He was an officer of the Japanese Self - Defence Air Force .
He has 7th dan of Jukendo ( Japanese style bayonet fighting ) and 7th dan of Tankendo ( Japanese style short sword fighting : the short sword is a detached bayonet from the rifle ) .
Since he was an officer of the Japanese Self - Defence Air Force , he has 7th dan of Jukendo ( Japanese style bayonet fighting ) and 7th dan of Tankendo ( Japanese style short sword fighting : the short sword is a detached bayonet from the rifle ) .