was a lieutenant general in the Imperial Japanese Army, propagandist of a Jewish conspiracy theory during and after World War II and a legislator in the Diet of Japan. Biography Military career Shiōden was born to an ex-samurai of Maebashi Domain (present day Gunma Prefecture), but was adopted as a child by Shiōden Masaaki, an ex-samurai from Kawagoe Domain. He graduated from the 11th class of the Imperial Japanese Army Academy in November 1899, and was commissioned as a second lieutenant in the Guards Engineering Battalion. He was sent as a military engineer to the Japanese garrison force in the Chinese Empire, and served there during the Russo-Japanese War. Afterwards, he served in a number of administrative and staff positions within the Imperial Japanese Army General Staff. He graduated from the 21st class of the Army Staff College in 1909. he then served as a military engineer in the Kwantung Leased Territory, instructor at the Army Artillery School and was sent to France as a military attaché and official Japanese military observer during World War I. While in Paris, he was exposed to the common theory that an international Jewish conspiracy was behind the war, thereafter he began to research into issues related to Freemasonry, and the so-called “Jewish-problem”, as a result of which he became a fervent anti-Semite and leading voice of anti-Semitic propaganda in Japan. In January 1920, he was assigned to the Vladivostok garrison during the Japanese Siberian intervention as afterwards commander of the Harbin Special Operations Office. This office was responsible for intelligence activities, counter-espionage, and analysis of political and military information about the USSR. Harbin was home to a large population of Russians, including many Jews. A strong supporter of military aviation from his first-hand experiences in World War I, Shiōden returned to Japan in 1922 to assume command of the Army Aviation School. He later served on the Military Aviation Bureau within the General Staff. In 1924, he was promoted to major general. He subsequently served as Japanese Army delegate to the League of Nations, commander of Hōyo Fortress and on the staff of the IJA 16th Division and IJA 3rd Division. In August 1929 he was promoted to lieutenant general, and went into the reserves immediately thereafter. Political career After his retirement, Shiōden served in the largely honorary post as Chairman of the Imperial Aviation Association, which promoted the development of Japanese military