanese relations with German, European, and Chinese banks; Japanese relations with Spanish Gen Francisco Franco Bahamonde, the German High Command and Italian Prime Minister Benito Mussolini; interpretation of the Greater East Asia Co-Prosperity Sphere; concern for Japanese nationals abroad, 1937-1945; Japanese naval strategy and tactics; function of the Japanese Consular Police, China; territorial claims on the Kurile Islands; material relating to Japanese military campaigns during World War Two; Japan's search for strategic resources in the Far East; military strengths and dispositions of the German Armed Forces; the origins of the Russo-Japanese Neutrality Pact; Allied and Axis propaganda methods; the treatment of Allied prisoners of war; the surrender of Japanese armed forces in the Far East.

Papers created or collected by Maj Gen Sir Thompson Capper during the course of his military career, [1896-1914], dated [1888], [1896], [1900]-1902, 1905, 1907-[1914] , principally comprising papers relating to his work at Staff College, Quetta, [1908]-1911; printed pamphlets and notes on operations in Manchuria during the Russo-Japanese War, 1904-1905, dated [1908-1914]; printed pamphlet and notes relating to operations against Dervish rebels in British Somaliland in 1913, dated [1913]; papers relating to his service with 13 Infantry Bde, notably including printed training instructions, 1907 and 1909, and his circular to officers of 3 Infantry Bde summarising the official report on army manoeuvres, Dublin, 1910. Three printed books, 1888, 1902 and 1908, comprising books on Napoleon I (Napoleon Bonaparte) and the Franco-Prussian War of 1870-1871 and The Second Afghan War (John Murray, London, 1908), an official account produced in the Intelligence Branch, Army HQ, India, annotated by Capper.