A mercenary in feudal Japan trained in martial arts
Original ninjas
, or Shinobi, were spies, mercenaries, or assassins, and they were ... Ninjutsu 
training adapts the techniques once employed by feudal spies to the fitness and... [DOC] [TLE] Summary Martial Arts, Fighting Styles, Combative Sports | eBay [PAR] Ninjitsu is a Japanese martial art that emphasizes stealth in movement and 
camouflage.