Introducing the principles of Bushido. Yamamoto was a member of the Nabeshima clan and lived during the Shogunate Rule, which was a time of peace in Japan. After serving Lord Mitushige Nabeshima for many years, he retired to the mountains and had his close friend Tsuramoto Tashiro write down his teachings. Hagakure eventually became the foundation for Bushido and during the time it was written, Yamamoto felt samurai were neglecting their military practices. I suggest it be read as the important document it is, without praise or condemnation.
Bushido: The Ancient Code of the Samurai Warrior
Code Of Bushido | Kards - The WWII CCG Wiki | Fandom
Bushido was the code of conduct for Japan's warrior classes from perhaps as early as the eighth century through modern times. The word "bushido" comes from the Japanese roots "bushi" meaning "warrior," and "do" meaning "path" or "way. Bushido was followed by Japan's samurai warriors and their precursors in feudal Japan, as well as much of central and east Asia. The principles of bushido emphasized honor, courage, skill in the martial arts, and loyalty to a warrior's master daimyo above all else. It is somewhat similar to the ideas of chivalry that knights followed in feudal Europe. There is just as much folklore that exemplifies bushido—such as the 47 Ronin of Japanese legend—as there is European folklore about knights. A more elaborate list of the virtues encoded in bushido includes frugality, righteousness, courage, benevolence, respect, sincerity, honor, loyalty, and self-control.
Samurai and Bushido
The characters never talk about the code of bushido here, but it's a vital part of the story, both in how it shows up and in how it's broken. It's similar to the code of chivalry, dictating the behavior of knights and European noblemen, only it's got that Land of the Rising Sun vibe that makes it unique to Japanese culture. It formally arose in the Edo period of Japanese history, in the early 17th Century after the events that take place here. But it existed long before then in a more informal form and Kurosawa definitely had it in mind when he made this movie. With Japan defeated in World War II and learning how to move past that, it was probably on a lot of Japanese citizens' minds as well.
As servants of the daimyos, or great lords, the samurai backed up the authority of the shogun and gave him power over the mikado emperor. The samurai would dominate Japanese government and society until the Meiji Restoration of led to the abolition of the feudal system. Despite being deprived of their traditional privileges, many of the samurai would enter the elite ranks of politics and industry in modern Japan.