In the original history, the advance of the US military on Leyte Island was very difficult, and it was unable to move for a long time. In the end, the U.S. forces landed on the other side of the island, taking a two-sided attack, and it took more than two months until the last moment of the year, December 30, to finally occupy the island.

But in this space, the input of fuel air bombs made the fortifications that had been a headache for the American army become vulnerable, and the Americans could only use the way of the Marine Corps to solve them with more casualties and grenades, blasters, and flamethrowers in less time; Or use the army way, with never-ending bombing, shelling, Spitfire tanks, armored bulldozers, and spend days or even weeks to solve them.

But now the input of fuel-air bombs has changed this situation, and the fortification groups that used to take two or three days, or even a week, to gnaw on now only need a few bombs to drop, and then wait another ten minutes, and then someone can be sent up to receive them. Therefore, the progress of the US army has suddenly increased, and even the main reason for restricting the advance of the US army has changed from the enemy's resistance to the difficult road in the jungle area. From the injection of fuel air bombs to the final occupation of the entire island by the US military, it took only a little more than a week.

After the first few blows, Rì himself had already understood that their fortification group could no longer provide them with any effective protection, and that it would only become their graveyard. They found that the efficiency of fighting in fortified groups was even less efficient than that of field warfare. So in the last few days of the battle on Leyte Island, the Rì army abandoned its fortifications, they tied white strips of cloth with red letters such as "Wuyun Chang" on their heads, and the officers brandished command knives, while the soldiers stood up with Type 30 rifles or Type 99 rifles equipped with Type 99 bayonets, shouted the slogan "Emperor Banya", and launched a "decisive assault" against the American troops under the cover of night sè. This kind of impact tactic was "pig rush" by later generations, that is, a tacticless tactic that rushed straight up like a wild boar.

However, since Kuah Island, the U.S. military has become familiar with Xi Xìng, who likes to launch such attacks. Now that things are going so well, General MacArthur has reminded his officers more than once of the possibility of a night attack. Therefore, the "cowards" of the US Army will generally stop advancing at half past two in the afternoon, and look for suitable camps to make all kinds of defensive preparations. During this period, the American soldiers did things that made the bald head strong envious, and in order to protect the shè realm, they often cut down all the trees within more than 100 meters of the camp. And pull up the barbed wire, arrange the points of machine gun and mortar fire. As a result, the pig mutated almost indistinguishably from giving away a human head.

However, Rì himself on the island, before the collective "jade shattering", still remembered to send a telegram to Yamashita Fumi, reporting the use of fuel air bombs by the US military to Yamashita Fumi.

The rapid loss of Leyte Island greatly surprised the expectations of Yamashita Fumi, known as the Malay Tiger. Rì himself is not ignorant of the situation with the US military's choking bombs. A few months earlier, the Germans had provided Rì himself with information about this. However, the Rì army has always paid little attention to intelligence and did not take the Germans' jǐng sue seriously.

The so-called fact that rì himself does not attach importance to intelligence actually refers to the fact that rì himself does not attach importance to the analysis and study of intelligence. In terms of collecting intelligence, Rì himself is still very thoughtful, for example, in the operation against China, the military map used by the Rì army is even more detailed and accurate than the map used by the squadron. But after getting the information, Rì himself is reluctant to put a lot of effort into studying them, and often just looks at them casually, and then sorts them into categories. As a result, knowing that the Americans had thrown this thing on the top of Rì's own head, Rì himself began to wonder if the Americans had used the "decisive gas", and some people were even clamoring to use the "decisive gas" of the rì to counter the Americans' "decisive gas". Fortunately, there aren't too many fools with such brains, and most decision-makers are quite clear -- it is definitely Rì himself who suffers when it comes to dropping chemical weapons.

In the midst of the chaos, Yamashita demanded that the Americans be investigated immediately and how to deal with them. As a result, I checked it in the country, and then told Yamashita that the information about this thing had been available for a long time, and it was placed in the archives of the base camp.

As a result, these important pieces of information, which had been obtained long ago, began to be taken seriously, and each general was sent a copy of such information in his hands.

Iwo Jima, the headquarters of Awabayashi Tadamichi.

"Yaga! These idiots! Why is this information only being shown to us now? "Awabayashi Tadado is throwing a tantrum. Paper, pens, paperweights were thrown all over the floor.

"How is the base camp doing! Such important information is only being notified to us now! Go and send a telegram to the base camp and tell the base camp that they should check if they have American spies in them! Su Lin Zhongdao yelled at his lieutenant.

"Hay!" The adjutant agreed, and bowed to Ayabayashi Tadamichi, but he didn't really leave to deliver the report, because he knew that the general was just talking angry. If there were American spies in the base camp, then he would not have simply thrown this information into the archives for archiving.

"These idiots!" Su Lin Zhongdao continued to curse. He really couldn't help it, it took him a long time to make the decision to abandon the beachhead, dig deep holes and fight a protracted war, and then personally led the troops guarding Iwo Jima, working all night and night, turning the locust army into a rat army, it was not easy, and it was not easy to build a defense system based on underground fortifications on Iwo Jima. And at this time, they were told that the enemy had a weapon that could really restrain his own deployment. He had to overhaul all the fortifications, or he would be dead!

"Damn it! Order, slow down the construction of the fortifications for a while, and ask the base camp to send us a large number of oxygen cylinders, and also, send me a few construction experts! Su Lin Zhongdao vented, calmed down, and said this to the adjutant.

Compared to the furious Kuribayashi Tadamichi, Yamashita Bongfumi's performance was much more stable. Unlike Iwo Jima, the Philippines is larger and has more room to maneuver. It is certainly not a good thing for the Americans to have new weapons, but it is not impossible to change tactics in a war. And, at least for the time being, the rapid advance of the Americans allowed him to avoid a big problem.

After the Battle of Leyte Gulf, the Rìben Navy could be said to have been completely wiped out. So how much did the US military lose? Based on the reports of his own pilots and other fighters, and with reference to the results of sea and air battles off Taiwan's coast, Rì himself made the following judgment: At least seven large US aircraft carriers were sunk, and a large number of other ships were sunk or damaged. That is, the American fleet has also lost its combat effectiveness.

Yamashita doesn't believe this judgment at all. But what is worse is that there is a guy named Terauchi Shouichi who is convinced of this, and what is even worse is that this guy is also his immediate boss - the commander-in-chief of the Southern Army. Believing that the U.S. Navy had suffered considerable losses and that the Allied ground forces were difficult to defend, Terauchi forced the commander of the 14th Philippine Front, Army General Yamashita Fumi, to supply and reinforce the defenders of Leyte. Yamashita found that the U.S. Navy was almost unscathed, based on the judgment of the staff officers and the testimony of the captured American pilots. In such a situation, crossing the sea of 730 kilometers to reinforce Leyte Island is no different from sending it to death. However, the officials and the first level crushed people to death, and Terauchi Shouichi never believed that the US troops were unscathed, and even thought that those who doubted the results of the Rì army were "non-nationals" who had lost confidence. So under the pressure of "political correctness", Yamashita had to start preparing for this deadly cross-sea reinforcement operation.

"This guy, if only he had been seppuku at the age of 36!" Under the persecution of Shouichi Terauchi,Yamashita,I had to plan to die once.,I scolded this guy in private like this.。 And at this time, the news came from Leyte Island that the U.S. troops were making rapid progress and that the defenders were determined to "break the jade". The news certainly shocked Yamashita, but at least, for now, there was no need to think about the death plan. (Historically, the result of this reinforcement was that a large number of troops were fed the fish.) ）

"It's just that how to deal with such bombs of the Americans in a defensive war is really a nerve-wracking problem." Yamashita thought.

……

"The original fortifications had to be renovated. Each bunker is to be equipped with an airtight bullet shelter. A certain number of oxygen cylinders or other aeration equipment should be stored inside. The underpass should be prepared with a double door, the door should be made of steel, and it must be of sufficient thickness. In addition, it is better to have a double turn of explosion-proof in the tunnel between the two doors...... "An expert is explaining to Tadamichi Kuribayashi how to deal with the U.S. military's fuel air bombs.

"Professor, this will make the whole project much bigger." Kuribayashi said, "It's hard for us to meet such a request with time and resources, so there's no way to simplify it." For example, it is difficult for us to have so many oxygen cylinders, can we use some oxidants, such as hydrogen peroxide or potassium permanganate or something to temporarily produce oxygen? For example, those steel doors are too costly, can they be replaced by other ways? ”

"General, hydrogen peroxide is dangerous, and improper storage is easy to cause accidents. As for the door, it is difficult to ensure the strength with other materials. The expert replied.

"It's okay to keep it properly?" A staff officer chimed in, "Also, if we make the door a little smaller so that we can only crawl in and out, we should save a lot of materials?" ”

"Isn't it a dog hole to go in and out like this?" Another retorted, "Besides, it's too slow to get in and out of a door like this." ”

"As long as you can fight the American ghost animals, there is something in the dog hole! As for the slow speed, it would be nice to intensify the training! ”

……