Shortly after the annihilation of the Tanaka Qin Infantry Regiment, the Japanese commander of Shandong, Otaka Guizo, the commander of the 12th Army, was held accountable because the relatives of the Japanese emperor threw their lives in Liangshan and were held accountable. They mobilized more than 5,000 people in anger. They took turns to "sweep" in western Shandong and southwestern Shandong, but returned in failure. Liangshan, Yun (cheng), Juye, Heze, Juancheng and other areas were still controlled by the 115th Division of the Eighth Route Army, and the base in western Shandong was still stable.

In addition, the existence of various anti-Japanese armed forces such as the Shanxi-Hebei-Hebei Detachment, the Sulu-Hebei Detachment, the National Army Security Corps, and other anti-Japanese armed forces north of Longhai Road have restrained a large number of Japanese troops.

In eastern and western Henan, a large number of national troops have been concentrated. Even if they attack the eastern Henan region, the Japanese army will realize that at least tens of thousands of troops must be dispatched to win. Moreover, the western section of Longhai Road has been broken and many strongholds along the road have been defeated. It is not easy for the Japanese to restore their maneuverability.

In other words, if the Japanese army wants to sweep the Yongcheng base, they must dispatch nearly 10,000 troops. The more troops they dispatch, the more materials they consume and the longer preparation time they prepare.

Yang Tianfeng knew the truth that the lips were dead and the teeth were colder than anyone else. As soon as the battle ended, he gave Chief of Staff Lin Cunzhong specific instructions to give some of the seized guns and ammunition to the anti-Japanese armed forces participating in the war in the name of thanking the help of the war, the Hebei-Shandong-Henan Detachment, and the Sulu-Henan Detachment obtained Japanese equipment from a battalion and dozens of steel fists.

Besides, the losses and supplements of the third column, Guo and Jiang's two detachments had suffered a lot of casualties after several battles, but the organization of the fourth detachment was cancelled and all personnel were added. In addition, Cao Dazhong and Li Zhongyi's puppet army, as well as the new recruits recruited in the Guangfu District, were restored, and far exceeded the previous number.

Since the number of the New Seventh Army was established, the Third Column became history and the organization of the troops would also change. The First Division Guo Songlin, the Second Division Jiang Jicai, the Third Division Tong Zhihe, the Independent Brigade and the Direct Guard Brigade were led by Zhao Qing and Chen Dalong respectively.

When Sun Dianying's troops were reorganized and merged, Yang Tianfeng calculated the speed of recruitment of new recruits. The total strength of the New Seventh Army would reach at least 27,800, and it might even reach about 34,500.

Of course, the negative impact of such large-scale expansion is the decline in overall combat effectiveness. To avoid such results, there is no other way except to strengthen training.

One month is too hasty. If it can be delayed for two to three months, it will almost be able to expand, integrate, and train all the troops quickly, so that the overall combat effectiveness will be restored to the level that Yang Tianfeng hopes.

But how can we delay the Japanese's revengeful attack? Yang Tianfeng kept making various ideas in his mind, and even he was a little absent-minded when watching the third test flight of the plane.

Although Yang Tianfeng came up with the best plan to learn from others' strengths, he still found some problems during the first and second test flights.

The left side will be slightly tilted during a flat flight, which requires adjustment of the control cable level; tail shaking occurs when flying at a speed above 360 ​​km/h. By adding a wing root fairing, the junction with the wing is smoothed, and the vibration problem is solved...

In just seven days, the plane went into the sky again after several improvements and reinforcement.

Rolling, climbing, diving rapidly... The plane maneuvered in the air, which was much more courageous than when it was in the previous test flights. The agility of the plane looked very good, but Yang Tianfeng was still a little worried that it would tear the wings.

However, according to the description of test pilot Han Zhen, although there were problems in the test flight, the driving performance and flight characteristics were still smooth, exceeding the main fighter currently used by the National Army - the Soviet Little Donkey 16. If it can be raised to the limit, the aircraft may be able to fly faster, higher and more flexible.

This is not surprising. This aircraft adopts a brand new single-wing structural design, unlike the Yi 16 fighter, which still has the structural characteristics of a biplane fighter. Moreover, the Yi 16's fuselage design is immature, resulting in greater resistance during flight and affecting maneuverability.

Especially the control performance of the Yi 16 can be said to be very bad. The aircraft is trembling almost all the time, which greatly affects the shooting accuracy and is not a stable shooting platform. When the aircraft suddenly dives or flips, the engine will also vibrate violently, seriously affecting the pilot's control and shooting. At the same time, when the aircraft's maneuvering speed is particularly fast, there is a risk of out-of-control and tail spinning will often occur.

Therefore, after the birth of the Iranian 16 fighter, due to the problem of operating problems, even if the most powerful pilots are selected, accidents often occur. For example, the Red Team aerobatic pilots, Huppelun and Yewuseyev, were killed and injured. There was also Kurqiunov, the first captain of the Soviet Air Force to China, who led the first batch of Iranian 16 fighters from Xinjiang to Nanjing, crashed and died near Gansu due to the loss of control of the aircraft.

It can be seen that even the best pilot is like this, let alone ordinary pilots. This is definitely contrary to Yang Tianfeng's idea of ​​training as many pilots as soon as possible.

Of course, based on the current manufacturing level, the instrumentation equipment of this aircraft is relatively simple, with only oil meter, compass, and altimeter, which is not much different from the Yi16. However, the installation of short-wave radio stations and walkie-talkies has made great progress in communication.

Moreover, due to the wooden main structure and the perfect aerodynamic shape of the fuselage and the advanced design of the wings, the fighter named "Eagle" type by Yang Tianfeng has great advantages in reducing weight and reducing air resistance.

According to Yang Tianfeng's estimate, it is at least 400 kilograms lighter than the Japanese Zero Type. This is the result of an eight-mm steel plate being installed behind the driver's seat outside the fuel tank.

Of course, this is also a helpless move to make up for the lack of engine power. Light weight, small wing load, and flexible maneuverability are probably the biggest advantage of the Eagle.

"Sir, I think the second plane can be manufactured according to this design." Sun Gang was unbearable. Han Zhen was old-fashioned in flight skills and calm personality. He could not take away this plane. In private communication, he also agreed with Han Zhen's point of view that the comprehensive performance of the Eagle aircraft exceeded that of Yi Sixteen, and could compete with Japanese aircraft in air combat.

Yang Tianfeng gave him a blank look and said no. He was not anxious to fight against Japanese aircraft, nor did he think the Eagle could compete with the Zero, which will be launched next year. He had to wait for better engines, wait for more aircraft manufacturing engineers, and wait for more pilots to be trained. In other words, the Eagle was just an attempt to test the ability of wooden aircraft to withstand the ability of wooden aircraft.
Chapter completed!