In addition to the coastal guns of the same class as the main guns of the battleships, Oahu was also equipped with 6 356mm train guns, 2 305mm train guns, 18 203mm heavy guns (half of which were batteries and half of which were train guns), 51 155mm howitzers, and countless field guns. If they directly land on the beach, the Japanese landing force of only 8,000 people will have no chance of winning, and will even be directly wiped out on the beachhead by the sharp artillery fire of the US troops

However, the U.S. military also has a fatal weakness, especially since the U.S. military on Oahu is not in a state of imminent war, otherwise the U.S. would have distributed some "medicines" (Note 2) to the troops participating in the war before the war to cheer up their spirits, and the fighting spirit of the U.S. military would have been much more tenacious. Historically, the US military has a very significant feature in combat, that is, whether it is an active offensive or a prepared defensive war, the mental outlook is not bad, but if it is suddenly attacked without preparation, it is easy to be defeated by an enemy whose strength is far inferior to itself, and the reason is that the US military does not distribute drugs to officers and soldiers in peacetime (otherwise the US army is similar to the double spearmen of the Qing Dynasty), so the will to fight is far worse than when the medicine was used

And the current defenders of Oahu are in this state, and the reason why the resistance has gradually strengthened instead of collapsing is mainly because the powerful fortress group on Oahu is still in the hands of the American army. Yamaguchi Tashi, who had been preparing for this battle for a long time, had long anticipated the current psychology of the US army, and came up with a very targeted strategy of "capturing the thief and capturing the king first". that is, to try to destroy the coastal fortresses that the US military considers impregnable, in order to destroy their will to resist,

Although Yamaguchi Tawen does not have large-caliber battleship cannons available now, there are Zero heavy dive bombers that can carry 1.8 tons of super-heavy aerial bombs, as long as the bomb is high enough and the aerial bomb can obtain enough kinetic energy, its penetrating power is very terrifying, and although the American fortress on Oahu Island is extremely strong, the top is still relatively weak. After all, under normal circumstances, the threat from the front (large-caliber armor-piercing shells fired at close range) is always greater than that from the top (armor-piercing aerial bombs dropped by aircraft and large-caliber armor-piercing shells fired from long distances), but when it comes to the Zero heavy dive bombers and the 1.8-ton "ground-penetrating bombs" they carry in the third attack. This small flaw, which could not have been considered a weakness, was enough to kill

After China reached a peace agreement with the dollar. Immediately abiding by its promise and opening up the export of cloudburst bombs, Japan also followed suit, so it was impatient to let Yamaguchi Tawen, who was in China, contact the Chinese side and wanted to import cloudburst bombs for imitation. Hu Weidong knew that it was impossible for the devil to imitate it successfully. On the contrary, it may be possible to get the first generation of cloud burst bombs from Germany in the future. Rather than so. Naturally, if you don't make money, you don't earn in vain. Moreover, after guessing Japan's intention to move south, Hu Weidong, who was very depressed by the stubbornness of the United States and Britain during the negotiations, could not help but come up with the idea of letting out his anger (and at the same time helping China to obtain greater benefits in World War II), and immediately strongly recommended to Yamaguchi Tawen the new product newly developed by the Commission of Science, Technology and Industry for National Defense -- the ground-penetrating cloud burst bomb (originally with the Hindenburg-class battleship as an imaginary enemy [after all, China still has to join the alliance after all]). The name is not called a ground-penetrating bomb, but in order to arouse the Japanese desire to buy, Hu Weidong changed its name in response to the psychology of the Japanese side. Yamaguchi was worried about how to deal with the fortified fortress on Oahu, and when he heard that the new bomb was so effective against the fortified fortress that he decided to buy it at all costs

However, because the price was too expensive, in order to have a good reason to convince the Japanese government and the Admiralty, Yamaguchi Tarumi still asked the Chinese side to demonstrate the 1.8-ton ground-penetrating cloud burst bomb he most wanted to buy, and it turned out that it could be safely mounted and dropped by the heavy Stuka (basically equivalent to the Zero heavy dive bomber imitated by the devil), and the large crater that it blew up on the shooting range was more than 20 meters deep (indicating that it has the ability to penetrate 20 meters thick soil and rock) made Yamaguchi Tawen even more ecstatic. Although this kind of power can only be possessed after the bomber dives to the limit speed and then drops at an altitude of 3,000 meters, Yamaguchi Tabun is very confident in the bomber pilots of the Japan Navy, "For a fixed-point target with a diameter of at least 20 meters, it is a dive bombing method that has the least impact on accuracy, even if the bomb is dropped at an altitude of more than 3,000 meters, they can do it without leaving ten, right?" ”

However, although Yamaguchi Tawen personally wanted to buy more, the Chinese offer discouraged the Japanese Admiralty, which had always had deep pockets, and finally after Yamaguchi Tawen's best efforts, Yamamoto 56 agreed to buy 20 pieces (two were used up in the sampling, so he actually bought 22 pieces). ）。 Due to the small amount of purchases, the unit price is naturally even more ridiculously high, and it is even more than 1 million US dollars each, which means that one ground-penetrating cloud bomb is equivalent to ten (Note 3) Japan's latest Zero fighters

Note 1: Because the United States fought with Germany first in this time and space, and Japan pretended to be too similar to Sun Tzu, the garrison on Oahu at this time was one less infantry division than during the Pearl Harbor incident in history, which is also an important reason why Yamaguchi Tawen dared to propose madness.

Note 2: In fact, it is a drug, methamphetamine, heroin and other drugs, methamphetamine is strong and cheap, so it is used the most (historically, methamphetamine was not designated as an illegal drug by Western countries until 1962), in fact, during World War II, except for China, almost every major participating country used it in large quantities. Of course, under normal circumstances, the dosage is strictly limited, and it will only be distributed to the lower-level officers and soldiers of the US military before the battle, so there are not many addictions, but the physical and mental harm is still difficult to completely avoid.

Note 3: Although the process and production management methods are much stronger than in history, the consumables and production difficulties of the heavy Zero fighter are also greater than those of the historical light aircraft, and because the production time is not long, the scale effect has not yet fully emerged, so it is normal for the unit price to be as high as 100,000 US dollars.

PS: During World War II, the unit price of those classic single-engine fighter models after mass production began to be around 50,000 US dollars, of which the zero fighter is the lowest because of its simple structure, less consumables, and extremely cheap labor in Japan, the unit price is the lowest, and the unit price is only less than 20,000 US dollars (55,000 yen) after mass production, but the cost is still extremely high in the first two years, and it is as high as hundreds of thousands of dollars in the first year. It must also be noted that due to the relatively weak industrial base, Japan took the longest time from sample delivery to mass production among the World War II powers (to be continued......