What does the Japanese mantra "Bagaya Road" mean, and why does the Japanese army often talk about it?

We can often see some bad things about Japanese devils in some movies and TV plays in War of Resistance against Japanese Aggression. When they treat China people, they don't treat them as human beings at that time. They have done some bad things. When they speak, they have a very obvious feature, that is, they are fierce. If others dare to talk back or resist him, he will stare at each other and say "Baga Lu Ya". So what does this mean? Why does the Japanese army often talk about it?

When many people watch such a Japanese drama, the subtitles at that time are usually translated into the meaning of jerk, and this sentence is usually accompanied by a very angry expression to show that the Japanese are very dissatisfied with this matter, and the tone is heavy and the speech speed is fast, so that our audience can see that the Japanese are really angry, and these four words are often the words they say the most, whether the protagonist or some ordinary Japanese soldiers are playing supporting roles.

In fact, there is other meaning in the Japanese context. In the daily life of ordinary people in Japan, sometimes they say these words, not only to their enemies, but also to their children at home and colleagues in the company. For example, when they gossip about their children at home, he means that the child is too naughty and a troublemaker, which is what naughty boys mean. Therefore, if we put it in this context, we can understand the word Baga. He has a little blame, but there is also a kind of spoil, a helpless tone of hating iron and not turning into steel, which is not the very angry meaning we see in TV dramas.

Therefore, the same sentence will have different meanings when said in different environments. This requires us to carefully distinguish the context in which this sentence was said.