Shidoshi Frank Dux, the "manuscript" The history of ninjutsu and ninja ...

Shidoshi Frank W Dux explains about his manuscript, "the complete history of the ninja, ninja the untold story" he feels that he finally had the chance through this manuscript to tell the world the history of his Koga Yamabushi Ryu Ninjutsu and that is is rooted in the Japanese Yagyu Shinkage Ryu school of the Samurai. Ninja is a 1600 hundred term, later the ninja was also called "rappa", "suppa" and "kampai tai"