The artillery used more than a hundred cannons of various calibers to shoot out the barrage of Xu Jin, starting from the line that did not actually exist on the map, and advancing towards the coast step by step.

The density of the shells is not high, but the power of the shells is high, the 120 mm shells have a radius of 22 meters to kill insects, and in order to ensure the killing effect, the spacing of the shells is about 30 meters.

The caliber of the wheeled assault gun is only a little over a hundred, which is not as good as a mortar, and the power is just like that - the advantage of this thing is that the barrel is long, the firing range is long, and it is really inferior to a mortar to hit bugs at close range.

The real main force is still the 155mm self-propelled howitzer, the shells used in this thing are specially developed for giant insects, deliberately increasing the power, the radius of killing insects is 67 meters, a cannon hits the past, the power covers the area of most of the football field, all the giant insects within this range, one can not escape, not dead is also seriously injured.

No matter how big the minefield is, it can't withstand such a bombardment from artillery, and eighteen 155 howitzers can cover two minefields with a single salvo.

If it weren't for the artillerymen who knew how to control the landing point, the shells would have destroyed all the minefields that the bugs had not stepped on.

The shelling in just half a minute destroyed the insect swarms on both flanks of Xidan Harbor, and as soon as the shelling ended, the base fired several mine-laying rockets into the minefield, and countless mines fell from the sky and fell on the minefield full of insect corpses.

After the mines land, they automatically flip over, and after the mines are propped up, they enter the working state.

Some of the giant insects that were not dead unconsciously twitched their legs, but they were just within the detection range of the mine, and these small movements immediately detonated the mine.

The number of mine-laying rockets is limited, and the density of newly laid mines is not as high as it should be, but it is better than nothing.

But the aliens had no intention of stopping, and new swarms poured onto the shore.

Liu Huaidong's whole person is not good, stepping on thunder and shelling, the aliens lost not 10,000 but 8,000 giant insects, how can there be so many insects?

No matter how strong the alien biotechnology is, bugs can't come out of nowhere, right?

I can't figure it out, but since the bugs are on the shore, I have to bomb the fuck.

This time, Liu Huaidong didn't draw any demarcation line, and directly ordered the artillery to find their own time, and the originally dense artillery sound suddenly became sparse, but every time the artillery hit, a large number of giant insects were killed and injured.

In this way, the defenders and the insect swarm fought back and forth for more than two hours, and the insect swarm never managed to attack Xidan Port, which made Liu Huaidong very satisfied.

Two hours later, the space battleship arrived, and a salvo of laser cannons wiped out more than half of the landed insect swarm, completely shattering the aliens' plans, and the aliens had to stop the attack.

With the cover of the battleship, the aliens did not move for the next two days, until the night of the third day, when the wind and clouds over the base suddenly changed, and the dark clouds covered the sky, and the aliens took the opportunity to launch a third round of attacks, and as soon as they shot, it was an all-round attack of the swarm, the insects and the servants.

Although the defenders have been strengthening their defenses, they still didn't expect the aliens to be so determined, and as soon as they struck, there were groups of servants, and this hand caught the defenders off guard.

The defenders on the parapet immediately fired back, but the enemy's offensive was far greater than before, and in just over ten seconds, the swarm broke through the parapet under the leadership of the servants and burned the flames of battle into Xidan Harbor.

For flying servants, more than ten seconds is enough time for them to fly over the parapet.

When the soldiers rushed out of the barracks, many sections of the parapet wall had been broken through by the swarms, and the areas still in the hands of the defenders were also in danger.

He wanted to take the warriors off the wall, but time didn't allow it, and the enemy couldn't give him this opportunity.

The servants who attacked the port destroyed the huge ship at the port for the first time, and then launched a strong attack on the interior of the port under the fire of the defenders, and the exchange of fire between the two sides was extremely fierce, every trench and every dark fortress had to be fought over repeatedly, and there were corpses of both sides everywhere, and blood stained the earth.

Liu Huaidong received the news from the direction of the port as soon as possible, but when he received the news, the aboveground part of the port had already fallen into the hands of aliens.

He still has some scruples about not falling into the hands of aliens, but in this situation, Liu Huaidong put aside his worries and directly ordered the artillery to open fire and cover the port with shells.

This time you can't use large-caliber artillery, that thing is too powerful, even if it doesn't hit the bunker, the shock wave or something is enough for the soldiers in the bunker to drink a good pot, only the mortar can ensure the safety of the underground bunker while ensuring the killing of the enemy.

At the sound of the order, all the mortars opened fire at the same time, and the shells rained down, covering the entire port, whether it was a giant insect or a wormman, as long as they rushed into the parapet, even the servants were killed and wounded in the shelling.

But this opportunity is something that the aliens have been waiting for with great difficulty, so how can they stop the attack because of a momentary defeat?

Before the shelling was over, the subsequent swarm poured into the port, which seemed to become a meeting point for shells and swarms, and both sides were invested regardless of the cost, as if the aliens were going to fight the swarm and the cannonballs to death!

Liu Huaidong suddenly realized the purpose of the aliens, what the hell is this, he wants to use the swarm to consume cannonballs, right?

There are a lot of shells in the base stockpile, but the ammunition load of the artillery truck is limited, and after the shells are exhausted, it will take time to replenish them, and the aliens are likely to take this opportunity to launch a general attack on the base!

Liu Huaidong immediately reminded the artillerymen to pay attention to the problem of replenishing artillery shells, and ordered the artillery to divide into two teams and take turns firing to ensure the continuity of firepower to the greatest extent.

However, the swarm did not really stand still, only half of the artillery fired, and the shells immediately became sparse, and the swarm took the opportunity to attack the main entrance of the port, breaking through the gate in one fell swoop and speeding along the road leading to the base.

Liu Huaidong couldn't help but be surprised, this highway is the only safe passage between the coast and the base, could it be that everything before was a disguise, and the highway is the real target of the swarm?

But the aliens also think that the base is too simple, right? If insects are coming from all directions, there is still a little possibility of breaking through the base, and it is only from one direction, and it is almost a straight kilometer, this is the best live target, right?

Liu Huaidong even looked forward to the swarm approaching early, so that the damn aliens could take a good look at how strong the base's defenses were!

To this end, he simply ordered the artillery to cease fire and took the initiative to give the swarm a chance to approach.

The swarms are fast, but the bugs are not as disciplined as humans, and many of the giant bugs run down the road, and some let their companions squeeze out of the road halfway through.

Regardless of whether it is active or passive, in short, these giant insects step into the minefields on both sides of the road, and the result is that wherever the swarm advances, the sound of the mine explosion follows, which is equivalent to the swarm actively notifying the base of the location.