Ninjutsu

Ninjutsu is the art of Japan's ninja warriors. It grew during the nations feudal period (13th to 17th century), when missions of espionage and assassination were often carried out against warlords. In the 1970s and '80s, ninjutsu was popularized in the West by Ronald Duncan, Stephen K. Hayes and Masaaki Hatsumi.

Although ninjutsu includes linear and circular empty-hand techniques (often called taijutsu, which encompasses punching, kicking and grappling), much of the art's techniques involve weapons such as the sword, dagger, dart, weighted chain and throwing star. Historically, ninja were masters of camouflage, concealment, horsemanship, explosives and poisons, but such skills receive little, if any, emphasis in modern training.