Even though Yu Gengnian did not explain it in detail, after seeing the content of the information, Tan Renhao immediately knew that this was an extremely important piece of information sent by the Imperial Military Intelligence Bureau.

The predecessor of the Imperial Military Intelligence was the Imperial Army Intelligence and the Imperial Naval Intelligence. Later, because of the huge waste of human resources of the two intelligence services, as well as many problems exposed in the last war. As a result, after the end of the war, the two intelligence directories were merged into military intelligence. This is the most important military intelligence agency of the Empire, and its main duty is to spy on the military intelligence of other countries, especially those hostile to the Empire.

This information is not very content, there are a few photos in it, and a few data sheets. When Tan Renhao saw those photos and data sheets, he immediately looked very surprised. The photos were taken from different angles of an airplane, or a model of an airplane, and the data sheet shows the aircraft, along with performance and size data for several other aircraft. Tan Renhao was surprised not by the plaster flag on the plane, but by the data on the data marker.

This is the case of several naval combat aircraft that Japan is developing, and it does not matter how the intelligence officers of the empire obtained this information. The important thing is that the performance of these fighters has completely surpassed the combat aircraft equipped by the Imperial Navy, and is even much more advanced than the three combat aircraft that are still being developed. In other words, the Imperial Navy's highly-anticipated Sparrowhawk fighter, Kingfisher dive bomber, and Osprey torpedo bomber were already lagging behind Japan's new fighters in terms of performance before they were mass-produced.

Tan Renhao was surprised by this, he couldn't believe his eyes, he even felt that this information was not credible at all. According to previous intelligence, Japan has always been the lagging behind of the major powers in the development of aero engines, especially in turbochargers, Japan started very late, and did not receive assistance from other powers at all, and did not even have the opportunity to cooperate in research. Without a turbocharger, it would be difficult to create a high-power aero engine, and without a high-power aero engine, it would be impossible to create a fighter with superior performance. However, when Tan Renhao saw the detailed data of those fighters, he no longer doubted it.

The fighter codenamed AM6, known as the "Zero", was actually just a light fighter jet, using a 12-cylinder star-shaped air-cooled engine, which had a maximum output of only 950 horsepower, which was much smaller than Shenfei's Feng-12 engine. However, the speed of this fighter is close to 300 knots, while the Sparrowhawk is designed for a maximum speed of only 280 knots. There are two reasons why the A6M can achieve such a fast speed, one is that when designing, the designers reduced the unnecessary equipment on the aircraft as much as possible, reducing the weight of the aircraft, for which the aluminum load-bearing structure was adopted, and the range was increased by mounting large auxiliary fuel tanks, thereby reducing the internal fuel load, and at the same time almost all the defensive armor remained. The second is to minimize the protrusion of the outer surface of the aircraft to reduce aerodynamic drag. For example, a fully enclosed retractable landing gear, a bubble-shaped cockpit and so on. As a result, the empty weight of this fighter was less than 1.6 tons, while the empty weight of the "Sparrowhawk" reached 2.4 tons.

After seeing this, Tan Renhao had to admire the designers of the Japanese aircraft, who were able to create such a fast fighter with such a small power engine. Of course, he wasn't too surprised. Lightness has the benefit of being lightweight, but its drawbacks are also very obvious. For example, after dispensing with all the armor, such a fighter will be vulnerable. Lightweight aircraft have certain advantages in combat, but the lack of engine power is unlikely to be changed, and this will directly affect the overall performance of the aircraft.

Although Tan Renhao's knowledge of aircraft can only be regarded as scratching the surface at best, he knows very well that this kind of fighter made by the Japanese may be able to lead for a while, but as long as the Japanese do not make breakthrough progress in aero engines, then it is impossible for them to build more powerful fighters, and it is impossible for them to win future wars. However, the threat of this new fighter is real, and the Japanese side is already preparing to put it into production, and if the Imperial Navy does not have a fighter that can match it, then the Imperial Navy will face an extremely disadvantageous situation in a future naval battle.

Three days later, Tan Renhao submitted two reports to General Yu Gengnian, the most important of which was the performance requirements report for the new fighter.

This time, Yu Gengnian showed a satisfied expression for the first time, and he read the report submitted by Tan Renhao very carefully. "Captain, you are very serious and rigorous in your work, and it seems that Marshal Saditing is not wrong. These two reports are very well written and wonderful, and they are thoughtfully analyzed in all aspects, which is one of the best aviation reports I have ever seen! ”

Tan Renhao smiled a little shyly, Yu Gengnian is a serious soldier, and he is not stingy with praise if it is not enough.

"Alright, you can go pack your bags."

"Packing?" Tan Renhao was taken aback, he wouldn't give himself a holiday.

Yu Gengnian was also stunned, and then said: "When you return to the Fifth Fleet tomorrow, it was General Liao Hanxiang who personally called me and asked you to report to the Fifth Fleet immediately." Of course, I'll keep your job here, and you'll be ready to come back at least until the two-year secondment expires. ”

Tan Renhao breathed a sigh of relief, at least his job hasn't been lost.

"There's a transport plane going to Naha early tomorrow morning, so you can take that plane back." Yu Gengnian sent Tan Renhao to the door, "I heard that the spring military exercise will start in two months, and I hope to see your excellent performance at that time." ”

Tan Renhao nodded hurriedly, and then said goodbye to General Yu Gengnian. Obviously, General Liao Hanxiang is recruiting him back now for the sake of the spring military exercise. This is an annual event of the Imperial Navy, and it is also directly related to the status of the fleets of the Empire in the new year. For ordinary soldiers, the spring military exercise has another meaning. Every year, after the spring exercises, a large number of officers are promoted, and this is the best opportunity to receive credit. Obviously, General Liao Hanxiang will not exclude his most proud subordinates, even with Tan Renhao's current military rank, he will not be promoted again in the spring military exercise, but the accumulation of credit will be of great significance to his next promotion.