The earth-shattering explosions came one after another, and the first artillery positions of about five kilometers of the Japanese position were destroyed one by one, and the violent explosion completely cut off the entire position from the middle, and it no longer matters how many Japanese troops were killed or wounded, but the important thing is that the Japanese army completely lost contact with the rear five kilometers in front at this time.

With the explosion, this fracture continued, less than half an hour, when the Japanese position was no longer snow-white, everywhere was pitch black, the entire defense line and the Tumen area, the underground communication was all blown up, reinforced concrete ridges, not to mention that the people nearby died, even if they were not dead, the collapsed concrete did not mean that they were dug up, they became trapped beasts.

The loss of communication with the front line made the Japanese army panic, and the plan was perfect to strangle the Japanese army, but because of the artillery position in the middle, the Japanese army about five kilometers from the front line fell into a desperate situation and became a trapped beast.

"Open up the connection with the front!! Hold the tunnel at the front and wait for support!! ”

Umezu Mijiro was no longer calm and yelled at the order.

Following his order, within ten minutes of the end of the explosion, groups of Japanese troops quickly poured into the distant tunnel, running, reinforcing the blast area, treating the soldiers who were injured along the way, and dragging out the dead bodies.

The Japanese army never imagined that the hoarding of a large number of shells was convenient for holding on and for providing forward fire support, but it became their own shackles, allowing the advance army to have such a large amount of explosives, blowing up the front and rear communications, and in the violent explosion, more than 10,000 people were killed and wounded, which made the entire defense a crisis.

Dong Ku had already come to the front line with the commanders and fighters at this time, he looked at the gray sky in the distance in the telescope, and asked without looking back: "The Japanese position has been cut off, let's talk about it, in addition to the battle for the tunnel, is there any good way?" ”

Zuo Boyang has been thinking about it for a long time. He was originally a staff officer, and he was the first to speak: "I think this battle must be a battle for the tunnel, such a powerful explosion, there is nothing left of the Japanese army's tunnel connection part, and the Japanese army in the previous section is already a trapped beast, but." According to the description of the soldiers who entered the tunnel, the Japanese army in the tunnel still adopted the fortress design, and the intricate interception points were designed in the tunnel, which was easy to defend and difficult to attack, and the casualties were definitely large, but there was no other way, we did not have enough explosives to blow up these tunnels section by section, so that the explosives could not be solved by a few tons. ”

Sun Tao put down the binoculars and said: "The ground is the only way for the Japanese army to move away. I suggested that when the dust and smoke cleared and the fog disappeared, the ground could be blocked by planes to avoid casualties caused by the blockade of artillery positions behind the Japanese army and block the retreat route. ”

"The little devils are now studying how to defend, they have food and supplies in the tunnel, and they don't know the situation on the ground of the tunnel. With such visibility, the Japanese army will not go up to the ground. So I think it's safe to fight in the streets. ”

"Liu Zhong is right."

Dong Ku put down the binoculars and said: "In such a violent explosion, the Japanese army will not worry about running to the ground, they will stubbornly resist by hitting the complex tunnel, as for how to attack, not only reduce casualties, but also be able to quickly strangle." The only thing that can be utilized here is air. ”

Air?

Everyone's eyes turned to Dong Ku, not knowing how to use the air.

Dong Ku turned around and sorted out his thoughts and said, "There should still be people who remember Erlong Mountain, Hutou and Dongning Fortress." ”

"Remember, the fortress is divided into the main tunnel and countless branch lines, and the place where the attack is blocked cannot be passed head-on. One machine gun is enough to seal a straight road tens of meters long, the grenade is ineffective, and the grenade is difficult to collapse the corner in front of it in a short time, if the captain hadn't used the ventilation duct to put poison gas in, we really wouldn't have been able to take these fortresses at that time. ”

Junko said with palpitations.

Shunzi's words made Zuo Boyang seem to understand what Dong Ku meant, so he asked, "What does the captain mean by using incense?" ”

Dong Ku shook his head, "That's a good way, but the area here is too big, and the remaining incense in my hand is not easy to do at all, plus the only two-thirds of it has been used in Shandong, and now it's too late to make it, and it is difficult to collect raw materials in ten days and a half months, and we don't have time to wait for raw materials." ”

The incense can't be done, what Dong Ku said is related to the air, so everyone is a little confused, and they all look at Dong Ku and wait for him to reveal the following.

Dong Kuzhi said that everyone's understanding of scientific and technological phenomena is still very vague, so he said directly: "The tunnel is a closed environment, the Japanese army must establish a perfect ventilation system, if you guess correctly, there will be ventilation hubs every other section of the tunnel, there are two plans, one is to use the flame to burn and drain the oxygen in the tunnel, suffocate the Japanese troops in the tunnel, and the other is to find these ventilation hubs to destroy, so that the closed tunnel has no oxygen, even if there are follow-up reinforcements to reinforce this area, it will not be able to stay because there is no oxygen in the tunnel, so, There is no need to worry that the Japanese army will have secret doors and secret passages to return to the tunnels occupied by us, and cause casualties to the soldiers inside. ”

"Good way!"

Everyone's eyes lit up. This fire attack can completely eliminate the hidden dangers in the tunnel, so that the Japanese army can not recapture the tunnel due to the lack of oxygen.

After Dong Ku finished speaking, he picked up the phone and connected to Harbin, and asked Harbin to urgently transport diving oxygen equipment, that is, oxygen tanks, for offensive use.

The battlefield slowly quieted down. The Japanese desperately dug in the rift zone and even used explosives, but progress was slow. The Japanese troops at the front did not move, they were already prepared, although the road was cut off from the back, but it still maintained its original state, there were a pair of eyes staring at the outside in the first layer of the tunnel, as long as the enemy entered, they would quickly drill out of the anti-artillery hole on the second floor, and inflict heavy damage on the enemy, just like blowing up those armored vehicles and infantry vehicles.

The radio station can still work, and they can also contact the rear, although they know that they have entered the place of death, but it does not delay their confidence in fighting to the death. Here, in their opinion, even if they are cut off from the rear, it is still the place where the enemy is buried, and they will not have any problems holding on for a month.

Time passed quickly, the speed of the helicopter was very fast, and hundreds of transport planes quickly sent oxygen tanks to the front line, and then distributed them to the commandos.

Everything was ready, Dong Ku waved his hand and gave the order, and the offensive began.

As one order after another was issued, the battlefield, which had been silent for more than an hour, was noisy again. The cannonballs whizzed down on the frozen earth, and then there was a loud bang.

The slow movements of the Japanese soldiers who observed were naturally shocked to death in the observation position, but most of the Japanese soldiers jumped into the anti-artillery hole on the second floor of Lecong, and curled up in a ball in the huge earthquake, enduring the shelling.

As the Argi was broken, the tanks approached the shelled area one by one, waiting for the order to attack. Their task was to open bunkers in red and prepare for the next attack.

The shelling came to an abrupt halt half an hour later. One by one, the tanks roared straight to the target, and before the Japanese troops in the tunnel could drill out of the second floor, they had already selected the designated positions one after another, and then at a position of thirty or forty meters, they bombarded a fixed position of the bunker in front, and lifted off the frozen soil that the shelling could not completely lift, revealing the concrete bunker inside.

During the artillery bombardment, the Japanese iron fist dragged the tail wing and crashed into the tank, and then, with the sound of a boom, the smoke of gunpowder immediately enveloped the tank.

But in the smoke of gunfire, the shelling continued, fixed position, no need to aim, just fire.

When the smoke cleared, the Japanese army helplessly found that the tanks there were still bombarding, and they didn't take this iron fist seriously at all.

This news shocked the Japanese high-brass, they knew that these tanks were ineffective, but they still did not give up, thinking that the tanks of the advance army still had weak armor positions, and they had to find and find a way or position that the iron fist could penetrate.

However, the iron fist hit many parts of the tank, but could not cause the slightest damage to the tank, obviously, the iron fist was completely ineffective.

They're going to blow up the Yanati and do an internal blast or go into the inner street fight!

The Iron Fist was ineffective, and was subjected to machine-gun fire from the tanks, making the open firing ports inoperable, but allowing the Japanese to conclude that the enemy was going to blow up the tunnels and enter the interior.

"Attention all units, enter the pit blocking position and prepare for battle!"

The horns sounded in the tunnels. This is the most advanced intercom system in the Japanese tunnel, which allows the Japanese troops in the tunnel to move in unison.

The Japanese gave up the idea of blocking the invading enemy, and only a few Japanese troops remained in the bunkers facing the front, waiting for an opportunity to attack the attacking infantry or armored vehicles and infantry vehicles, and observe the enemy's movements to provide specific information to their comrades in the tunnel.

The shelling continued, and three or four shells from one or two tanks finally lifted the frozen soil of one bombardment point after another, revealing concrete bunkers.

Seeing the bunker exposed, one of the regimental commanders sitting in the tank roared and ordered: "Firefox enters the attack position, blocks all firing ports where you can use an iron fist, and covers the approach of infantry vehicles!" Tank armor-piercing shells ready, blast open bunkers, put! ”

In the midst of the roaring explosion, the Spitfire tank that had stopped in the distance galloped forward, quickly entered the firing position, and under the watchful eyes of those observation posts, the fire dragon spewed out, shooting at those positions where the tanks could be seen.

Flames burst into the sky, and the firing ports were instantly covered in flames, leaving the few observation posts to howl miserably and be surrounded by flames.

The sea of fire formed in a matter of minutes, and the scorching temperature of the flames turned the area into summer, making the cold no longer cold, and at the same time, the bunkers that could hold off the infantry vehicles were obscured by the flames, losing the effect of blocking and intercepting.

At the moment when the flames had just risen here, a whimpering sound was heard in the sky, and pieces of shells fell on all the Japanese positions five kilometers away, preventing the Japanese troops from still having artillery positions to intercept and shoot.

A violent explosion in the distance allowed the infantry vehicle that had entered the position to reach the position of the exploding bunker unharmed in the same engine reserved by the sea of fire, and then the soldiers in the vehicle wore gas masks, carried oxygen tanks, and carried flamethrowers, and after throwing grenades into the hole, they rushed in. (To be continued......)