The air defense barrier mentioned in Tang Daokou is naturally an air defense fortification!

However, if Rostaff could visit this mountainous area in China quickly after moving forward a year, he would be surprised to find that the three air defense fortresses standing on the top of the three mountain peaks were actually a reduced version of the three air defense towers standing in the capital of his empire.

On the night of August 26, 1940, the Royal Air Force of the Empire carried out the first air strike on Berlin, which shocked and angry. He immediately ordered the strengthening of Berlin's air defense capabilities and personally drew a sketch of the air defense tower, and then handed it to his chief architect Sperl for implementation.

Sperer hired Friedrich Tams, a professor at the Berlin University of Technology, to be responsible for the design work. Tams designed two types of air defense towers, namely the G tower (combat tower) and the L tower (command tower).

The size of each G tower is approximately 70.5 meters x 70.5 meters x 39 meters, and the wall thickness is 3 to 4 meters. It is built of reinforced concrete. Each G tower can accommodate 8,000 people, while each L tower can accommodate 3,000 people.

On the G Tower, there are four corner towers, each corner tower is equipped with two 128mm anti-aircraft guns with a caliber, and a medium- and low-altitude defense system composed of a 37mm anti-aircraft gun, multiple 20mm machine guns and a 12.7mm heavy machine gun.

The L Tower maintains contact with the G Tower through communication equipment, providing it with information about the position, speed, height, etc. of enemy aircraft, and assisting the G Tower in precise aiming and shooting. Each two air defense towers will cooperate to form a complete air defense unit.

When Tang Dao was studying at the Army Command Academy, he had seen the surging firepower of the Germanic air defense tower simulated by a professor using models and optoelectronic systems.

In the words of the professor: In the era without missiles, ground-boring bombs and nuclear bombs, this kind of architectural and firepower design is a nightmare for propeller aircraft.

Therefore, in this time and space, even the Germans who created such a project were probably not as clear as Tang Dao. The design of half of them was crazy and the other half was a genius was so awesome.

In World War II in time and space, the German Empire and the bearded head of state failed, and even the German Empire's capital Berlin was captured, but the Berlin air defense tower was regarded as the last dignity and symbol of the German Empire.

Because they have never been captured! Just like the Sihang Warehouse during the Battle of Shanghai!

According to statistics, between 1940 and 1945, the Allied forces carried out 363 air strikes on Berlin and dropped about 45,000 tons of bombs.

The air strikes resulted in about 30,000 deaths, 120,000 injuries, and 125,000 buildings destroyed or damaged.

However, during this aerial massacre, Berlin's air defense towers remained standing, and with their powerful firepower and solid structure, they tenaciously resisted the Allied offensives.

According to statistics, three air defense towers in Berlin successfully shot down about 500 Allied aircraft.

The most famous one was on November 22, 1943, when the Eighth Air Force of the United States carried out a massive air strike on Berlin, sending 440 B-17 bombers and 500 P-47 and P-38 fighters.

This air strike is called the "Second Operation Schweinfurt", which is the first daytime air strike by the United States on the German Empire. The American cowboys hope to cause huge losses to the German Empire, but they did not expect to encounter tenacious resistance from the Berlin air defense tower.

The 128mm anti-aircraft guns and heavy machine guns of the Berlin Air Defense Tower launched strong firepower on the American aircraft cluster, causing serious damage to the American aircraft cluster.

In this air strike, a total of 60 bombers and 5 fighters were shot down, and 138 bombers and 26 fighters were damaged. The air strike is considered to be the worst air failure suffered by the Americans in World War II.

The Berlin Air Defense Tower not only performed well in air combat, but also had strong ground combat capabilities, playing an important role and had a significant impact in the Battle of Berlin.

They not only can counter Allied aircraft with anti-aircraft guns and heavy machine guns, but also use bazooka and mortars to deal with the bear's tanks and infantry. These air defense towers, like small castles, provided the Germans with the last shelter and a strong place to resist.

On April 16, 1945, the Mao Bear Army began a general attack on Berlin. They successively broke through the defense lines of the Oder and Nice Rivers and finally surrounded the city of Berlin. The Soviet army dispatched a total of 2.5 million men, 14,200 artillery, 2,450 aircraft and 1,500 tanks to participate in the battle.

The Berlin defenders had only 36 divisions, a total of 760,000 people, with 2,200 aircraft and 1,500 armored vehicles. They also included some semi-military organizations, such as the police, the Youth League and the National Commando. The Germanic Army was at a clear disadvantage in terms of number, equipment and morale.

However, in this cruel battle, the Berlin Air Defense Tower played an amazing role, becoming the most solid position of the Germanic army, causing huge casualties and troubles to the Mao Bear Army.

In order to capture these reinforced concrete buildings, the Mao Bears adopted various means such as 203mm heavy howitzers, rocket launchers, incineration bombs and explosive packs. However, even so, they were still unable to easily destroy these air defense towers. Some air defense towers even stood firm after the war and needed multiple blasts to be demolished.

According to data, during the Battle of Berlin, the Berlin Air Defense Tower successfully intercepted 32 Allied aircraft and caused more than 40,000 casualties to the Mao Bear Army. In comparison, the Berlin Air Defense Tower itself was only 7 dead and more than 20 officers or soldiers were seriously injured.

Tang Dao spent a huge amount of manpower and material resources to build three air defense fortresses that were nearly five times smaller than the Berlin air defense tower on the main peak of Zishan and two other peaks with an altitude of more than 400 meters.

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! Each air defense barrier is square, with a length and width of 20 meters. Because there is no need to hide civilians, the height of the fortress should be slightly shorter, about 8 meters. The hollow interior is mainly a passage, and the shells are mostly stored in underground warehouses, and the thickness of reinforced concrete is about 2.8 meters.

It is not as tall and majestic as the Berlin Air Defense Tower. Compared with it, the short and pierre air defense barrier is like a dwarf and a Titan carrying a giant axe.

But in fact, the wheel defense capability, the air defense barrier with slightly thinner thickness but a sharply reduced height is not much inferior.

The thickness of this reinforced concrete with high-grade cement was also tested by the Engineer Company with 100 kilograms of "cyclone explosives". The air waves burst out from the explosives cannot be destroyed, unless a cannon with a caliber of more than 200 mm is aimed at and bombarded with armor-piercing bombs.

In the same four corner buildings, two 40mm anti-aircraft guns were installed in each corner building. Around the corner building, six 20mm machine gun positions and eight 4-connected 12.7mm anti-aircraft gun positions were arranged on the platform protruding from the building.

Although the main function of the air defense barrier is air defense, there are also shooting holes in the middle of the building, and there are 37mm rapid-fire cannons, 70mm infantry cannons and 8 Maxim heavy machine guns that have been basically eliminated by the four-row regiment.

If the 20mm machine gun and 12.7mm heavy machine gun on the air defense barrier platform no longer aim the muzzle at the sky but downward, this air defense barrier will become a monster that can spray death firepower nets 600 meters away.

Even the air defense barrier located at the top of the peak can extend its maximum firepower strike range to 2,000 meters with its altitude advantage.

To put it bluntly, this completely pirated air defense barrier from the Berlin Air Defense Tower is the most fierce firepower on the Zishan defensive position, rather than the 28 150 howitzers hidden in the depths of the 3,000-meter mountain behind the entire defensive position.

For the sake of their own defense and the special terrain factors in the mountainous areas, these heavy artillery had to sacrifice the shooting boundary, resulting in many blind spots on the Japanese infantry positions approaching the defense zone. Their greatest effect was not to attack the Japanese infantry, but to deter the Japanese artillery, making them afraid to get close to within 12 kilometers of Zishan.

For the Japanese army, these super fortifications built on the peak took nearly half a year to be completely completed. The Japanese reconnaissance planes continued to pass by from high altitudes to take pictures of the terrain of the Zishan area. At that time, they were just a large construction site and a piece of ruins.

By January, when the main structure was gradually completed, the 40mm anti-aircraft guns under Cheng Tieshou Air Defense Battalion began to frequently attack Japanese aircraft that entered a height of 3,000 meters. The high-altitude strike at all costs forced Japanese aircraft to reduce their high-altitude reconnaissance in the Zishan area, which also led them to have no idea what kind of firepower monster would stand on the three ruins.

The huge group of Japanese aircraft gathered over about 50 kilometers away from Zishan and entered the battlefield from the direction of Taihang Mountain to Handan City. It is obvious that the first target of Japanese aircraft was not to face the front-line defense positions of infantry, but to try to find artillery, baggage and other troops hidden in the valley of the Sixing Regiment.

However, the height of Japanese planes is mostly maintained at an altitude of 3,500 meters, and it is impossible to find specific targets from altitude with the naked eye.

Therefore, the huge Japanese aircraft fleet is more about destroying possible targets with the carpet bombing with more than 50 tons of explosives it carpet.

Fortunately, Tang Dao had already guarded against this move of the Japanese army.

Five days before the war started, the prince and the southern Hebei Administrative Office evacuated the people in the Zishan area. Even if some villages were 4 kilometers away from the defense line, they were still evacuated.

There were 18 villages with about 25,000 people retreated into the Taihang Mountains 15 kilometers away under the organization of the administrative staff and militia.

"Order all fighter jets to drop bombs! The Chinese, tremble under the fire of the empire!" Miyano Masumi, sitting in a 97-heavy bomber, put down the telescope in his hand, and proudly picked up the wireless telephone in front of him to issue a military order.

Below the roaring crowd, I couldn't see anything else clearly, but the Chinese village was fully visible.

Although this civilian target is not on the tactical list of the Army Corps planning, as the captain of the 1st Flight Wing of the Army Corps and the highest commander of the bomber group, Miyano Masuke believes that destroying the Chinese villages should also be an important part of destroying the continuous combat capabilities of the Four Mountain Regiments.

This can not only use the tragic casualties of Chinese civilians to psychologically deter the Chinese people, but also make them lose their supplies from the village.

As for the issue of wasting the precious bombs of the Empire so much and being useless for the effective military targets of the Four Lines Regiment, Miyano Masashi believed that the tactic of finding targets with the choice of saving bombs was purely stupid and fucking open the door to stupid -- stupid.

What is the empire's biggest advantage over China is its huge industrial strength, so it should use raindrop bombs to flood all Chinese who dare to resist.

As long as you take over China's fertile land, you can have anything else. What does a little waste mean?

This round of bombing did not hit the military targets of the Four Lines Regiment, so what? At worst, you can just return and hang up the bomb and rework what happened just now.

You should know that in order to fight today, Duo Tianjun, the commander of the North China Front Army, asked the Army Base Camp to approve more than 300 tons of large and small bombs three months ago.

As long as there are enough bombs, they will be bombed in a carpet style and there will always be results.

Of course, Miyano Masasuke, who has the command of a huge fleet, was not too proud. He also remembered the warning that the Chinese had a large number of anti-aircraft guns that could threaten the air trip. They were all discovered by the brave aviation pilots with their lives.

This chapter is not over, please click on the next page to continue reading! So, even though the roar of the aircraft group seemed to tear the entire sky, the Japanese aircraft group still maintained an altitude of more than 3,500 meters.

Countless black spots fell from the belly and wings of the crew, and smoke columns rose from the hills and villages.

In the No. 2 air defense barrier covered with green vines and woven leaves camouflage nets, Cheng Tiexou held the telescope and stared at the black dots passing by him in the sky, as if he was blinded to the smoke columns and fire that could be seen in his eyes.

"Battery Commander, the enemy aircraft group is so dense, and the height is within the range of my 40mm anti-aircraft gun. As long as I fire, I am sure that 10 guns can fire quickly and five or six of them can be killed." Mo Songzi looked at the sky-summing smoke pillars rising in the valley opposite, and his cheeks were bulging, and his eyes were a little red.

At the foot of the mountain less than 1,000 meters away from the No. 2 air defense barrier, Mo Songzi had not yet entered the base before the air defense barrier.

It was a large village with a population of nearly 1,000 people. The people there were simple and kind. Most of them had hardly walked out of this mountain. Even the news of the Japanese came was only known after the war broke out for a long time.

They don't even understand why those gray military uniforms must fight the Japanese, but this does not prevent them from choosing to share the same hatred because the gray military uniforms are Chinese.

Since you say the Japanese are robbers, then our whole village will do its best to help you.

In order to build air defense barriers and tunnels, this village of 1,000 people sent 700 laborers. Except for children and elderly people with real legs and feet, almost all the staff were dispatched, regardless of men or women.

But this time, their home is gone.

The home built by the Taihang Stone for generations was turned into ashes under the bombs of the Japanese army.

Mo Songzi could completely imagine how sad it would be when the elderly who were carried by young people into the mountains returned and saw that the houses left by their ancestors had become white.

"Battery Commander!" Seeing that Cheng Tiexou didn't say anything, anxiety surged from Mo Songzi's face.

The fighter's opportunity is fleeting!

"Shut up!" Cheng Tieshou looked like iron, put down his telescope and looked at the most powerful company commander under his command.

"Not to mention the military orders of the regiment commander, just take down five or six Japanese planes according to your guarantee. But look at how many Japanese planes are there in the sky? Are five or six Japanese planes considered superficial? One of your special main air defense company attacks with all its strength, causing some skin trauma to the Japanese, and it is for a ball?"

Seeing Cheng Tie's temper, Mo Songzi wisely lowered his head and refused to speak.

"I know that you are thinking about how to explain to the young and old people in Zhujiashan, otherwise you will be sorry for the trust of the whole village.

But that's what you'll have to do. Now you are a company commander. There are hundreds of brothers under your commanders. If you weren't the squad leader and platoon leader who used to be led by dozens of people, how could you act voluntarily?" Cheng Tiesuo saw that Mo Songzi lowered his head but his eyes were still stubborn. He knew that his subordinate was feeling sorry for the village that was blown into ruins, and his tone also eased a little.

"Japanese aircraft are very alert and have always maintained a high altitude. Although our 40mm anti-aircraft guns are enough, they are easy to alarm the enemy. Once they come to bomb again, they will maintain an altitude of more than 4,500 meters, so we can only stare at and wait for the bombing.

We have to let them take the initiative to lower their heights, and even if they want to run, we can chase them and beat them up all the time.

The Japanese have also invested heavily this time. You can't not know the personality of the leader of the group. He set a 3,000-meter height limit, either he didn't fight, or he would have to beat him, and he would have to make the pain of a dog-dog.

"Battery Commander, I understand!" Mo Songzi nodded, but regret still flashed in his eyes. "That's right, seeing the Japanese crew posing in such a sexy position, I really can't bear to let him go!"

"Haha! Don't worry, the first wave made them succeed. With the Japanese's peeing nature, they will definitely put on a more enchanting position! By then, your baby will be more refreshing than in front of you." Cheng Tiexhou couldn't help laughing when he heard Mo Songzi's words.

"Then the battalion commander, did you ask the 4th Company and his team to fire a few guns, not to scare the Japanese, but to show that we are working hard to defend our own airspace?" Mo Songzi suddenly suggested.

"That's right, otherwise this is not like the style of our Four Corps!" Cheng Tie nodded and ordered. "The 1st to 10th gun positions of the 4th Air Defense Battalion, each gun is 10 rounds, give the dog's daily color to see, and the other gun positions remain silent!"

The Air Defense Battalion has four air defense companies under its jurisdiction. Each air defense company has 12 40mm anti-aircraft guns, 12 12.7mm quadruple anti-aircraft machine guns, 8 20mm machine guns, and 3 air defense barriers respectively enter three air defense companies, forming a triangle with a side length of about 4 kilometers in the entire Zishan area.

The 40mm anti-aircraft artillery squad and the 4th air defense company that did not enter the air defense barrier were distributed in the mountains in the form of artillery positions, which was regarded as a supplement to the air defense barrier's firepower.

A gun position is basically composed of a 40mm anti-aircraft gun and a four-unit anti-aircraft machine gun. The four-unit anti-aircraft machine gun not only makes up for firepower to low-altitude aircraft, but also has the effect of attacking ground. In conjunction with each anti-aircraft gun squad, it also has an infantry squad dedicated to defending. Even if there are a small group of Japanese troops attacking, it has enough confrontation capabilities.

The gun positions from 1 to 10 are 10 40mm anti-aircraft guns that attack the air. The 10 guns and 100 flower grenades with delayed leads exploded into the air.

Caught off guard, thick smoke came out from the tails of three Japanese aircraft!

"Each squadron is lifted, and the distance between stand-alone machines is widened!" Miyano Masasuke gave a calm order.

Picking up the telescope and looking at the mountains that had been filled with smoke. Feeling the shock of the fuselage caused by the air explosion of the shells, Japan's Aviation Nakasa's eyes were not only not afraid, but more excited.

According to the crazy gunfire density of the Chinese just now, it will never be higher than 12 cannons that can fire at an altitude of 3,000 meters.

This is not much different from the predictions of the Imperial Intelligence Department, and this should be the strongest level of air combat for the Four Lines.

Compared with ordinary Chinese troops, this is already very strong.

But unfortunately, the strength is not enough to face the Imperial North China Front Army Army, which has been dedicated to it!

Japan's Aviation Nakasa is now suddenly looking forward to the next round of bombing.
Chapter completed!