The American army was so powerful during World War II, why did the Japanese attack on Pearl Harbor succeed?

Some people say it was a mistake, and some people hold American conspiracy theories. It's hard to say what the facts are. Let's wait for the CIA to decrypt the documents.

~ The following is a view transferred from Zhihu ~

It is ridiculous to say that the aircraft carrier was not in Pearl Harbor when the Pearl Harbor incident occurred, so as to prove that Pearl Harbor is a conspiracy theory.

It is common sense that aircraft carriers are more powerful and important than battleships.

It is true that the aircraft carrier is the future development direction, but the problem is that people didn't know it at that time. Because from Nelson's sail battleship to Jutland naval battle, battleship has always been the most powerful main force in naval battle. At that time, only a few people saw that the aircraft carrier had great prospects. Before World War II, the United States, the aircraft carrier party and the warship party were still in a state of endless debate. Even the battleship party has great advantages.

Therefore, from 65438 to 0936 to 40 years, the United States approved the construction plans of two North Carolina-class, four South Dakota-class and six Iowa-class battleships. Of the above 12 battleships, 10 was started before Pearl Harbor.

And how many aircraft carriers were newly started before Pearl Harbor? One bumblebee, five Essex class. The number of aircraft carriers started is only half of that of battleships, and the total tonnage is less than one-third of that of 12 battleships. Does this attach importance to aircraft carriers? Who was the first main force in the eyes of the US Navy at that time?

If the Pearl Harbor incident is really a bitter pill, then it is not the warship but the aircraft carrier that should be sacrificed.

It was not until the Pearl Harbor incident and the Coral Sea naval battle that the United States was hurt again and again that it suddenly realized that it would speed up the aircraft carrier construction plan and postpone and stop the construction of unfinished battleships. However, in the early days of the Pacific War, the US Navy faced the dilemma that the number and tonnage of aircraft carriers were not as good as those of Japan. Until 65438+February 3 1, 42 years later, after struggling for a year, the US Navy ushered in the first newly built fleet carrier Essex after Bumblebee. By this time, they had lost four aircraft carriers, Lexington, York City, Bumblebee and Hornet. In the Pacific Ocean, only two aircraft carriers, Saratoga and Enterprise, can be used. This is a painful price they paid for not paying enough attention to the development of aircraft carriers.

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Besides, Chi Buzhou's deeds currently circulated mainly come from wuyue's "Chi Buzhou, the ace agent of Chiang Kai-shek's secret code decoding genius". The Pearl Harbor incident and Isoroku Yamamoto's murder, which he participated in, were neither supported by the data of the Kuomintang C.O. at that time, nor supported by the evidence of the United States and Japan. In other words, orphans.

Let's assume that he predicted Pearl Harbor is true, so what did he do at that time?

Chi Buzhou was only 30 years old at work and had no experience. However, through statistics, he found that the Japanese secret letters he received were basically a mixture of English letters, numbers and Japanese, and the characters were closely related, mostly (MY, HL, GI…… ............). Chi Buzhou further found that there were just ten such English double-word groups, which probably represented 10 numbers from 0 to 9. Based on this discovery, Chi Buzhou made a bold guess: he designated MY with the highest frequency and GI with the lowest frequency as "1" and "9" respectively. In addition, the figures in Japanese cables are likely to indicate the strength of the warring forces and the number of soldiers at that time. So Chi Buzhou went to the army to check and found more and more breakthroughs.

In addition, he combined many code words, such as "west wind is tight" indicating tension with the United States, "sunny in the north" indicating relaxation with the Soviet Union, and "rainy in the southeast" indicating tension on the battlefield in China ... Finally, he deciphered the secret information sent by the Japanese military headquarters.

The book claims that he cracked the secret telegram sent by the Japanese army headquarters, but the password mentioned in it can't even be called a password, just an upgraded version of the crossword puzzle in the previous newspaper. Military encryption will not be replaced by this simple method, and the lowest military password will at least get a dynamic correspondence.

The purple code used by the Japanese navy at that time was an improved version of Enigma. This is an advanced mechanical password, which is characterized by changing the password every time. You need to copy the cipher machine or know the principle of the cipher machine first, then crack the cipher key every time, and then crack the password with the cipher key combined with the cipher machine. Chi Buzhou's style is no different from playing house with children before the purple password.

Before the Battle of Midway, office of naval intelligence was able to crack the purple code. First of all, it has a similar cipher machine, and the British gave it to Enigma. Secondly, there must be huge manpower and material resources, such as mechanical computers or hundreds of actuaries, because the workload of calculation is very large. In this way, it can be guaranteed that the message can be decoded 2 ~ 3 days after receiving the telegram. This is how the intelligence war victory of Midway naval battle came about.

For China at that time, all this was a fable. Because China has neither Enigma nor mechanical computers, nor so many actuaries.

On the other hand, Japan's diplomatic code is not difficult, and it was deciphered by the American black room in the 1920s. The most famous example is that during the naval negotiations in Washington, the bottom line of Japan's negotiations was completely controlled by the United States.

From 1938 to 1940, jared, the founder of the American black room, was invited by the national government to set up the China black room, the technical room of the military commission, to train the national government's code breakers. It is very possible for Chi Buzhou to decipher the Japanese diplomatic code.

19411On February 3, Chi Buzhou deciphered a special secret message sent by the Japanese Ministry of Foreign Affairs to Nomura, the ambassador to the United States:

1 burned all confidential documents immediately;

2. As far as possible, notify relevant depositors to transfer their deposits to neutral national banks;

The imperial government decided to take decisive action.

According to the situation at that time, Chi Buzhou judged that this was a harbinger of "East Wind, Rain" (Japan-US War). Chi Buzhou made two estimates based on the Japanese translated information about the naval base in Honolulu, USA: first, the war started on Sunday; 2. Location: Pearl Harbor Naval Base, Honolulu.

Collecting local military information is something that embassies and consulates often do. At that time, the tension between Japan and the United States was not news. Chi Buzhou has never cracked Japan's military code, only a low-level diplomatic code. The content of this time is only to instruct the Japanese embassy abroad to prepare for the war.

Most importantly, the original work doesn't explain how he inferred from the diplomatic telegram that the attack was on Sunday, and it was Pearl Harbor instead of the Philippines.

Roosevelt can receive dozens of such eloquent materials without sufficient evidence. Which do you want him to believe?

Finally, I'll tell you a little joke. The other side, a documentary about War of Resistance against Japanese Aggression, is full of blood and mountains, which greatly praises the work of the intelligence department of the national army. An example is that Chiang Kai-shek learned the news of Japan's surrender a few hours earlier than Roosevelt, which is very humiliating.

The problem, however, is that Roosevelt died four months before Japan surrendered. . .

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