Dong Ku's army moved forward three kilometers away, and was stationed in front of the destroyed artillery positions of the Japanese army, and all the tunnels had been cleared, but in order to prevent the Japanese from sneaking in and sabotage, all the bunkers to be stationed by the army were carefully cleared, and sentries and mines were laid in those tunnels.

At this time, it is impossible for the army not to keep warm, so these Japanese bunkers solve the problem of accommodation for the army for Dong Ku, so that the soldiers will not be forced to carry in the cold, and they can make a fire and cook in the bunker.

The battle ended before dawn, and the advance of the troops was useless for two hours, and the control of the large craters that had been blown out was completed at dawn.

The soldiers who had been fighting fiercely for half the night entered the Japanese tunnels to rest and treat the wounded, but the attack did not continue.

It's not that Dong Ku doesn't hurry up the attack, but the number of liquefied gas tanks is difficult for Boa Zheng to fully blast in the depth of the next ten kilometers of tunnels, he urgently needs the production of cylinders, needs to fill gas, as long as he starts to attack, he can't stop, after all, those tunnels are connected, the former sold and strangled the Japanese army, and the Japanese army can reinforce along the tunnel, and Dong Ku can't let the soldiers risk being injured by poison gas in the tunnel. As for blocking the Unicom, the liquefied gas is not enough to blow up all the tunnels, and the concentration cannot be reached.

Here in Harbin, the production of cylinders has been started overnight, and those original workshops have basically stopped production, after all, the promotion of this new thing has not yet reached a certain level, but this time, all workshops have begun rapid production, even the painting is saved, and the pressure test is qualified to start filling gas.

More than a dozen workshops are operating nervously, and it is expected that the amount of one day, together with the remaining before will be able to meet the needs of the attack, that is, to stop the attack for a day.

Although this gave the Japanese army a chance to breathe, but. What do you think the Japanese army can conjure? Trench warfare has already been carried out, they do not have facilities on the ground, there is no air defense, reinforcements on the ground is a joke, all the battles are concentrated in the trenches. And they probably haven't figured out how to blow up their tunnels here, and how can they prevent it?

On this night, the Japanese army was really ants on a hot pot, and the well-designed tunnels were easily destroyed, so that their original plan to strangle the advance army here failed, and their self-conceived absolute defense line was broken, which meant that they would lose the ability to control the war and were doomed to complete defeat.

All the top brass stayed up all night, except for concentrating their forces on the bombed-out section of the front. In the midst of the inability to rescue that section, we are also studying how to respond to the attack of the advance army.

After some discussion, they finally decided on one thing, which was to blow up the tanks with human bombs, so that the intruding tanks would be blown up by the approaching soldiers without the cover of the infantry.

As a result, after the calculation of various powers, the use of explosive packs and cluster grenades was the first choice. The explosives packs were quickly made and sent into the pit in batches overnight.

At the same time as attacking on this side. The positions behind were also tense and busy, and the holes that were covered by the mud were frozen again because of the cold weather, and the Japanese had to open these holes.

In order to achieve the purpose of the surprise attack. After the Japanese army laboriously cut out these tunnels, they left a thin layer on the ground to prevent the helicopters overhead from discovering and blowing up the mouths of these tunnels, which were freezing in the cold. They're going to have a lot of manpower to pick up meetings.

In order to avoid the loss of tanks, they adopted the method of helicopter monitoring, and all the staff rested, cleaned up the materials that could still be used in the tunnel, and transported them to the rear.

Under the hovering of the helicopters, no one knew the movements of the Japanese troops underground, and gas canisters were constantly entering the various attacking units.

A new type of liquefied gas tank also came out. This is half the size, that is, the three-kilogram liquefied gas tank used in later generations, and part of it is designed in the position of the hand to install the bomb, so that the amount of explosives does not need to be large, as long as a pile of gas canisters can be detonated by one or two.

On this day, in addition to the nervous preparations, the battlefield was surprisingly quiet, except for the helicopters hovering in the sky unscrupulously and monitoring the Japanese troops not reaching the ground, the troops of both sides could not be seen on both sides of the bombed-up tunnel, which formed a strange quiet atmosphere in this area full of death.

Dong Ku and the others also reorganized the attack plan, formulated a more secure method, and canceled the previous plan of risky breakthrough, after all, the remaining tunnel position is still more than ten kilometers, and no one dares to guarantee whether the advancing tanks can come back.

They took into account all the problems, including the enemy's method of blowing up tanks with suicide bombs, including the tunnel defense adopted by the Japanese army at the rear, specifically attacking weakly defended infantry vehicles and armored vehicles.

The night was still quiet, except for the constant lights of the cars in the distance and the allocation of supplies, there was no fighting. Dong Ku also did not carry out air strikes on the Japanese army, after breaking through this position network, air raids to keep up with the ground troops is the king, or not just to consume the opponent's materials and personnel, which is of little use to the current advance army.

The production of liquefied gas tanks fought for a day and two nights, and the number of tanks basically met the needs of the offensive in the early stage, and the subsequent production continued in the battle, and the transportation was not far away, so that the supply could be guaranteed.

The advance army did not attack and the Japanese were confused, but they were happy to have this buffer time, and they had to make full preparations, including reinforcing the defenses of Changchun.

The sky was white, all the soldiers had finished breakfast, and the artillery began to bombard the Japanese positions.

The loud banging sound continued, and the Japanese army did not react to it at all, they all enjoyed the right temperature in the tunnel, and there was no other way to endure the strong artillery bombardment of the advance army.

The shelling lasted for half an hour, and the artillery fire in the direction of the main attack was extended to strike in depth, and the offensive began.

As soon as the artillery bombardment of the advance army was extended, the Japanese troops in the tunnels went into the narrow tunnel exits to clear the blown up exits, and the Japanese troops repeated the resistance of the previous day in the bunkers, waiting for the infantry vehicles to approach at the firing ports, and bombarding the infantry vehicles with iron fists to block the approach of the advance troops.

This time, the tanks were aimed at one of the main tunnels with absolute superiority, and thirty tanks and five infantry vehicles were concentrated in front of this fundamental bunker. After the tank blew up a hole in the bunker, it did not rush to attack, but dug a hole in the bunker at a distance of thirty or forty meters, and carried out high-explosive bombardment in the bunker, making those Japanese soldiers hiding miserable, although not every fighting room was blown up, but the explosion of the shells in the cement bunker was enough to stun those Japanese soldiers next to them, no matter how bad it was, the ears were buzzing, dizzy, and the reaction was slow.

It was at this moment that the Japanese counterattack began.

In the tom tom sound, the fire holes in those tunnels were not iron fists, but smoke bombs.

The shells hit the ground, the smoke filled in an instant, and in just a minute or two, the battlefield was covered in smoke.

In this regard, the previous method of the advance army was to use flames to spray out the isolation zone to prevent the Japanese troops from approaching and blasting without the supervision of the infantry. However, it is difficult to have a good solution in the face of smoke, because the flame will detonate the liquefied gas in advance, resulting in the concentration of liquefied gas in the tunnel in the blast cannot be reached, and the power is not enough to clear a section of the tunnel.

"Matrix Defense! Machine gun strafing!! ”

Seeing the smoke rising, this side also reacted quickly, and the armored vehicle that stayed on the side of the pit entered the smoke along the pre-paved road, and then, the machine gun clicked, according to the angle, shot at the ground around the tank, and implemented a barrage blockade to ensure that the infantry vehicle was close and carried out the tunnel blasting.

In the smoke, there was a loud bang from time to time, and with each explosion, a ball of fire dispersed the smoke of that area, so that the almost blind tank could proudly see the situation in that area.

However, the exit of the Japanese army was not sure where it was, and with screams and explosions coming from time to time in the smoke, there were still Japanese troops approaching the tanks.

A tanker lifted the hatch and carefully guarded the Japanese with a machine gun on it. In the infantry vehicle, fighters are also separated to approach the tank and provide protection for the tank.

Suddenly, the tankmen and four fighters heard a frantic shout.

"Long live the Emperor!!"

Immediately, I saw a figure rushing towards me in the smoke.

Without hesitation, the tanker pulled the trigger, and with a click, the bullet hit the figure mercilessly, stopping him less than five meters in front of the tank.

But before they could breathe a sigh of relief, there was a loud bang, and the fuse of the explosive bag held by the killed Japanese soldier came to an end.

The furious shock wave caused the two fighters to not even react, and they were violently slammed into the tank and then slid down.

The tanker was also not spared, and was stunned in the explosion on the hatch.

The shock wave has not yet dissipated, and there is a long live emperor, a figure staggered over, and at the moment when the two fighters on the side have not yet made a defense, they spread the tank with the explosive package that has been ignited, and then, with a loud bang, the side armor of the tank was blown out of a big hole, and then the shell inside exploded, and at the same time, the flames jumped at the same time, and the huge earthquake of the tank appeared alive, and the surrounding soldiers who were protecting the tank were lifted away.

"Infantry vehicles retreat !!"

The violent explosion caused the traitors next to him to see what was happening there and shouted one after another.

The infantry vehicles were already approaching the tunnels, and before they could get out of the vehicles to blast them, the smoke rose, and then the Japanese attack began. After receiving the warning, they did not turn around, but fell backwards in place.

In such a situation, without the defense assistance of infantry, tanks and infantry vehicles are very dangerous, and once they are approached by the Japanese army, it is inevitable that they will be blown up. (To be continued......)