The sound of gunfire is an order, and the sound of cannon is a call for life; Soldiers can quickly dodge guns on the battlefield, only temporary digging pits, that is, the civil engineering work of individual tactics, this lesson, Lao Hei is also torturing everyone.

First of all, the single soldier bunker, that is, the foxhole, divided into lying posture, kneeling posture, standing posture three kinds, the first is a shallower horizontal type, the net length of the lying single soldier bunker is 170 cm (cm), the depth is 25 cm, the width of the front mouth is 180 cm, the width of the rear mouth is 60 cm, the cliff diameter is 30 cm, the left breast wall is 25-30 cm high, and the right breast wall is 10-15 cm high.

Lao Hei personally demonstrated and dug one, and then gave the time standard, 12 minutes, you must dig one, it doesn't matter if it's ugly, it's not to build a house, the time must be fast.

So a whistle sounded, everyone pouted their butts, brandished the sapper shovel, and dug desperately, Sangou dug the ground at home when he was a child, but compared to this, it was a completely different feeling.

Digging the ground is relatively casual, take a break when you are tired, there is no time limit, digging a bunker is different, that little time, it is not enough at all, and it is the time to, you have to dig out such a large bunker, it is really going to die.

Basically, not many people can reach the standard, so angry that Lao Hei yells, keeps asking everyone to continue, and then there are kneeling and standing single bunkers, which are deeper.

The kneeling single bunker is reduced by 80 cm, the cliff diameter is 30 cm, the mouth width is 90 cm, the bottom width is 70 cm, the left and right chest walls are 40 cm high, and the middle is 30 cm high. The standing shooting single bunker is reduced by 110 cm, the bottom width is 50 cm, and the cliff diameter is 65 cm.

I'll go, this workload is more than a little bit, cold-blooded old black, regardless of everyone tired like a dog, the standard kneeling position is 35 minutes to complete, and the standing posture is 55 minutes.

It's really going to kill everyone, Lao Hei is like a black-hearted contractor, holding a stick, walking around, and when the time comes, he starts to hold the stick, this ass is a stick, that ass is a kick.

He kept scolding: "Do you know what you dug up?" It is the pit of your life; If you dig deep, you will save your life, and if you want to cut corners, if you dig shallow, you will dig a grave for yourself and bury yourself. ”

"If you want to survive on the battlefield, dig hard for me, every time you dig one centimeter deeper, you have a little more chance to live, do you understand? Do you understand? Answer me, understand? ”

"Understood." Everyone responded.

"Louder, little ladies."

"Understood." Everyone roared in a hurry.

After several days of digging pits, Sangou slowly adapted to the skills and methods of digging pits, tried to avoid difficult to dig sections, and made full use of earthen embankments, ridges, ditches, and pits to reduce the amount of work.

But on the battlefield, it is the terrain that chooses you, not the terrain you choose, and when you encounter sand and gravel ground, hard board, etc., you have to dig, you don't have to choose, and the three dogs don't have to choose when they encounter the assigned place, no matter how good it is to dig or hard, there is no complaint.

In addition to bending down to dig a bunker, you also have to lie on the ground to dig, Lao Hei said that he just encountered the enemy's attack, how can he have time to dig slowly and logically, if you stand and dig, you will be killed a long time ago.

On the premise that there is no defensive task for the time being, you have to quickly dig a simple horizontal bunker on your stomach, the lower the body, the better, and the faster you dig, the better.

……

Once, Lao Hei urgently gathered everyone and ran quickly to a certain mountain position in the Purple Mountain, carrying the three dogs with equipment on his back, running with everyone all the way, so tired that he couldn't breathe.

Unexpectedly, as soon as he arrived at the destination, Lao Hei arranged to dig a personal bunker in a standing position, and the captains of each district divided their positions, each designated a location, and immediately excavated.

"50 minutes, I only give you 50 minutes, you have to dig your own personal standing bunker on the flat ground, and whoever is slow will eat me with a stick." Old Black roared mercilessly.

Everyone immediately nested their bodies, digging desperately with sapper shovels, and from a distance, the three dogs, like hundreds of marmots, were digging desperately and digging into the dust.

As soon as the 50 minutes were up, Lao Hei was like an excited big dog, carrying a stick, beating people everywhere, as if he thought it was very cool to beat people, almost no one in the team could be spared, almost everyone had been hit by Lao Hei's stick.

"50 minutes, I'll give you 50 minutes enough, you know, you wait until the enemy's first cannon sounds, you will be miserable, at most two more cannons to calibrate the position, the fourth cannon, will come to kill you, if you want to live, you have to speed up again, according to your current snail speed, all of you will be killed on the battlefield."

The old black scolded and scolded, but he still couldn't help but teach everyone some basic techniques, such as choosing the location of the excavation in a good place with a good visual range, which is convenient for observation and shooting, oblique fire and side fire, and together with everyone's bunker, form a crossfire network.

Another important thing is to conceal and camouflage, to deceive and confuse the enemy, such as digging some fake bunkers elsewhere, and camouflage the bunkers with shoveled turf or topsoil.

Otherwise, let the enemy observers see it, especially the Japanese army, and a phone call can attract planes in the sky and artillery in the distance, and a few cannons will even bombard these lumps into the sky with people, which is equivalent to digging a living coffin for yourself.

The last one is easy to maneuver, you can advance or retreat, it is best to connect trenches and traffic trenches, the veterans heard it, it was broken, this guy is going to torture everyone again.

As expected, Lao Hei drew lines for everyone's bunkers, and they had to dig trenches in some positions in front of the position, and the traffic trenches in the back had to be connected together, and they should be dug collectively in squads.

This amount of work is large, and the three dogs dug under the guidance and explanation of Lao Hei, and even used tools such as pickaxes and large round shovels to pull wood to strengthen the two walls and ceilings of the trench.

The trenches are dug very deeply, especially the trenches in front, and in some places they are deeper than people, but in the firing position, there are several steps dug and made, which are convenient for going up and down, observing and shooting.

Bunkers for light machine guns and heavy machine guns were added to the trench, a large semicircle was dug out, with gauntlets on both sides, and a space for machine gun brackets was reserved in front of the specified size, in which several people could stand, as well as ammunition compartments.

digging drainage ditches under the trenches and kicking away the exit of grenades, etc.; Lao Hei saw what everyone was digging, but it was not enjoyable, and then dug out a bomb shelter, a command post, a medical station, and even a kitchen and toilet in the traffic trench in the rear.

Your sister, are you going to move your family over to live? The three dogs were so tired that they couldn't stand it, and secretly scolded Lao Hei. But I have to admire Lao Hei, who knows so much and is so professional.

In order to defend against the enemy's heavy artillery, the front of the trench was reinforced with masonry, the internal breastwork was reinforced with wood, and the roof of the bomb shelter and command post was reinforced with several layers of wood, and a layer of wood and a layer of sand were interlaced on the ramparts.

Not far from the side of this defensive position, Lao Hei dragged everyone to make a few fake positions, which were very similar and were used to attract the enemy's heavy artillery.

Some mine positions are reserved in front of the false position, and once they enter a state of combat readiness, they can be buried immediately, and the lesson on laying mines will be discussed later, which is also a real and false mine array.

In addition to the combination and crossover of various firepower, the real defensive position can even attack the forward position of the false position and shoot the enemy who is attacking the false position.

It is also necessary to consider the supplementary materials after the collapse of the trench, as well as the internal replenishment lines, and more importantly, camouflage, as much as possible to camouflage as far as possible, and not clear from the air.

It seems that Lao Hei really wants to treat this place as a new home, get married and have children for the rest of his life......