Knowing where the swarm was, the artillerymen could hit the swarm with their eyes closed, and the cannons rang out one after another, and each shell landed on the road with accuracy.

When the Northern Capital decided to place the rail elevator here, the whole of Karidan was already empty, and everything in the equatorial base was built little by little by the engineering troops, and this road was no exception.

Although it is the only connecting passage between the port and the base, the underground engineering is the top priority of the entire base, this road is just a random repair, the roadbed is just a compacted soil, and the road surface is only a layer of tamped triple soil, which is not as good as the domestic rural road.

The strength of such a road surface can be imagined, and every shell that falls is a small crater, and after a while, the road is as potholed as the moon, and there are craters of different depths everywhere.

Everyone knows that this road is completely abandoned, but no one is worried about this, because there are still sappers in the base, and it is just such a broken road, and it can be used by repairing it casually.

Moreover, it is not certain whether it will be repaired in the end.

The shelling was effective, and the shells kept the swarm dead for three kilometers.

But the swarm just didn't mean to retreat, and rushed forward with a stiff neck.

Liu Huaidong felt that it was not a way to fight like this, so he hesitated for a while and said, "Let the artillery stop first and try the laser cannon."

That's right, it's laser cannons, there are only six sets in the entire base, and they are placed in six directions on average, and only two can shoot at the road.

Zhang Chen wanted to say that he should have changed the laser cannon a long time ago, but the words turned around and swallowed back into his stomach.

Liu Huaidong is a more traditional kind of soldier, although the ability to accept new equipment is not weak at all, but the tactical thinking is a little out of step with the times, no matter what kind of situation he encounters, the first thing that comes to mind is always those traditional machine guns and artillery.

Not only weapons and equipment, but also tactical thinking, if Zhang Chen was in command, he would have ordered the artillery to stop firing and put the insect swarm closer before fighting - the new equipment in the base is not only laser cannons, but also two sets of infrasonic cannons and two sets of directional microwave cannons, these are all sharp weapons against insects, that is, the range is relatively short, and the insect swarm must be brought closer to work.

It is precisely because of this that these new weapons have not been taken much seriously by Liu Huaidong and have not been able to play their due role...... Well, you can't say that, because since the base was built, there has been no precedent for a large group of giant insects to attack, and the sporadic giant insects can't even get past the minefield, let alone get close to the base.

Liu Huaidong's order had been conveyed, and the non-stop cannon sound suddenly stopped, and many unknown soldiers thought that the battle was over, but they did not expect that the swarm was rapidly approaching the base.

Liu Huaidong always believed that it was not a good thing to let the swarm get close to the base, so he did not give the swarm a chance to continue to get closer, but ordered the laser cannon to fire immediately.

At this time, the distance between the insect swarm and the base was still two kilometers, and two finger-thick lasers that were invisible to the naked eye swept past the ground, one left and one right.

The running swarm was like pressing the stop button, and the giant insects that rushed to the front were sliced open from the front by the laser, and fell to the ground one after another.

The giant worms behind continued to move forward, and the crossed lasers swept back, so another batch of giant worms fell to the ground.

After a few successive sweeps, the alien finally realized that something was wrong and ordered the swarm to stop.

Liu Huaidong couldn't help but sneer, is this a place where you can come and leave when you want?

The laser continued to sweep, and none of the giant insects that rushed into the range of the laser cannon survived.

It's not that the laser cannon is so powerful, but that the giant insect doesn't have the concept of escaping orders at all, and the aliens ordered the swarm to stop, but they didn't order the swarm to evacuate, so the bugs were tragic, not so much that the swarm was annihilated by the defenders, but that the aliens were killed.

At this time, the aliens had realized that it was impossible for the swarm to break through the base from the front, but they still had no intention of stopping the attack, but continued to send the swarm to attack.

This time it is no longer a frontal single-point breakout, but a full-scale assault in all directions.

It wasn't until the aliens attacked in full force that Liu Huaidong realized that the base was not as strong as he imagined, because the attack not only came from the ground, but also from the ground and the sky, a real all-round three-dimensional attack.

Now it's busy, the swarm on the ground, the servants in the air, and the various weapons in the base are firing wildly, and the ammunition consumed every minute has to be calculated in tons.

As for the underground, hehe, Liu Huaidong didn't care about it at all, and only arranged a part of the troops to guard it.

The aliens' tactics are indeed three-dimensional, but they are also a bit too taken for granted. The idea was to use ground and sky attacks to attract the attention of the defenders, and then open gaps in the ground to finally attack the base.

But the aliens didn't expect that when the northern capital built the equatorial base, they thought of this, not only built a reinforced concrete protective layer more than ten meters thick underground, but also set up a buffer zone in the protected area, even if the giant insect dug through the concrete and rushed into the base, it had to face layers of iron railings and a buffer zone of thirty meters.

You must know that the equatorial base is not built casually, and if you want the first batch of dungeons, it is just a simple hollowing out of the underground, and you can arrange people to enter it, and you don't think about anything else at all.

However, with the gradual deepening of human understanding of giant insects, the structure of the dungeon has also improved, and the military has used all the experience of building the dungeon for more than ten years on the equatorial base, and all kinds of insect prevention measures are available. How can it be that easy?

However, the determination of the aliens is very great, and the insect swarm participating in the attack does not care about life and death, and it is clear that they want to pile up the worm life to win.

After this battle, all the officers and soldiers in the base have a new understanding of the madness of aliens.

Liu Huaidong later learned that it was not that the aliens were too crazy, but that the human base in the entire tropical region had been captured by the aliens, and only the equatorial base was still standing in the onslaught of the insect swarm, almost becoming a thorn in the side of the aliens.

So many human bases have been taken, and the aliens don't believe it, and in the end, this place can't be captured, so the aliens mobilized a large army and launched round after round of crazy attacks on the equatorial base.

The minefield was leveled, but the swarm did not stop; The laser cannon overheated, and the swarm didn't stop; Infrasonic cannons and directional microwave cannons crisscross the battlefield, shaking and roasting all the giant insects close to the base, and the insect swarm still fights to the death.

Liu Huaidong knows the solidity of the base, he never thinks that aliens can break through the base, but the attack of the insect swarm has not stopped, and the gunfire and cannons in the base have not stopped, and the mountains of ammunition are consumed at a speed visible to the naked eye, according to the current consumption rate, the base can only last for three days at most!