A large amount of construction steel bars, plus high-standard concrete, have been quickly poured into the large pit that has been dug on the top of the mountain.
As the soldiers shape their shapes, they go deep into the ground three meters below the top of the mountain one by one.
The buried permanent bunker, which is about 5 meters long, has been built.
A direct hit from a howitzer would probably be blocked by the one-and-a-half-meter-thick reinforced concrete, plus a layer of two-finger-thick steel plate.
Although they are combat soldiers, they also have a little dabbling in battlefield engineering.
At least they can still build permanent defensive bunkers with low technical content.
Especially with Liszt's abundant material supply, without considering material consumption, they designed and built it to the extent that it could withstand direct fire from the 203 howitzer.
Centered on the top hill of Cave No. 5 at the cave base, this kind of bunker has been built on all eight hills within two kilometers.
In this complex mountain environment, as long as they grasp the commanding heights, it means that they also have the initial advantage.
Just like a jagged gear, the protruding points and connecting points are defensive bunkers with heavy machine gun firepower.
Let alone the attacking mountain light infantry, what can even heavy armored troops do?
In this world with abnormal technological development, Liszt did not have the habit of leaving a backdoor in good faith.
These defensive bunkers constructed by pouring water in one piece were really cylindrical.
In addition to the space at the bottom, there is a half-meter-deep tunnel four meters below the top of the mountain.
If you want to enter this defensive bunker.
I'm afraid it's also impossible.
The defensive bunker has four levels, including the shooting area at the top and the standby area at the second level.
The rest area in the third part, and the transportation and reserve area in the fourth part.
Because there is no passage into the bunker at the back, the entire bunker's access is entirely dependent on the half-meter-deep tunnel on the fourth floor, which is also an important channel for communicating with the outside world through the dug underground tunnel.
The power of the medium-sized excavator can easily break through the soil layer.
At the bottom of the hill three to four meters away, a width of about half a meter has been dug out.
At the same time, large sewage pipes are common in urban construction work.
It has also been placed in it, and after being refilled, it has also been used as a ready-made traffic tunnel.
Such a structure completely avoids the loss of the entire surface.
After retreating into the cave base, the outer bunkers also fell into the enemy's control.
After all, once communication can only be made internally, even after the entire surface is lost, the firepower points from the bunker can still be contacted through secret passages.
Whether it's replenishing ammunition or replenishing battle-damaged soldiers.
They are all very convenient and fast, and absolutely safe and secure.
The Soviet Union's numerical superiority and air superiority are inevitable for Lister.
Now that he has made up his mind and wants to build such a high-standard defensive bunker to reduce the pressure on the cave base itself, he must consider it in advance.
The result once one's own surface is occupied.
The secret passage is just one of them, a bunker with a thickness of more than one meter.
Four shooting holes have been drilled into the wall on the first and second floors.
It can satisfy shooting in four directions: front, rear, left and right.
At the same time, we cooperated with the bunkers on the surrounding hills to implement fire suppression and fire strikes to ensure that there were no blind spots in our own shooting area.
Even at the bottom of the hills and slopes of those bunkers, unsightly stones and slopes have been filled in to ensure that the firepower of the heavy machine guns can cover the foot of the hills along the shooting holes and even the woods in the distance.
Even inside the cave base, intense and detailed expansion work is already underway.
The Marines were also using pickaxes and pickaxes to quickly transform the inside of the cave.
Not only were they widening and deepening the cave, but they also began to excavate the inner walls of the cave toward the outside, forming half-meter-long holes.
Tunnel while near Mt.
A space of less than two meters was dug out on the sloping surface, just like a defensive bunker.
A narrow shooting hole was also dug out on the outside of the rock mass.
At the same time, steel bars and concrete were used to pour the entire space inside to form a Shooting positions based on mountains This is not just one.
The entire cave base, as long as it is connected to the surface, has excavated such a space.
At the same time, a stable space has been built with reinforced concrete to ensure strong firepower output.
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Liszt could not rely on defensive bunkers alone.
Even this cave base had to bear part of the firepower output, and even stronger firepower strikes.
The shooting holes inside the cave base are not only equipped with 2 Browning heavy machine guns with a caliber of 127.
There have even been 145 large-caliber heavy machine guns at several key nodes, ensuring that in critical moments of the defense line, powerful firepower can be produced.
The firepower caused the attacking enemy troops to feel the pressure and be forced to withdraw.
In the cave base, Lister also prepared some backward little surprises that had never appeared in this world for the Soviets who would definitely appear.
From the Call of Duty system, the Type 92 infantry gun used by the Japanese army on the battlefield of World War II has been slightly modified by modern technology.
This seemingly backward and useless weapon has no shortage of weapons against the enemy in the firepower system of the Lister Cave Base. of lethality The Type 92 infantry gun, which uses high-explosive bombs, can cover the enemy with firepower from a distance of one hundred meters to three thousand meters.
And whether it is a direct shot or a curved shot, it can be adjusted quickly, especially in the complex and undulating mountainous terrain, causing a fatal killing effect on any enemy who feels hidden in the anti-slope fortifications.
Although Lister never built bunkers and permanent fortifications, Lister had seen such strategic fortifications developed from trenches in military schools and in reality.
In Europe of this world, there is also the Maginot Line of Defense in World War I, which was even reactivated because of the closeness between the Soviet Union and Germany.
However, if you look closely at the Anchorage Defense Line, which also uses mountains as a bunker, you can see that How credible is this fortification.
Especially Liszt, who has memories of his past life.
The Battle of Songshan in Southeast Asia and the Battle of Iwo Jima in the Pacific were all mountain fortifications that could only be chewed down with human lives.
Even the United States, which had such strong military strength in its previous life, was still helpless in the face of Vietnam's underground tunnels and fortifications extending in all directions.
What's more, in today's world where conventional weapons are backward.
Everyone is busy and nervous, and also quietly waiting for the last moment to arrive.
Whether they can withstand the Soviet offensive or whether they will sink under the Soviet offensive depends on their efforts.
Although their numbers are pitifully small, they may not be unable to fight given their geographical advantage.
What's more, Liszt now has more than 400,000 points and can recruit marines at any time to replenish battle losses.
Their stamina is long.
As long as the Soviets cannot defeat them with one blow, as long as they are in a stalemate, relying on the cave base that almost hollows out the entire mountain, they may not be unable to survive, and then live better: