The use of new self-developed steel allows the submarine to withstand greater water pressure. Absorbing the most advanced torpedo technology of the Japanese army and pirating the submarine engine technology of the US army, the Xinghua Army soon developed a new type of submarine.

Despite the fact that the displacement of this submarine is not as large as the tonnage of the currently equipped submarines, and even the submarine is equipped with only eight mines. However, the submarine's diving depth and underwater propulsion speed are better than the existing submarines.

The tonnage of the submarine is small, but the combat effectiveness and performance have been greatly improved. The officers and men of the submarine force in charge of the test soon fell in love with this type 1 submarine named the 'Jiaolong' class. In their opinion, this submarine they prefer.

In the course of sea trials, the 'Jiaolong' submarine also cruised in the waters where Japan and the United States were at war. Even if it ran into Japanese and American submarines in the sea, the Jiaolong could find it, but the other side's submarine did not discover their existence.

From this point, it can also be shown that the 'Jiaolong' submarine is very concealed, and the endurance is also very good. In short, after more than a dozen sea trials of various performances, Zhao Tiehu ordered the construction of six submarines of this type at a time.

With a formation of six submarines, an effective attack submarine group can be formed. Because this submarine has a relatively large diving depth, it is difficult to detonate them underwater even if they are discovered by enemy surface ships after the attack.

After all, the depth of depth charges currently being developed by various countries is limited. The depth of the 'Jiaolong' is far higher than the effective explosion distance of the depth charge.

After the addition of diving, the speed of the submarine under water is not low. This will allow the submarine force to quickly dive and retreat out of the combat area after carrying out a sneak attack. At that time, it will not be easy for surface ships to search them out.

Liu Liming, the captain of the submarine brigade who personally participated in the sea trial, also said directly: "Wolf head, build a few more!" With this submarine, even if the aircraft carrier of the little devil is afraid of it, the next time I encounter it, I will dare to bite it twice"

Regarding Liu Liming's words, Zhao Tiehu shook his head and said: "I also want to build a few more ships at a time, but our new steel and ships are limited." Six ships are already the limit of the current military factory, and if you want to equip more, you can only wait.

Most importantly, the performance of this submarine may have surpassed the new submarines of Japan, the United States and other countries. As a submarine commander, you should be aware that in recent years, the technology in the military industry has changed with each passing day.

Perhaps when we build six new submarines, it is very likely that other countries will also develop new types of anti-submarine weapons. Therefore, if we build six ships first, and if we want to build them again later, I believe that the performance will be better than now.

For a long time to come, the naval force that will guard our coastal defense line will be your submarine group. As for the Japanese aircraft carrier that was sunk in the previous bombing, we will not be able to salvage it in a short time, which will irritate the Japanese people.

However, after the defeat of the Japanese bowl, the Japanese ships that we sank under the surface of the Davao Sea earlier may be able to find a way to salvage them. Once those ships are repaired, our naval power will be stronger. ”

It is clear that naval construction cannot be developed in a short period of time, and Zhao Tiehu's plan for the navy is more focused on coastal defense. As for the naval vessels, Zhao Tiehu also hoped to obtain them in the form of capture.

The rest of the Japanese aircraft carriers that were sunk by the U.S. military earlier, Zhao Tiehu felt that there was no way to salvage them. But the Japanese aircraft carrier that sank in Davao Bay, as well as the rest of the large ships, he wanted to salvage it for repair.

In that case, I believe that the cost will also be reduced a lot. By that time, the Japanese bowl had already been defeated, and it was believed that they would not be able to prevent the Xinghua army from salvaging the spoils belonging to the Xinghua army. After all, the tonnage of that aircraft carrier is still good.

The successful development of the new submarine has undoubtedly given a shot in the arm to the military research and development department of the Xinghua Army. In terms of the Air Force, with the help of the breakthrough of new rare earth steel, there has also been a new breakthrough in the research of aircraft materials.

After some efforts by military factories, the first new fighter was also developed. The engine used is also the latest engine technology obtained from the U.S. military. It's just that it still belongs to the cottage.

As for the patent, Zhao Tiehu didn't pay attention to it at all. After all, for the current Xinghua Army, it is most important to accumulate strength first. As for the rest, let's wait until after the war!

The newly developed heavy fighter has much more firepower and flight speed than the Japanese Zero. As for large bombers and transport planes, Zhao Tiehu didn't want to touch them for the time being, and it was more important to accumulate technology first.

There is a lot of money invested in the military R&D department, and these experts are hired and hired in Mindanao. A lot of people don't know exactly where they are, but they just know that there's a very strong research atmosphere here.

Experts hired or forcibly invited from various countries are debating new design and development solutions every day. The funds given by Zhao Tiehu and various R&D equipment are undoubtedly very generous.

In addition, the treatment given is also very good, so that many experts who know that they cannot leave for the time being can only devote their energy to weapons research and development. After all, for these experts, developing new weapons is their favorite.

Although a large amount of funds were consumed, Zhao Tiehu felt very difficult. But the large amount of gold that Zhao Tiehu snatched from Thailand last time still helped Zhao Tiehu a lot. What's more, those also seized a large amount of Japanese currency.

These banknotes issued in Japan were handed over by Zhao Tiehu to the National Salvation Association, and the people of the National Salvation Association were asked to spend the money. In turn, a large amount of scientific research equipment urgently needed by the Xinghua Army was purchased from Japan and China.

In addition, David, who still lives in Mindanao, also helped Zhao Tiehu buy some equipment and technology from the United States through his connections and secret channels. For David, as long as he has money, he is not taboo about anything.

At least for the time being, many people in the United States have a favorable opinion of the Xinghua Army. Especially those who have family members in Nanyang and were finally successfully rescued by the Xinghua Army, many Americans are very grateful to the Xinghua Army.

Even with a good relationship with Xinghuajun, David took over some things in the United States to find people for his family. He can also help some prisoners who have been transported out of the South Seas by the Japanese army to serve hard labor in the mainland and other colonies.

Of course, most of the Americans who can privately pay David to entrust the Xinghua Army to help them recover their missing family members in Nanyang are relatively wealthy. In this case, the Wolf Warrior and the National Salvation Association occasionally do something to find the missing person.

As people were rescued from other Japanese prisoner of war camps, many British and Dutch sides, who also had missing soldiers and personnel, had to spend money to entrust the Xinghua Army to redeem or rescue some important people for them.

The worst thing is that even if they collect some news about the missing people, both countries will give the Xinghua Army a certain amount of compensation. In this case, as long as Zhao Tiehu takes the money and wants to purchase some prohibited materials, all countries will turn a blind eye.

After all, these devices are not considered by many to be too sophisticated in their home countries. It turned out that Xinghuajun was willing to spend money, and they also needed Xinghuajun's help, so it was naturally not easy not to do such a business.

Almost every once in a while, a list of tasks is received to search for missing persons. As a result, the Wolf Warrior and the Salvation Association have not only made money, but also reaped a lot of benefits by virtue of this lucrative business.

When these rescued people were sent to Mindanao one after another. Looking at the telegram sent back, the family members who were anxiously waiting for their whereabouts in China undoubtedly looked very excited and thanked Xinghuajun very much.

Through this search and redemption, the Allies also found out about the situation of their prisoners of war. In the end, only a few were rescued, but many more prisoners of war were crushed to death by the Japanese army.

After the news of these prisoners of war spread, the Allied hatred of the Japanese army undoubtedly increased a few points. Even in the end, MacArthur personally called Zhao Tiehu, hoping to ask Zhao Tiehu to help him more about rescuing the prisoners of war.

In the face of MacArthur's call, Zhao Tiehu also replied directly: "As far as the current situation is concerned, through the channels of the Xinghua Army, it is still possible for the Xinghua Army to rescue a small number of captured prisoners of war with some manpower and material resources.

However, if we want to rescue these prisoners of war in large numbers, we need more resources and human and financial resources. Most importantly, most of these prisoners of war were held in the core areas of the Japanese army, and many of them were sent to the Ryukyus and Korea.

In these two places, although the Xinghua Army has a certain amount of armed force, it is still somewhat powerless to compete with the armed forces there. However, the Xinghua Army will find a way to rescue some more captured Allied prisoners of war. ”

At the end of the telegram, Zhao Tiehu even suggested that the US military contact the Eighth Route Army, which currently has considerable strength in northern China. If the Eighth Route Army had helped, it might have been more certain that the Xinghua Army would have rescued the prisoners of war in Korea.

After all, according to intelligence, many Allied prisoners of war who were captured in Nanyang were currently being held in Japanese mines in Korea. Once the wolf warrior rescues them, I'm afraid that they won't be able to find a ship back to the South Seas for them.

This means that after the people are rescued, they still need the protection of the anti-Japanese forces in China. But if you want the Eighth Route Army to help, it is naturally impossible for the US military to not have some blood!

When MacArthur received a telegram saying that he would send representatives of the American army in Chongqing to Yan'an to discuss with the Eighth Route Army. The Eighth Route Army, which had received a telegram from Zhao Tiehu in advance, also put forward some demands in due course.

At least in terms of military aid, the Eighth Route Army also hopes that the US military will also fully consider their existence and opinions. Even if the military aid provided is not as good as that of the Zhongyi Army, I believe that it is also a good harvest for the Eighth Route Army.

And this situation also made the Eighth Route Army really realize that in fact, the powerful US army is not so terrible. If the U.S. military is really that powerful, why should it ask the Eighth Route Army for help in rescuing prisoners of war?

With such a cognition, Zhao Tiehu believes that over time, it will also establish the self-confidence of some high-level leaders in China. Let them know that in fact, foreign devils are nothing great. In Huaxia, in the end, it is up to them to decide!