What are the Japanese self defence systems?
The Samurai were Japan's elite fighting forces, and they wore
armor and had several specialized weapons. Sometimes, however, they
might lose their weapons during the course of combat. For this
reason they were highly proficient at the unarmed Japanese martial
art of Jujitsu (Jujutsu). It is thought, however, that Jujitsu had
it's roots in China and Tibet.