Heikegani has a shell that is believed to resemble an angry samurai's face.
 Tanegashimaemployed en masse, largely by ashigaru peasant foot troopswere responsible for a change in military tactics that eventually led to establishment of the Tokugawa shogunate and an end to civil war
 This new armor, which used itazane, was referred to as tosei-gusoku (gusoku), or modern armor

