One Thousand Seven Hundred and Twenty-Nine Melee

Just as the special service team was taking a break, the defenders in another fortress building No. 41 not far away were fighting fiercely with the swarm.

Building No. 41 is located in the middle of the northern line and belongs to the third line of defense on the northern line.

Earlier today, the fortress building in front of Building No. 41 fell into the hands of the swarm, and the swarm gained a springboard for attack. From that time on, Building No. 41 became the front line facing the swarm.

The defenders in the building had already prepared for the battle, and all officers and soldiers were on high alert, especially the underground passage leading to the front, which was the top priority for defending against the swarm.

The swarm moved very quickly, and soon found the underground passage leading to Building No. 41. A small group of giant insects approached Building No. 41 through the underground passage and conducted a small-scale fire reconnaissance.

The cameras arranged in the underground passage sent the swarm's actions to the defenders without error. When the swarm approached the exit, the defenders timed it well and threw several white phosphorus grenades directly into the tunnel.

Phosphorescence suddenly scattered in the dark tunnel, and flames were burning everywhere.

Most of the attacking insects were killed or injured, which became the merit of the defenders. The few giant insects that escaped quickly retreated, and the insect swarm's attempt came to an abrupt end.

The insect swarm was unwilling to fail, and soon organized a second round of attack.

This time, the insect people sent out the most classic giant insect tactical combination, that is, the beetle in front, followed by the springtail and the stinging insect.

If the tunnel was not small enough, the insect people would have to stuff the heavy light insect into the tunnel.

The defenders were still served with white phosphorus incendiary bombs, but the giant beetle was covered with white phosphorus and continued to rush forward regardless!

The shell of this thing is thick, and no matter how powerful the white phosphorus incendiary bomb is, it will take some time to burn through the shell.

The defenders saw that this was impossible? If the giant beetle rushed out with a body of white phosphorus, there would be no need to fight this battle.

So the commander gave an order, and the flamethrower immediately opened fire on the tunnel, and a fire dragon instantly penetrated the tunnel.

Now, no matter how resistant the giant beetle is to fire, it can't stand the flames in the tunnel - even if the giant beetle's shell can still withstand it, they still have to breathe, right?

The fire in the tunnel is so fierce that all the oxygen is burned out, and the giant beetle has to suffocate.

In addition, the air in the tunnel is heated by the flames, and the temperature is at least 800 degrees if not 1,000 degrees.

When such hot air is sucked into the stomach, the trachea and other things will be roasted on the spot.

Moreover, the shell of the insect can't withstand the high temperature. Although the flame in the tunnel only burned for a few seconds, the insects inside must have all died.

Twice in a row, it was very easy to stop the swarm of insects. The soldiers said that it was the easiest to guard the tunnel and fight the insects!

However, ease is only relative. White phosphorus incendiary bombs or flamethrowers are not so safe weapons - the smoke produced by the former is toxic; the latter not only consumes a lot of oxygen, but once there is insufficient oxygen, it will generate carbon monoxide, which directly threatens the lives of the soldiers.

The defenders were well prepared for this, and each soldier guarding the tunnel carried a high-pressure gas cylinder.

The flames burned not only the giant insects, but also the monitoring equipment placed in the tunnel. But this is just a small trouble. As long as the flames are extinguished, a few drones can be sent into the tunnel to solve it.

There is nothing flammable in the tunnel. The flames burned for only a few minutes before slowly extinguishing, but the high temperature left by the burning is still in the tunnel, and it takes some time for the temperature to drop.

This wait lasted for more than half an hour, and the temperature in the tunnel finally returned to normal, but the defenders were surprised to find that the swarm of insects was actually honest and had no intention of launching an attack.

The soldiers were so surprised. Did the insects have a long memory?

They knew that the aliens relied on the insects to command the swarm, but in the past, whether there were insects commanded or not, the swarms would never turn back. 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 sound underground.

The defenders did not have special listening equipment, but on the first floor of each fortress building, there were several "ground jars" specifically for listening to sounds.

The so-called ground jars are water jars embedded in the ground. Anyone who has watched "Tunnel Warfare" must know this thing.

Although the ground jars are indeed a bit rustic, the method is not the point. The point is that this method is practical and effective. As long as there are insects digging holes underground, some movement can be heard, and several ground jars combined together can also roughly distinguish the direction of the sound.

The soldiers soon heard the sound of 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 this tunnel, but he could not tell where it was exactly, let alone where the insects planned to open the exit.

For the sake of caution, the commander immediately ordered the soldiers to retreat to the second floor.

However, retreating is not giving up. After the soldiers left the first floor, they blew up the floor slabs at several key locations on the second floor. One of the points was right above the tunnel. As long as the insects dared to go through the tunnel, they would definitely burn it without negotiation!

The insects probably knew this, so even if there was no guard in the tunnel, the insects would not leave. After about 20 minutes, the floor of a corner was lifted up, and then a giant insect came out.

This place happened to be a blind spot, and this scene was not discovered by any guards.

Then the exit expanded, and more giant insects came out of the hole, and soon there were hundreds of giant insects.

In order to accumulate strength, all the giant insects waited here. If there was no place, they would pile up one by one, and would rather squeeze together than go out.

Until the room could no longer hold them, the swarm of insects rushed out like a flood. However, as soon as they entered the corridor, they were discovered by the guards who were monitoring the corridor.

The soldiers on the second floor immediately opened fire, throwing grenades down as much as they could, blocking the giant insects in the corner of the first floor.

But the insects were not vegetarians. There were several such exits on the first floor. By the time they found this, the swarm of insects had already occupied the first floor.

If it weren't for the flamethrowers guarding the passage between the two floors, I'm afraid the swarm of insects would have attacked the second floor.

It's easy to stop the swarm of insects before they come in, but it's not easy to fight them after they enter 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 swarm of insects.

The defenders' resistance was very tenacious. The swarm of insects attacked several times without results, so they simply repeated the old trick and found a few remote corners to avoid the defenders and chisel open the ceiling, so as to successfully enter the second floor.

The building standards of the fortress building were indeed very high, but no matter how strong the floor was, it could not be as strong as the outer wall.

The sudden rush of insects into the second floor made the defenders very passive, and the defense deployment was directly disrupted. The soldiers tried their best to stop the insects, using more than one-third of the casualties to stop the insects, buying time for others to retreat to the third floor.