Japan s surprise attack on Pearl Harbor during World War II was known to Germany.

Germany didn't know that at that time. Japan had already planned to attack the United States, and Germany knew about it, but all along, Germany had been vigorously opposed to Japan's attack on the United States, because the United States' participation in the war at that time was likely to directly reverse the situation of the war that was originally biased in their favor, and moreover, Japan at that time did not conquer China within a month as it had planned, and the war situation in East Asia was still unclear, and if the United States got involved, it would inevitably suffer from the enemy, so Germany has always opposed Japan's sneak attack on the United States in this regard. However, the Japanese emperor at that time seemed to have seen the defeat of the war and lost confidence in the war, so with their national character, they had to fight to the death.

As a result, the war was planned, and Japan had deliberately concealed its disclosure to Germany, so Germany still did not know about it.

The plan before the sneak attack must have been kept secret, and it was impossible for Germany to know it from regular sources, at most it was wiretapping telegrams, etc.

The U.S. military was attacked by surprise, so it means that even the U.S. troops at Pearl Harbor did not know about this plan.

However, after the successful sneak attack, it immediately appeared on the front page of the major newspapers in various countries, because this is a very important event, the United States has been attacked by a foreign country for the first time in history since the founding of the country, although it is not homegrown, but it has shocked the whole United States.

Therefore, it is impossible for Germany, as one of the major belligerent countries, not to know that the United States has been attacked, not to mention that they were also closely following the movements of the United States at that time, because the United States had not entered the war before that.

Of course not.

When Churchill found out, he happily said, "It was the restiest sleep I had, because the United States had declared its entry into the war."

When the Führer found out, he directly scolded Japan.

Because a sneak attack directly disrupted the Führer's world strategy.

In '39, the Führer ordered all submarines and ships not to attack American ships, in order to prevent the United States from finding any excuse to enter the war.

The Great War. There's nothing I don't know, it's just that ...... participated

Japan's attack on Pearl Harbor is also known as the "Pearl Harbor Incident", which refers to a military incident planned by Japan during World War II to attack Pearl Harbor, the base of the U.S. Pacific Navy, which directly led to the outbreak of the Pacific War.

The mastermind of the Japanese surprise attack on Pearl Harbor is named Isoroku Yamamoto, a Japanese admiral who has written "The Theory of Winning by Aviation," but Yamamoto Isoroku has very mixed feelings about the surprise attack on Pearl Harbor.

In fact, long before the outbreak of World War II, the Japanese Navy had already regarded the United States as an imaginary enemy, and at that time, the September 18 Incident had just ended, and the Japanese Army believed that it should regard the Soviet Union as an imaginary enemy and gather heavy troops in the Manchurian and Mongolian regions to guard against the Soviet Union, while the Japanese Navy believed that it should go south to the Pacific Ocean and take the United States as an imaginary enemy to fully control the resource-rich Southeast Asia and the Pacific region.

As the Japanese army and navy quarreled with each other, and through the mediation of the Japanese cabinet, Japan finally decided to list the Soviet Union and the United States as imaginary enemies and to actively prepare for war in both directions.

Because Japan is a small island country, the ever-expanding scale of the war has increased Japan's demand for various strategic resources, and Japan's main importer of these strategic materials is the United States.

At the beginning of World War II, the United States began to gradually tighten its resource exports to Japan, and Japan brazenly invaded Southeast Asia in order to obtain strategic resources, especially oil.

At that time, Southeast Asia belonged to the sphere of influence of the European and American powers, and Japan's invasion of Southeast Asia caused a complete turn between Japan and the United States, and the United States began to completely ban the export of strategic materials to Japan, directly choking the throat of the Japanese army.

After the cabinet of Hideki Tojo came to power, Japan became even more crazy, in order to remove the threat of the United States, so the plan to bomb Pearl Harbor was proposed, although this plan just came out and caused a fierce debate, but Japan has not had much choice after being completely cut off from oil.

Therefore, Japan's surprise attack on Pearl Harbor was a strategic plan that had been prepared for a long time but was affected by unexpected factors.

<> "The Reasons for Japan's Surprise Attack on Pearl Harbor in World War II."

Was it stupid for Japan to attack Pearl Harbor? In fact, the old Japanese empire had no other choice. The United States imposed an economic blockade and an oil embargo on Japan, forcing Japan to go to war.

Japan only has two years of oil reserves, and must do everything possible to obtain energy, otherwise it will only be powerless to resist or simply surrender. It is also impossible to comply with the conditions of the United States as an acre country, because the withdrawal of troops from China, Indochina and other places will undoubtedly lead to geopolitical instability. Japan needs to formulate a sustainable energy policy, accelerate research and development of energy technologies, reduce dependence on imported oil, and ensure national energy security.

The Japanese are reluctant to admit defeat, but they cannot do without oil. At that time, the large Siberian oil fields of the USSR had not yet been discovered, and there was no breakthrough until the 60s. Japan's only oil** is Sakhalin oil from the Soviet Union, but Sakhalin's production is very limited and cannot meet Japan's needs.

Japan can only obtain oil through the South Seas, but this will require defeating countries such as the United Kingdom, the Netherlands, and the United States, which is a difficult problem for Japan. The inhabitants of the Nanyang region were mostly disadvantaged, and the cruel treatment of them by Japan provoked fierce resistance. Thus, the invasion of the South Seas and the acquisition of oil plunged Japan into a diplomatic and economic crisis.

In the end, Japan was defeated in the Pacific War and all its colonies in Nanyang were lost, leaving deep historical scars on the people of Nanyang.

It can only attack the South Seas and attack the American, British, French, and Dutch colonies. First of all, it is necessary to bravely stand up to the United States and risk going to war. The Japanese Navy believes that in order to defeat a strong enemy like the United States, it must adopt the method of forcing the other side to engage in a decisive battle as soon as possible.

Sugiyama said: As time goes by, the comparison of armaments between Japan and the United States will become more and more unfavorable to us. At the same time, he said that he was full of confidence that he would be able to win the war in the early stages.

And Marshal Sugiyama said: "Nevertheless, we still have to face the reality of fighting a long war. Even so, he believed that Japan could "establish its own impregnable strategic zone and defeat the enemy."

On November 26, 1941, the United States again sent an ultimatum to Japan, stating that Japan "withdraw all land, sea, air, and police forces from China (including Northeast China) and Indochina" and, in effect, absolve the Triple Alliance Treaty.

At the same time, the United States also pointed out the economic benefits that Japan would receive if it accepted the plan: Japanese assets would be unfrozen; On the basis of mutual most-favored-nation treatment, the ** agreement was signed to stabilize the exchange rate between the United States and the yen; and other large concessions economically, and so on.

The telegram was sent to Japan, and when the telegram arrived, the Japanese Imperial Council was adjourned, and everyone was having lunch. Tojo read the telegram aloud, and there was a dead silence. It was at this time that Japan made up its mind to go to war, and it was on November 26, after receiving an ultimatum, that the Japanese Combined Fleet sailed out of port and targeted Pearl Harbor.

During World War II, why did Japan attack Pearl Harbor?

During World War II, Pearl Harbor was a very important economic and military strategic location for the United States in the middle of the Pacific Ocean at that time, and the United States controlled most of Southeast Asia and the Pacific Ocean through Pearl Harbor, and was the main transit point used to plunder Southeast Asia's resources, so that Japan could not obtain some resources, blocking Japan's road to energy and Japan's development space. For Japan at that time, the east was already at war with China, and, at that time, Japan did not find the materials he urgently needed in China, such as oil and rubber and other materials and energy, and went north to war with the Soviet Union at that time, but unfortunately Japan's tanks were defeated by Soviet tanks, and the whole north attacked the Soviet Union, which was made by the Soviet Union, which became a big joke, so Japan could only develop to the south, at that time Japan had a relatively strong aircraft carrier fleet, and aircraft carriers and carrier-based aircraft on aircraft carriers were more advanced in technology at that time, Then the training of his navy team is also relatively sophisticated, so Japan has the ability to attack Pearl Harbor, and at that time Japan was also eager to obtain the resources of Southeast Asia, naturally wanted to occupy Pearl Harbor, so that Japan can not only continue to develop southward, obtain oil and rubber and other resources from Southeast Asia, but also control most of the Pacific Ocean, for Japan, which was ambitious at that time, attacking Pearl Harbor is undoubtedly an important step in military strategy, as long as it succeeds, then it is an important step forward for dominating the world. What's more, at that time, Japan and Germany had an agreement, and they agreed together to make peace in the Middle East, but for Japan, in order to reach the Middle East, it had to pass through Southeast Asia, and to attack Southeast Asia, then the first step was to attack Pearl Harbor.

Moreover, at that time, Japan must have also considered that the United States did not have a strong sense of strategic preparation, the Americans paid more attention to freedom, and the national cohesion was relatively weak, so naturally, in the face of military defense, everyone would not pay much attention to it, and the holiday would still be a holiday, so for Japan, a sneak attack was a very good means to attack Pearl Harbor, so Japan at that time decisively took such a military action, that is, a sneak attack on Pearl Harbor.

Japan's military action was carried out decisively, but unfortunately it was not as successful as they imagined, and it seriously provoked the United States, a powerful country that can transform industrial power into military power, forced such a powerful country into the anti-fascist alliance, and increased the strength of the anti-fascist alliance, and although Japan's sneak attack on Pearl Harbor was a short-term success and gained a temporary advantage in the Pacific theater, the United States soon reacted and regained the advantage in the Pacific theater.

To sum up, Japan's surprise attack on Pearl Harbor is extremely beneficial, so for Japan, attacking Pearl Harbor is a very important strategic decision.

In the year of World War II, Japan attacked Pearl Harbor, which drew the United States and its deep industrial and service economies into World War II, leading to the destruction of the Axis powers around the world. In what year did Japan attack Pearl Harbor during World War II?

December 7, 1941.

The fleet's planes bombed all U.S. airfields on Oahu and many ships anchored in Pearl Harbor, including the battleships there. Almost all warplanes on the ground were destroyed, and only a few were able to take off and return fire.

12 battleships and other ships were sunk or damaged. 188 aircraft were destroyed, 155 aircraft were damaged, and 2403 Americans were killed. Thousands of people died when the battleship Arizona alone sank.

The Pacific War broke out. The attack eventually embroiled the United States in World War II, an event also known as Pearl Harbor.