Klamm Steven. Ninja and Ninjutsu - The Stealth Techniques of the Japanese Martial Art of Espionage and Invisibility

Publishing House, 2013. — 24 p. — ASIN B00B8AA2FONinjutsu (known in English as the "techniques of stealth" or the "arts of invisibility") is the Japanese martial art of espionage. Practitioners are trained primarily to infiltrate enemy territory to find out about and report on troops, artillery, provisions and fortifications. The scope of training was eventually expanded to include a means of actively altering the course of battles, including arson, assassination and seizure and/or destruction of weapons and supplies.Although practitioners are popularly referred to as "ninjas", the following terms are also used to collectively describe them: shinobi (spy), onmitsu (secret agent), rappa (wild wave), suppa (transparent wave), toppa (attacking wave), kasa (grass), monomi (seer of things) and nokizaru (monkey under the eaves).