In addition, he held an instructor's license in Shintō Musō-ryū[1] and a Menkyo kaiden in Shindō Munen-ryū making him the 7th sōke of that system.

Nakayama also taught kendo and Iaido to Gigō Funakoshi, third son of Shotokan karate founder Gichin Funakoshi, who gave his father's karate a more Japanese flavour by adding kendo and Iaido based training exercises and technical improvements based on his swordsmanship training.

By the mid-1920s, Nakayama was one of the most famous swordsmen in Japan, and as such, he was made a leader of the committee that drew up the sword curriculum for the Toyama Military Academy.

In the same manner in which the Yogis developed their physical inhibition to attain meditative states for higher psychical conditions, kendo trains the nervous system to respond, making awkward conscious efforts into reflex.

For example, on July 10, 1934, Nakayama publicly demonstrated the strength of New Swords by using one to cut an iron bar about the thickness of a man's finger.

[5] At the end of World War II, Nakayama was quick to advise Japanese people to greet Allied troops with grace, saying samurai never mouthed what was finished.

If we cannot think of them as being no longer enemies, then it cannot be said that we truly understand the spirit of bushido.If there is the least feeling of ill-will harbored in our hearts and if we cannot take a broad outlook, it is bound to show in our faces and attitude, giving reason for others to think of us as cowardly.