In the 10th and 11th century there was the "Way of the Man-At-Arms" (Tsuwamon no michi), and the "Way of the Bow and Arrows" (Kyûsen / kyûya no Michi). At the time of the Genpei War (1180–1185), it was called ""Way of the Bow and the Horse"" (弓馬の道, kyūba no michi) because of the major importance of this style of combat for the warriors of the time, and because it was considered a traditional method, that of the oldest samurai heroes, such as Prince Shōtoku, Minamoto no Yorimitsu and Minamoto no Yoshiie (Hachimantarō). According to Louis Frédéric, the kyūba no michi appeared around the 10th century as a set of rules and unwritten customs that samurai were expected to comply. There was also ""Yumiya toru mi no narai"" (customs for those who draw the bow). This shows there was an emerging sense of ideal warrior behavior that evolved from daily training and warfare experience.