On June 6, 1940, 152 B10 medium-range bombers of the 4th Bomber Brigade of the Northern Air Force, under the cover of 40 J-5 fighters, carried out a four-hour non-stop bombing of the Soviet-Mongolian coalition forces in Saiyinshanda, inflicting huge losses on the Soviet-Mongolian coalition forces.

Although the Soviet-Mongolian air defense forces shot down 4 bombers, this result is simply not worth mentioning compared to the huge losses. In order to deal with the air raid by Chen Feng's subordinates, Zhukov took the risk and ordered the remnants of the Ninth Army of the Air Force to urgently take off and launch an air interception against the Northern Air Force.

However, as in the previous tragic order, 97 of the 117 Yi-16 fighters were shot down in less than half an hour, and the rest all fled with injuries.

On 7 June, according to the picture captured by the early warning radar, a large number of fighters came to Ulaanbaatar Airport and Zonmod Airport, and Chen Feng judged that reinforcements from the Soviet Air Force had arrived, so he decided to teach the Soviet Union an unforgettable lesson today. Soon an order to annihilate the Soviet Far East Air Force reached the Northern Air Force Command.

After receiving the telegram, Liu Nijia and others urgently held consultations, believing that the tactic of luring the enemy into the depths could be adopted to deal with the new air force of the Soviet Union, and that the success rate of this tactic was more than 80 percent after air deduction.

On the morning of 8 June, the Northern Air Force again launched a heavy bombardment of the positions of the Sainsanda Soviet-Mongol coalition forces with a bomber group, but this time the escort was reduced to 20 fighters.

At 8 a.m., 120 B10 bombers of the 8th theater of operations took off from the airfield of the second company. At 8:40 a.m., the plane arrived over Sainshanda and dropped bombs at low altitudes.

However, this time the Soviet-Mongolian counterattack was more violent, although the bomber group was overwhelming, but the Soviet-Mongolian coalition forces on the ground still fiercely fought back, and the Soviet-Mongolian coalition forces suffered heavy losses in the fierce battle for half an hour, but the Northern Air Force also had 9 bombers shot down.

However, just as the Northern Air Force was preparing to return home, about 200 new Soviet fighters suddenly appeared on the battlefield and launched a siege on the bomber group of the Northern Air Force.

However, at this time, the Northern Air Force was ready to return home, and as soon as the Soviet fighters appeared on the battlefield, Colonel Li Yunshan, who led the team, immediately ordered the 20 escort fighters to intercept the Soviet fighters in formation. The rest of the fighters immediately returned home. However, Soviet fighters pursued them relentlessly. Biting the tail of the B10 fleet!

However, what happened next surprised the Northern Air Force Command, and saw that the Soviet Air Force only divided into a fighter formation to entangle with the escort fighters of the Northern Air Force, and the other more than 150 fighters quickly caught up with the returning bomber group.

At this time, the atmosphere in the Air Force Operational Command was extremely tense, and the combat plan formulated by Liu Nijia and others was followed. First, the Soviet Air Force reinforcements were lured out with bomber groups. Then lead them to the ambush circle set up by the Northern Air Force in advance. The most reluctantly gathered and annihilated.

However, they did not fail to calculate that this time the Soviet Red Army did not dispatch the I-16 group, but a new type of fighter group. The performance of this new fighter was far stronger than that of the previous Yi-16 fighters, and it quickly caught up with the Chinese bomber group retreating south. As everyone knows. A bomber is a type of aircraft that is specifically responsible for bombing, and if a bomber is paired with a fighter, the result will be tragic, let alone a group of fighters.

"Li Yunshan, Li Yunshan, I'm Liu Nijia, I'm Liu Nijia, please reply when you hear it, please reply when you hear it!"

"Li Yunshan, Li Yunshan, I'm Liu Nijia, I'm Liu Nijia, please reply when you hear it, please reply when you hear it!"

After a shrill rustle, Li Yunshan's voice came from the speaker placed in the command hall: "Commander, I'm Li Yunshan, I'm Li Yunshan!" ”

"What's going on now, according to the results of the radar, have you been bitten by the Soviet fighter group?"

"Commander, there is a problem with Lao Maozi's fighter, it is not the Yi 16 we encountered before, but a new type of fighter that we have never seen before, this kind of fighter is very fast, we just flew less than 20 kilometers before they caught up, and now they are encircling us!" Fierce gunfire and cannon fire could be clearly heard in the air, and occasionally violent explosions could be heard.

Liu Nijia shook the microphone in his hand vigorously, and then continued to ask: "How many new Soviet fighters are there, what model is it, what are your losses, and how long can you hold out!" ”

"The Soviet Union dispatched all new fighters this time, about 220 or sober, the specific model is not clear, the appearance is very different from the Yi-16 fighter, and it is certain that it is not an improved version of the Yi-16. Our losses are so great that we can't count them, at least 20 were shot down, and the situation is not optimistic, and we will hold out for half an hour at most. Li Yunshan said.

"Bang" "Boom"

There was a sudden violent explosion in the speaker, and the piercing sound directly shook the officers in the command room dizzy, and it took a while for the boss to react.

"Li Yunshan! Li Yunshan! ”

However, there was no response from there, and a low and mournful voice came from the speaker after a few minutes: "Commander, I am Bai Haiyun, the deputy of the 2nd Regiment of the 4th Bomber Brigade, and the commander's plane has just been hit by Lao Maozi's fighter, and the body is disintegrating in the air!" ”

There was a dullness in the command room, Liu Nijia let out a long breath, let the grief and anger in his heart ease a little, and then said loudly: "Bai Yunhai, I order you to temporarily take over the command of the second regiment, and then take the bomber group to break through to the south, I will order the combat aircraft group to go to meet you!" ”

"Yes"

"The 1st Fighter Brigade was ordered to immediately take to the air to meet the bomber group, and the 2nd Fighter Brigade and the 5th Bomber Brigade went north to Ulaanbaatar to carry out air strikes on the Ulaanbaatar airfield of the Soviet-Mongolian coalition; At the same time, the 3rd Fighter Brigade and the 6th Bomber Brigade went north to Zonmod and carried out air raids on the Soviet-Mongolian Allied Zonmod airfield. It is still the previous principle of air raids, which only bombed military facilities and barracks, and it was strictly forbidden to drop bombs on civilian areas! Liu Nijia ordered loudly.

"Yes!"

Zonmod, joint command of the Soviet-Mongolian forces.

The news from the front made the Soviet-Mongolian joint command cheer, it has been more than a week since the start of the war, the Soviet-Mongolian allied forces are holding their breath from top to bottom, this battle is really too bad, they have never fought such a humiliating battle, especially in the face of the Chinese.

Zhukov was also extremely happy, not only because of the huge superiority of their air force in air combat, but mainly because he was proud of his judgment. He has always believed that in order to defeat the Chinese Air Force, it is necessary to mobilize the most advanced fighters in China from Europe to participate in the war, and he guessed correctly, so he will have today's victory.

The high-spirited Zhukov ordered the remnants of the bomber group of the Ninth Army of the Soviet Air Force to immediately rise into the air and carry out retaliatory bombing of the Chinese Army in Ergen. Zhukov believed that the Army, deprived of the protection of the Air Force, was nothing more than a group of moving targets waiting to be beaten.

However, less than half an hour after the Soviet Air Force took off, the ground command center received an emergency call from the air force commander, saying that they had been ambushed by the Chinese Air Force at an altitude of 4,500 meters, suffered heavy losses, and requested reinforcements.

Zhukov and others were shocked, but they did not expect that the Chinese Air Force would send a combat group to ambush the Soviet Air Force at the same time that its own bomber group was intercepted by the Soviet Air Force. What made Zhukov and others even more frightened was how did the Chinese know that they would send the air force to bomb Ergen, could it be that all this was a conspiracy of the Chinese?

In fact, it is no wonder that Zhukov and others are afraid, entirely because they do not know anything about this new type of equipment. Radar was definitely a new thing for the Soviet Union in this matter, and in fact it was only a matter of a few months that radar played a role in the war.

In fact, the study of radar dates back to World War I, during the First World War, when people in Britain who studied the long-distance transmission of radio waves noticed an incomprehensible phenomenon: there was often a pattern-like channel that appeared and disappeared on the screen. After much research, I finally figured out that it was a reflection of the posture of a bird flying high in the sky. Then it was further considered: if it was probing in the direction of the enemy, it should also detect the incoming enemy aircraft or airship, and this was the radar discovery.

Britain and Germany were at loggerheads, and London was suffering from Zeppelin raids, which were joined by German planes after 1917. Therefore, there are calls for the development of radar as soon as possible. At that time, Britain decided not to develop or manufacture a certain kind of military equipment, but a committee commissioned by the British government, which was composed of four prominent scholars, engineers, business and military representatives, two of whom were Nobel laureates.

On the question of whether to develop radar, three of the four scholars unanimously agreed, one named Lindeman, who proposed that money and materials should be used in more urgent areas such as the production of heavy aircraft, and Churchill, then the British Secretary of the Admiralty, also held this view, and as a result, the development of radar was stalled.

By the autumn of 1917, the air raids by German aircraft were becoming more and more serious, and in order to deal with the increasingly boiling public opinion, the British government proposed the use of radar air defense. After working day and night, by 1918, the radar was officially used on the battlefield, and under its guidance, it achieved the record of destroying dozens of German aircraft. This radar, also known as the "Lindemann radar", could only emit radio waves from the front, and was highly secretive in Britain after the war, and neither Germany nor other countries knew about it. (To be continued......)