On this day, 93 years ago, on March 11, 1932 (February 5, 1932, the Communist International military adviser Li De arrived in the Central Soviet Area. On March 11, 1932, Li De, the military adviser of the Communist International, arrived in the Central Soviet Area. Reed, formerly known as Otto Braun, is a member of the German Communist Party. In his youth, he participated in the battle to create the Bavarian Soviet Republic and the workers 'uprisings in central Germany. Arrested in 1926. After escaping from prison in April 1928, he fled to the Soviet Union and studied at the Frunze Military Academy in Moscow. After graduation, he served as chief of staff of the Soviet Cavalry Division. The Communist International sent Li De to China because the Communist International believed that China would follow the same path as the Soviet Union, revolution would occur first in cities, and Li De had experience in street warfare. After Li De came to China, he gained the full trust of Bo Gu, the spokesperson of Wang Ming's line in China. Mao Zedong's guerrilla warfare ideas were rejected, and positional warfare gradually became the main combat method of the Red Army. Li De's failure in military command is considered to be an important reason for the failure of the fifth counter-encirclement and suppression campaign and the forced Long March of the Red Army.