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).
While gensui would retain their actual ranks of general or admiral, they were entitled to wear an additional enamelled breast badge, depicting paulownia leaves between crossed army colors and a naval ensign under the Imperial Seal of Japan. They were also entitled to wear a special samurai sword (katana) of a modern design on ceremonial occasions.
In the Meiji period, the title was awarded to five generals and three admirals. In the Taishō period it was awarded to six generals and six admirals, and in the Shōwa period it was awarded to six generals and four admirals. The higher title of dai-gensui was comparable to the title of generalissimo and was held only by the Emperor himself.
List of Rikugun-gensui
Note that several were promoted the same year they died; these were posthumous promotions.