First of all, I don't know much about it, so the following contents are for reference only. If there are similarities, it is purely coincidental.

I think the similarities among the three are all violent organs derived by rulers in order to consolidate their autocratic rule.

If there are differences, there should be many. get to work ...

First: the production time is different. European knights originated from the Frankish kingdom (present-day France, Germany and Italy) in the Middle Ages (/kloc-when Western Rome fell in the middle of the 5th century). Japanese samurai came into being in the middle of the ninth century; The children of the Eight Banners were founded by Nurhachi, so their appearance on the historical stage lags far behind that of knights and warriors.

Second, the function is different. Due to the different social, political, economic and cultural backgrounds, European knights maintained churches, nobles and their serfs. As for the samurai, it is absolutely loyal to the Lord, that is, the name; Of course, the Eight Banners maintained the rule of Manchu.

Third, the levels are different. Both European knights and the Eight Banners of the Qing army have a clear hierarchy. However, it seems that there are no samurai, only fighting for the master.

Fourthly, the differences in internal personnel composition and structure (well, I really can't think of any words to summarize) have to say that China people attach great importance to maintaining family relations. Most of the Eight Banners are Manchu. Of course, there are also some Han people and other ethnic groups, such as Lu, the wife of Nalan Xingde. Where do you think Man Han got married? The western chivalry system and the Japanese samurai system are all of the same ancestry, that is, the selection and distribution system is very strict.

Fifth, spiritual and cultural differences. Should be the most important. Knights and samurai have completely developed a cultural spirit. Do you have the Eight Banners? I don't know, maybe it has existed in the historical trend for too short a time. Chivalry is generally brave, loyal, chivalrous, with a strong sense of justice, and is a model of a gentleman. Samurai are generally absolutely loyal and martial, but they are also brutally endorsed (Lushun tragedy, etc.). No doubt told us this), but also the loss of the abdomen.

Sixth, the influence on later generations is different. Well, different people have different opinions.

The above is only a superficial analysis, but I still feel that some things are very macroscopic and can't be grasped.

Well, that's all I can think of for now. stop work for the day ...