Gensui (Imperial Japanese Army)
Rikugun-gensui (陸軍元帥, Field marshal), formal rank designations: Gensui-rikugun-taishō (元帥陸軍大将, Marshal-general) was the highest title in the pre-war Imperial Japanese military. The title originated from the Chinese title yuanshuai (元帥).
Source: Wikipedia — Gensui (Imperial Japanese Army) (CC BY-SA 4.0)