The trenches are not only turning in a curve, but also digging a circular trench that can be hidden in an infantry squad every thirty meters. Even if nearly 10,000 people work together, it is not an easy task to complete them within 20 hours.

What's more, more than two rows of real field trenches across the Jiafu River are built more than 200 meters away.

Yes, the curved field trenches extending from Shouhuai City in the west to the banks of the Kingdom Military Academy were not used to block the enemy, but to withdraw from Xie Yunsheng's 48th Regiment who crossed the Black Hawk Imperial Army on the banks of the Jiafu River.

Under the threat of the Black Hawk Imperial Army with naval guns and aircraft, putting the army in an unblocked plain 12 miles away would almost kill the officers and soldiers. But with field trenches that can prevent artillery, it would be different.

Not to mention that the artillery could not accurately blow into a trench that was only 2 meters wide, even an ultra-low-altitude aircraft could not succeed so easily. Besides, I really think that the aircraft is invincible in the world? When it is less than 150 meters, the firepower of the light and heavy machine guns that concentrate fire is enough to make the aircraft riddled with holes.

The speed of the propeller aircraft is much slower than that of bullets. If it is put in the future, the jet engine with thrust is almost no need to fire the engine with ten tons. Supersonic speed can make people feel dizzy. Not to mention using a gun, you can stand up.

With this huge manpower field trench, it is enough to ensure that most of the infantry regiments who have fought the blocking can successfully withdraw their positions in Shouhuai City and Huangsu City. After all, the purpose of fighting the blocking on the Jiafu River is not to block tens of thousands of Black Hawk troops on the riverside, but to delay time and kill more Black Hawk Empires.

There are still three infantry regiments in the city, but they are not idle either. Each infantry squad draws two people and the company commander to familiarize themselves with the dense passages and exits in the underground pipeline networks in their respective defense areas. They must know the corresponding positions underground and on the ground and mark the corresponding positions with maps. Otherwise, they originally wanted to hit the Black Hawk Army's butt, but they took their brothers to the guns of the Black Hawk Army, which would be a big terrible.

Of course, in order to facilitate the officers and soldiers of each unit to fight the Black Hawk Empire from the exit, the exits and the buildings above were simply marked and explained by the officers and soldiers of the 43rd Army in Qiu Tongzhou dialect. But then, it is estimated that only the people of Qiu Tongzhou can understand it. Not to mention the Black Hawk Empire, people in other states will probably have to be numb after reading it.

For example, "A dog-beating a dog-like baby" means that the exit is very hidden, you can go out to fuck the Black Hawk Empire. For example, "blood thighs are poured into the clams", which means that the exit is a bit dangerous. If you want to go out, you have to be careful not to be obscene by the Black Hawk Empire. Such things are enough for the 43rd Army officers and soldiers who are 95% of the Qiu Tongren.

The buildings and lanes above the exit were named by these Qiu Tong people who had never read many books by famous mountains, rivers and rivers in Qiu Tongzhou. A small alley may be called "Jialing River", a two-story building may be "Emei Mountain", and an inconspicuous house may be "Qingcheng Mountain".

This led to the fact that the orders issued by the camp department directly through the underground pipeline public broadcast in the future are basically: "Second Company, take me back to Qingcheng Mountain after dark, the fourth platoon leader of the doggy, Jialing River is your defense zone, I will kill you if I lose it."

This made it very meaningful that he was commanding the Battle of Fangqiu Tongzhou here. Even the 43rd Army simply used this as a code name to mark the city defense map. The Lieutenant General of the Army also asked this question when he asked about the battle situation of each regiment, and even saved time to use clear text telegrams when the phone was blocked.

This made the Black Hawk Army, which had already invaded the city and tried hard to enter the 43rd Army's communication network, very confused! Are there so many mountains and rivers in the small Huangsu City?

Moreover, at Lin Li's suggestion, in order to prevent the Black Hawk Army from using poison gas to attack the underground pipeline network, the 43rd Army distributed all the few more than 2,000 gas masks in the entire army to the pipeline network, and distributed them by the commanders of each regiment according to the defense area, and at the same time expanded the air outlets. Fortunately, when the underground pipeline network was constructed, in order to prevent biogas poisoning, a large number of air outlets were designed. Unless the Black Hawk Army occupied the entire city blocked these air outlets one by one, it would be a delusion to fill the underground pipeline networks throughout the city.

Of course, if the Black Hawk Army can occupy the entire city and let them block the outlet, it will almost prove that the 43rd Army has all died in battle and their combat mission is over.

In addition to the officers and soldiers who were busy familiarizing themselves with the terrain and drawing maps, the three infantry regiments on the ground were not idle. They had to lay out the fortifications of the city walls on the second level of defense. The sandbag fortifications on the city head were actually not large in quantity. From the beginning, each infantry regiment did not intend to place many troops on the city walls.

Now is not the era of cold weapons. Hiding behind the battlements of the city walls and fighting cold guns can kill the Black Hawk Empire Army in large quantities. The howitzers of the Black Hawk Empire may not be so accurate to directly hit the city wall that is only more than 3 meters wide, but the Black Hawk Empire's infantry cannons are definitely powerful weapons for siege. Putting a large number of troops on the top of the city is to deliver vegetables to the Black Hawk Empire, so these colonels will not be so stupid.

Don't think that the Black Hawks won the victory in the north and the eastern battlefields is because their infantry are strong and their ability to defeat the Kingdom army again and again. That is because they have enough artillery. Perhaps their marksmanship, stinging skills and physical fitness are better than those of the Kingdom soldiers, but in terms of survival ability on the battlefield, the Kingdom soldiers of this period are really no worse than them, and even stronger.

The Black Hawk Empires, except for fighting with the Kingdom in Haicheng five years ago and in Qingning County four years ago, have not participated in the war for a long time. The Kingdom army has been instable for so many years, and the warlords of various states have fought each other for their own interests, but they are veterans who have experienced wars. Especially the Qiu Tongjun, from 1925 to 1935, there were constant disputes between the bosses of various factions, and it was common to fight and kill me. Although the intensity was far less than that of the current war, I learned a lot of skills to save my life on the battlefield.

There are many such veterans, and they are not as passionate as the army, but as the army to earn wages. For veterans, that is a job. They have done this in the past ten years. No matter who is in the army, they will use military pay to support the whole family.

It can be said that they are the prototypes of the first generation of professional soldiers in the kingdom.

The same is true for the colonel commander who has been promoted from the platoon leader and company commander. According to the actual situation, no matter how this battle is fought, it will be defeated under the disadvantage of military strength and firepower. However, the commander has ordered that even if the entire army is killed, he must complete the military order to block the enemy for three days and nights. Since he can't run away, he can only do it, but he can't die in vain. How could he say that he would rather drag the Black Hawk Empire to be the custody before he dies?

In fact, this is also caused by the seemingly contradictory personality characteristics of Qiu Tongren.

Patience is a characteristic of East Asian civilization, and the people of Qiu Tongzhou are typical of patience. On the one hand, this character was developed by them in the long-term struggle against the harsh natural environment. In productive labor, they rely on this spirit to "try to compete with the heavens" to show the heroic spirit of man conquering nature and not bowing to nature. But on the other hand, the people of Qiu Tongzhou who are used to living in a relatively superior natural environment have also developed a kind of contentment of being content with the status quo and being content with the situation. As long as the basic life can be maintained, they are generally unwilling to abandon their original lifestyle and life trajectory. Therefore, even if they are oppressed and bullied, most of them are "tolerance", enduring again and again, and even enduring humiliation.

The people of Qiu Tongzhou in the crisis of life and death have undoubtedly been aroused by the rebellion in their hearts. Under the command of the commanders of various infantry regiments, they actually began to dig up the ancient city wall of Huangsu City, which has been around for hundreds of years. They wanted to turn the ancient city wall with a height of six meters and a base of six meters wide into the first fortress, and build heavy machine gun fortifications in the city wall and place all the heavy firepower points in the city wall.

Although most of the blue bricks in the ancient city of Huangsu City have been peeled off, the city wall can carry hundreds of years of wind and rain without falling. It is not the blue bricks, but the soil of the city wall itself. When building the wall, the soil is mixed with glutinous rice juice. Perhaps it is not as good as the Tiefu Xiongnu built Wancheng, if the awl can fall into the earth wall one inch, then this section of the city wall is an unqualified project. Those who built this section of the wall have to behead their heads collectively, as strict and cruel as the people who built this section of the wall have to behead their heads. However, judging from the fact that a few iron picks have dropped some dirt, if the ancient city wall that has experienced hundreds of years of wind and rain has not encountered war, it would be no problem to stand on the southern land for two or three hundred years.

In other words, based on this as a fortification, it is absolutely no problem to fight a war with the Black Hawk Empire.

Nearly 5,000 people began to dig the wall around the ancient city wall of Huangsu City. According to the firepower design, a hidden military hole was dug a hundred meters or even dozens of meters to ensure that a firepower point can be placed between a heavy machine gun and two light machine guns. Although this firepower point has many dead corners due to the shooting boundary, it is definitely enough to pose a threat to most infantrymen who attempt to approach the city wall 50 meters away.

But the entire city wall is not hollowed out. The thickness of the soil layer above should be at least 3 meters. In the front, the thickness of the walls around the Black Hawk fire point shooting hole should be at least 1.5 meters to 2 meters. This can ensure that the fire point has sufficient survivability when facing close-range shooting of 70mm infantry artillery or 37mm war defense artillery. Although in order to increase the shooting range, the left and right width of the outer trumpet shape of the outermost trumpet at least one meter and the height reaches half a meter, the officers searched for iron sheets and steel plates throughout the city to give the shooter more protection. Unless the Black Hawk heavy machine gunner can be magical so that the bullet point is accurate to 0.5 square meters, the Black Hawk 38 type 38 rifle 6.5-caliber bullets can not easily kill the machine gun shooter.

As for the larger caliber cannons of the Black Hawk Army, if they can accurately hit a firepower point of only ten square meters away from one thousand meters or even two thousand meters, it will only be life. Not to mention those larger caliber cannons, naval cannons or aviation bombs, they are all powerful enough to destroy a section of the city wall, but the premise is that they can blow up the city wall with extremely accurate accuracy.

Many cities have been captured, but I have never heard of the walls being destroyed, even in the terrible era of hot weapons. The 43rd Army used this trick, don't say that you may not necessarily kill me, even if you can kill me, I have already let you shed all your blood before you kill me.
Chapter completed!