"The tactic of closing in on enemy ships at ultra-low altitudes and then slowing down and dropping torpedoes before they can reach the range of the enemy's small-caliber anti-aircraft guns should greatly reduce the threat of enemy anti-aircraft fire and give torpedo bombers a new lease of life. Dive bombers can also use similar tactics to safely approach within 10 kilometers of the enemy (Note 1), and then they can follow the traditional tactics to pull up to an altitude of more than 3,000 meters to carry out dive bombing, or they can directly rush to the enemy ship to carry low-altitude bombing, but low-altitude bombing can only carry high-explosive bombs, and armor-piercing aerial bombs are meaningless without the huge kinetic energy brought by high-altitude falls", after realizing that he had discovered a new bombing tactic, Yamamoto Isoroku danced happily and thought, " With this ultra-low-altitude penetration tactic, coupled with pocket submarines, even if the US military has strong air defense capabilities, a sneak attack can still achieve great success. ”

Chongren also became excited, completely ignoring Yamamoto Fifty-six's gaffe, and also actively used his brain like him, "This tactic should also be useful when attacking the ground, and the effect should be better, because the clutter on land is much stronger than at sea." By the way, after the enemy's anti-aircraft guns are attracted away by low-altitude bombers, there will be a chance for dive bombing, and the change in the status of the main attack and feint attack of the two will make the enemy unguardable."

"Bixia Shengming." , Yamamoto Fifty-six couldn't help but blurt out praise, but he also thought of a weakness of this tactic at this time, "If there are enemy planes at high altitude when the ultra-low altitude penetrates, it will be very dangerous, not only can you easily detect the surprise attack of our aircraft group, but also because of the advantage in altitude." Once the enemy planes dive down, our bombers will all be targeted. In this regard, it is not only necessary to let the ship-borne radar conduct air detection in advance to find out the situation, but also to let the escort fighters rise to a high altitude to engage the enemy when necessary, so as to protect the low-altitude bomber group, even if they are shot down in large numbers by the enemy's large-caliber anti-aircraft guns, there is no other choice, and in any case, the losses are much smaller than the original tactics. Alas, after all, no tactic is perfect"

The long conversation between the two men lasted more than two hours, which not only perfected the original tactics of the Japanese Navy, but also made important innovations in many aspects. But neither of them thought of it. Because the Chinese Navy is equipped with advanced small-caliber anti-aircraft guns that are ahead of the times, their close-range air defense capabilities are actually much stronger than those of Western countries (among them, Germany and the Soviet Union have obtained gyroscopic sights jishu, so they are temporarily stronger than the United States and Britain and other countries). The Soviet Union, on the other hand, was relatively poor in terms of the quality of its industrial base, especially optical glass. It is a little weaker than Germany. ）。 In other words, they think the enemy is too strong, but objectively this is not a bad thing for Japan

Speaking of zuihou. Chongren suddenly felt something, and sighed with a strange face, "Now it seems that the most effective way to deal with battleships is to rely on the battleships themselves!" If it is a battle formation composed of a mixture of battleships and aircraft carriers, it is stronger in both attack and defense than a ship formation with only aircraft carriers, and this is especially true when dealing with coastal fortresses that the enemy has to focus on defense. ”

Although Yamamoto Isoroku has long since turned into a complete "aircraft carrier victory theory," he still cannot raise objections to the emperor's assertion: "Indeed, at a time when anti-aircraft firepower has been greatly strengthened, it is indeed very difficult to rely on the limited carrier aircraft of aircraft carriers to deal with those heavily fortified coastal fortresses of the enemy, and if a battleship approaches a direct shelling under the protection of an aircraft carrier, the effect is much better, after all, the speed at which battleships deliver ammunition is incomparable, and even several times the number of aircraft carriers cannot be compared." In air defense operations, the new types of battleships that have been completed or refitted in the past two years are extremely powerful in anti-aircraft firepower, and unlike ordinary light cruisers and destroyers, they will reduce the combat radius of the fleet (Note 2), and can cooperate with aircraft carriers to enter enemy waters to fight in depth, making them defenseless. In addition, the survivability of battleships is undoubtedly the strongest of all ships, and the probability of being sunk by the enemy is much smaller than that of light ships."

"But now the empire only has two old Kongo-class battleships, although they have been modernized again, but they still can't be compared with the new battleships built by various countries, especially the main guns with only 356 mm caliber and significantly thinner armor", Chongren touched his face with his hand and said regretfully, "Is it a mistake for the empire to completely abandon the development of battleships in the first place?" ”

"Nope! Bixia, we're not wrong! Now it is also impossible to restart the construction of battleships! Hearing this, Yamamoto Isoroku's eyes immediately widened, and he shouted in disregard of the courtesy of the monarch and his ministers, if the battleship faction gets a chance to resurrect, it will definitely be these aircraft carrier factions who have successfully ascended to the position by stepping on the bones of many generals of the battleship faction even at the expense of cooperating with the army, so no matter what, he cannot let the emperor form the concept that "Japan needs battleships".

Yamamoto Fifty-six had a sudden attack, obviously losing his honor again, but he didn't care about pleading, so he immediately stepped forward and analyzed to Chongren, "The battleship is indeed not as useless as we thought it was, but it also has three fatal weaknesses. First of all, the battleship is built too slowly, with the rapid improvement of the level of domestic industrial management in the past two years, especially the major shipyards have generally begun to promote the assembly line shipbuilding method invented by Zhongfu International a few years ago, the construction speed of the aircraft carrier has been greatly accelerated, although the improved standard displacement of the Xianghe-class aircraft carrier exceeds 26,000 tons, but it only takes two years, or even less to complete (the shortest construction time of the American Essex-class aircraft carrier during World War II in history is only 14 months, The power of the assembly line shipbuilding method can be seen. ）。 However, it is difficult for battleships to apply these advanced production methods to speed up the construction, not to mention that it will take three or four years, judging from the process of the First World War, when we build it, now this Shijie battle is only afraid that it has been over, so even if you regret it now, it is impossible to start building battleships again, so as not to waste a lot of people, financial and valuable resources, but it will not be formed until the end of the war."

Note 1: Historically, during World War II, the maximum detection distance of the American radar for ultra-low-altitude flying targets was 15 kilometers, but that was the limit distance, and whether it could be found or not depended on luck, generally speaking, it was good to be able to find the enemy's low-altitude penetrating aircraft group at 10 kilometers.

Note 2: Therefore, the United States often can't bring much when fighting in the ocean, which also gives the enemy aircraft and submarines the opportunity to sneak attack, so the United States in addition to the Iowa-class battleship's air defense capabilities are extremely strengthened, but also made an air defense "light cruiser" with a endurance of more than 10,000 nautical miles, and the Akizuki-class air defense destroyer made by the devil in the late stage of World War II also has a quite amazing endurance (to be continued......