 After he was transferred to the First Bureau (Operations) in August 1931, he provided information and aid to Kingoro Hashimoto and Isamu Chō in the abortive coup d'état known as the October incident.Tatekawa was dispatched by Army Minister Jirō Minami to Manchuria for the specific purpose of curbing the insubordination and militarist behavior of the Kwantung Army.There was a growing concern by both military and civilian leaders in Tokyo that the Kwantung Army would take unauthorized action to provoke an incident leading to war with China.