Sun Yat-sen briefly took a title of what Chinese military ranking?
Taewonsu Taewŏnsu (literally grand marshal, usually translated as "generalissimo") is the highest possible military rank of North Korea and is intended to be an honorific title for Kim Il-sung and Kim Jong-il. The rank is senior to that of "wonsu" (marshal). The title also exists in Chinese military history as "dàyuánshuài" (same Sino-Korean characters 大元帥), and was briefly taken by Sun Yat-Sen.
Sun He (Zixiao) Sun He (224–253), courtesy name Zixiao, was a prince of the state of Eastern Wu in the Three Kingdoms period. He was a son of Sun Quan, the founding emperor of Wu. In 241, he became the crown prince after the death of his eldest brother, Sun Deng, the first heir apparent to Sun Quan. In the 240s, a power struggle broke out between Sun He and his younger brother, Sun Ba (the Prince of Lu), with both of them fighting for the succession to their father's throne. The conflict ended in 250 when Sun Quan forced Sun Ba to commit suicide, deposed Sun He from his position as the crown prince and replaced him with Sun Liang (Sun Quan's youngest son). Three years after his downfall, Sun He was demoted from the status of a prince to a commoner and was forced to commit suicide. In 264, Sun He's eldest son, Sun Hao, became the Wu emperor and he granted his father the posthumous title "Emperor Wen".