Ninja History 101: Ninjutsu Weapons
Like the Green Berets, the ninja operated in small bands in which each man was a specialist in some form of ninjutsu training. They had such a huge assortment of ninja weapons they were expected to master that it was only natural that some men became more adept at specific ninjutsu weapons. Nonetheless, they were still expected to be proficient in all the ninja weapons in their arsenal. They were highly skilled in the use of standard weapons like the sword, spear, and bow and arrow, of course. But it was the array of specialized ninjutsu weapons that made them such feared fighters.