Just as the special service team was seizing the time to rest, in another fortress building No. 41 not far away, the defenders were engaged in a fierce battle with the insect swarm.
Building No. 41 is located in the middle of the northern line and belongs to the third line of defense of the northern line.
Earlier today, the fortress building blocking the front of Building 41 fell into the hands of the swarm, and the swarm gained a springboard to attack. From that moment on, Building 41 became the front line facing the swarm.
The defenders in the building have long been prepared for battle, and all officers and soldiers are in full array, especially the underground passage leading to the front, which is the top priority in defending against the insect swarm.
The insect swarm moved very quickly, and soon found the underground passage leading to Building 41. A small group of giant insects approached Building 41 through the underground passage, and conducted a small-scale fire reconnaissance.
The cameras arranged in the underground passage accurately reported the movements of the insect swarm to the defenders. When the insect swarm approached the exit, the defender was stuck in time and threw several white phosphorus grenades directly into the tunnel.
The dark tunnel suddenly became phosphorescent, and there were burning flames everywhere.
Most of the attacking insects were killed or injured, which was a credit to the defenders. The few giant insects that escaped the disaster quickly retreated, and the insect swarm's testing came to an abrupt end.
The swarm was unwilling to fail and quickly organized a second round of attacks.
This time the bugs sent out the most classic giant bug tactical combination, that is, the beetles were in front, and the springtails and stinging bugs followed.
If the size of the tunnel hadn't been insufficient, the Insect Man would have had to stuff the Heavy Light Insect into the tunnel as well.
The defenders were still waiting with white phosphorus incendiary bombs, but the giant beetle was covered in white phosphorus and continued to charge forward regardless!
This thing has a thick carapace, and no matter how powerful the white phosphorus incendiary bomb is, it will take a while to burn through the insect shell.
The defenders saw how this could work. If the giant beetle rushed out covered in white phosphorus, there would be no need to fight this battle.
So the commander gave an order, and the fire-breathing soldiers immediately opened fire on the tunnel, and a fire dragon instantly penetrated the tunnel.
Now, no matter how much the giant beetle endures the fire, it can't withstand the flames all over the tunnel - even if the giant beetle's shell can withstand it, they still have to breathe, right?
The fire in the tunnel was so intense that all the oxygen was burned out, and the giant beetle couldn't even think about suffocating it.
What's more, the air in the tunnel is heated by flames, which can reach 800 degrees instead of 1,000 degrees. When such hot air is sucked into the stomach, the trachea and other things are cooked on the spot.
Moreover, the bugs' carapace could not withstand the high temperature. Even though the flames in the tunnel only burned for a few seconds, all the bugs inside were definitely dead.
Twice in a row, the insect swarms were easily blocked. The soldiers all said that it was easiest to fight the insects in the tunnel!
However, ease is only relative. Neither white phosphorus incendiary bombs nor flamethrowers are such safe weapons - the smoke produced by combustion of the former is poisonous; the latter not only consumes a large amount of oxygen, but will generate carbon monoxide once the oxygen is insufficient.
Directly threatening the lives of soldiers.
The defenders were well prepared for this, and every soldier guarding the tunnel was carrying a high-pressure gas cylinder.
The flames destroyed not only the giant insects, but also the monitoring equipment placed in the tunnel. But this was just a small trouble. It could be solved by sending a few drones into the tunnel after the flames extinguished.
There was nothing combustible in the tunnel, and the flames only burned for a few minutes before slowly extinguishing. However, the high temperature left by the combustion still remained in the tunnel, and it took some time for the temperature to cool down.
After waiting for more than half an hour, the temperature in the tunnel finally returned to normal, but the defenders were surprised to find that the insect swarm was actually honest and had no intention of launching an attack.
The soldiers were surprised that the bugs still had memories?
They know that aliens rely on bugmen to command the insect swarm, but in the past, the insect swarm always hit a wall and never looked back, regardless of whether it was under the command of bugmen or not. Why is it different today?
The commander of Building 41 was very alert. He immediately realized that something was wrong and immediately ordered several soldiers to listen to the sounds underground.
The defenders did not have special listening equipment, but there were several "ground tanks" dedicated to listening to sounds on the first floor of each fortress building.
The so-called underground tank is a water tank embedded in the ground. Anyone who has watched "Tunnel War" must know this thing.
Although the ground tank is indeed a bit soily, it is not the point whether the method is soiled or not. The point is that this method is effective. As long as there are insects digging holes in the ground, you can hear some movement. Moreover, when several ground tanks are combined, it can still be heard.
Can roughly distinguish the direction of sound.
The soldiers soon heard the sound of the insects digging holes, and the commander immediately concluded that the insects were digging a new tunnel leading to Building 41!
He knew the general direction of the tunnel, but he couldn't tell where it was, let alone where the bug planned to make its exit.
To be cautious, the commander immediately ordered the soldiers to evacuate to the second floor.
However, evacuating does not mean giving up. After the soldiers left the first floor, they exploded the floors at several key locations on the second floor. One of the points was directly above the tunnel. As long as the bugs dared to go through the tunnel, they would definitely burn it without discussion!
Probably the insect people also knew this, so even if there were no guards in the tunnel, the insects would not leave. After about twenty minutes, the floor in a corner of the first floor was lifted, and then a giant insect came out.
This place happened to be a blind spot, and this scene was not discovered by any of the defenders.
Then the exit expanded, and more giant worms came out of the holes, and soon hundreds of giant worms gathered.
In order to accumulate strength, all the giant insects are waiting here. If there is no room, they will pile up one by one. They would rather squeeze in than get out.
It wasn't until the room could no longer be packed that the swarm of insects rushed out like a flood from a breach. However, as soon as they entered the corridor, they were discovered by the defenders monitoring the corridor.
The soldiers on the second floor immediately opened fire and threw grenades down for free, blocking the giant insect in the corner of the first floor.
But the insect people are not vegetarians. There are several such exits on the first floor. By the time they discovered this, the swarms of insects swarming out had already occupied the first floor.
If the flamethrowers hadn't guarded the passage between the two floors, the insect swarm might have already invaded the second floor.
It is easy to block the insect swarm before it enters, but it is difficult to fight once it enters the first floor. The commander made a prompt decision and ordered the spiral staircase to be blown up. Everyone resisted step by step and tried their best to eliminate the effective strength of the insect swarm.
The resistance of the defenders was very tenacious, and the swarm of insects attacked several times with no results. They simply tried the same old trick and found a few remote corners to avoid the defenders from digging through the ceiling, thus successfully entering the second floor.
The construction standards of the fortress building are indeed very high, but no matter how strong the floor slab is, it cannot be as strong as the outer wall.
The insect swarm that suddenly rushed into the second floor made the defenders very passive, and the defensive deployment was directly disrupted. The soldiers tried their best to block the insect swarm, using more than one-third of their casualties to block the insect swarm, giving others time to retreat to the third floor.
