三月事件
In March 1928, Tatekawa was promoted to major general and became the military liaison to the Embassy of Japan in Beijing. He was appointed head of the Second Bureau (Intelligence) of the General Staff in August 1929, where he was in position to provide information and assistance to then plotters of the March Incident who aimed at making Ugaki Prime Minister. 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.