In the end, the remaining few biological civilization warships did not escape, and all of them were annihilated by the six elders at one time, but some of these disciples of the Shushan faction also fell in this battle, even the six elders themselves were injured, but fortunately, there are not many people, otherwise the Shushan faction can't stand it, after all, the total number of people in the entire Shushan faction is not very large.

After the battle, after these disciples of the Shushan faction rescued the wounded, they converged with those in the command and retreated to the second line of defense.

The second and third columns had now withdrawn to the second line of defense, and although the second and third columns were basically composed of lightly trained civilians, they did not make an impact on the second line of defense when they retreated.

After withdrawing to the second line of defense, the second and third columns followed the original forces above the second line of defense to defend.

After all, no one knows when the main forces of those biological civilizations will come, but fortunately, at this time, neither the original defending troops nor the second and third columns retreated to the second line of defense, nor did they have an impact on the defensive forces above the defense line.

Compared with the first line of defense, the defenders on the second line of defense think much more, if you add the first column and the second column, then the number of personnel on the defensive line has reached more than 5 million, although no one expects to be able to block the alien biological civilization on the second line of defense, but human beings hope to be able to eliminate some more alien biological civilization on this line of defense, and reduce the defensive pressure on the last line of defense.

At the same time, compared with the third line of defense, the defensive facilities on this defensive line are also relatively advanced, and the defensive strength of these defensive facilities has also been unprecedentedly strengthened.

In fact, at this time, the alien biological civilization was also very depressed, and they were originally sent to ambush the human headquarters on the third line of defense, but accidentally the fleet sent to ambush was all annihilated, which made the mid-end combat force of this biological civilization less than a whole fleet.

You must know that this time they came to attack Pangu Star, there are so many low-end warships and basic combat units, but there are not many mid-to-high-end combat forces, just like the medium-sized fleet composed of medium-sized space warships sent before, they have a total of less than 150 teams.

Therefore, after destroying this medium fleet when the enemy headquarters retreated, they no longer dared to send a fleet to intercept it, because even if they sent a fleet again, they might be annihilated by humans again.

Therefore, they simply let the command of human civilization smoothly evacuate to the second line of defense, and they began to organize another attack.

They want to destroy the second line of defense of humanity in one fell swoop, just like the third line of defense.

Completely to the second line of defense, these people all began to redistribute the defensive places and replenish all kinds of supplies.

In this era, human science and technology are undoubtedly very advanced, especially human weapons of war, but because these people are all composed of civilians, they have only undergone a small amount of training before this, so they cannot give full play to the full performance of these equipment, and can only play 1/10 of the performance of these equipment at most.

In less than half an hour after the second line of defense that the six elders had withdrawn, the main fleet of biological civilization had already caught up, but they did not immediately attack after they came to the periphery of the second line of defense, but stopped outside the range of the second line of defense.

Of course, although the electromagnetic railgun can still attack at this distance, these electromagnetic railguns were made by the Ming Empire thousands of years ago, and the shells fired by the electromagnetic railgun during that period did not have a guidance function, so the accuracy was quite low.

And it is very difficult, if not impossible, for these civilian armies to operate these electromagnetic railguns to attack civilizational pairs that are used dozens of astronomical units away.

"Sixth Elder, the enemy fleet is coming." An exclamation came from the radar guards.

The enemy biological civilization finally launched an attack on the second line of defense, and like the attack on the third line of defense, this time the biological civilization launched an attack on all at once, and did not leave a mobile force, and at a glance more than ten light years away, it seemed that the whole world was full of various types of warships of biological civilization.

It's no wonder that the radar soldier on the alert radar will scream, indeed anyone who sees the scene on the radar will definitely be the same as him, at this time, the entire radar screen is densely packed with red dots, the number is unknown, it is simply endless, even if he has been mentally prepared before this, he still can't help but shout.

"Order, all the people on the defense line are ready to fight, they must be the enemy's footsteps, behind us is the last foothold of our human race in this plane, if it is occupied by the enemy, then we human beings can only wander the universe, become a civilization without a home planet, become the lowest and most human civilization in the entire universe, any civilization wants to bully it, do you really want to live like that? Do you want your descendants to live like that?

What's more, there are still our wives and children, fathers and elders on the Pangu Star behind us, if they break through the defense line, then what will happen to our relatives on the Pangu Star. ”

At the same time, the six elders also ordered to wait until the enemy entered the range of their side to launch an attack immediately, after all, the personnel of these defensive lines are basically composed of ordinary civilians, and the psychological defense line is actually very fragile, if it is put into the enemy civilization to fight at close range, it is easy to cause the collapse of these people's psychological defense line and cause chaos.

The blue light flickered, this is the energy reaction produced by humans when the large-caliber electromagnetic railgun on the second line of defense fires shells, and as a large number of electromagnetic railguns also fire, countless shells rushed towards the fleet of biological civilizations, these shells in addition to ordinary shells also have nuclear shells, chemical shells and other shells of mass destruction.

Fortunately, the three major human kingdoms on Pangu Star withdrew in a very hurry, and these weapons of mass destruction on Pangu Star were not taken away, and this human race still has a certain means of counterattack when facing these biological civilizations.

At the same time, the fleets of these biological civilizations also began to attack the defense line of human civilization, countless cannonballs hit the second line of defense like a storm, and countless lights flickered on the second line of defense, the six elders already knew that every time the light flickered, it meant that many people's lives were ended, although their hearts were very heartbroken, but for the sake of the entire human race, they had to face death, maybe the next one was himself.

Even if his cultivation has reached the Yuan Infant Stage, in the face of such a huge scale of war, no matter how strong an individual's ability is, it will not help, unless his cultivation has reached the merger stage or above, and a person can single out one civilization.