A chaotic gun, the outer bone man who fell behind the defense line was full of holes, and after the fight, he found that the outer bone man had already died too long ago to die anymore, and there was no need to replenish the gun. But no one thinks they are nervous, but they all take it for granted.

It seems very easy for the commandos to eliminate the Outer Bone Man, but it is not only to take advantage of the strong equipment, but also because of the early contact between Ye Fei and the Outer Bone Man, they have a certain understanding of the Outer Bone Man, otherwise even if all the commandos are pulled to Mars, in the face of the enemy that the bullet cannot penetrate, they will only be beaten with their eyes stared.

The Martian garrison is part of the army, and although it has an independent command system, it is still subordinate to the army on the earth side of the system, and there is nothing particularly surprising about the equipment, and it cannot be compared with the commando team at all, or even with the troops on the earth!

The political environment of Mars is very simple, there are only immigrants from the three major space countries, and the three countries signed a series of agreements at the beginning of the development of Mars, among which there are provisions restricting the Martian garrison, according to the agreement, the Martian garrison shall not be equipped with tanks and other heavy land weapons, the weight of armored vehicles shall be limited to less than ten tons, and self-propelled guns shall not be equipped......

At the beginning, no one doubted the tripartite agreement, but today, the army suffered a lot of losses in the battle with the Outer Skeletons, and it was not for the large-scale support of the commandos, and it was simply impossible to stabilize the defense line in such a short period of time, but even so, the pressure on each defense line made the army commanders breathless.

The Outer Skeletons did not spread out in a large area, and after parachuting, except for a few individuals who landed in the human city, the other Outer Skeletons quickly gathered into several groups and launched a large-scale offensive against nearby cities.

There are hundreds of large and small cities in China that belong to the Martian colony, but they can be counted on ten fingers by breaking the care of the Outer Bone People, and all of them are megacities with a population of more than 10 million.

If it weren't for the fact that the number of garrisons was proportional to the size of the city, it is difficult to say whether an effective defense could be organized in such a short time.

Fortunately, their eyes are fixed on the big cities, and the garrisons in small and medium-sized cities are insufficient to resist the large-scale attack of the Outer Skeletons, and if a large number of small and medium-sized cities are slaughtered by the Outer Skeletons, even if all the invaders are eliminated, the military will not be able to account to the people of the whole country.

The soldiers who had "solved" the Outer Bone Man quickly returned to defense, pounced on their respective battle positions, and constantly poured ammunition into the Outer Bone Man like a tide, the gunfire had long been indistinguishable, and the sound of the continuous formation was like a tide, and the pervasive smoke made it difficult for the soldiers to breathe.

The rainstorm of bullets shot out, often rushing to the front of the outer skeleton man to fall down a piece, after being crossed by the outer skeleton man behind, the fallen outer skeleton man got up again, only a few unlucky guys to the extreme, will be killed by the blind cat touching the mouse bullet through the eye.

Ordinary soldiers still use 5.5mm ordinary bullets, the killing effect of the Exoskeleton is very limited, they can only keep shooting, but the impact of the bullet is not fake, the strong inertia can at least offset the impact of the Exoskeleton,

It's not that Mars is stingy, but the natural environment formed by Mars through artificial transformation is very fragile, and all industries that have an impact on the environment are not allowed to build on Mars, so the industrial base is far behind the Earth, although the satellite factory on Phobos is running at full capacity, but the time is too short, and the number of armor-piercing bullets produced is limited, and it is impossible to equip every soldier.

Moreover, the satellite factory is also responsible for the production of other ammunition of various calibers, and it is impossible to devote all the production capacity to the production of bullets.

In order to improve combat efficiency, all the large-caliber weapons that can be found are distributed to the soldiers without pulling a single piece, but it is still far from being able to do a single weapon per man.

Therefore, for the army, supporting firepower has become a life-saving straw.

Before the arrival of air support, the artillery positions arranged behind the line of defense became the backbone of almost everyone's hearts.

The fierce battle made Bai Ye flawless, a small radius with a high overload turned, the fighter flew back again, and two more missiles shot out.

This has been repeated several times, except for the nuclear bomb in the main bomb bay, all the missiles have been thrown away, although there are still machine guns, but the missiles are surface killing, machine guns are point killing, and the efficiency is not the same at all.

Bai Ye was in a hurry: "Undercurrent and undercurrent, I am Apprentice No. 12, the onboard weapons are consumed, where is the airport?" I need to refill my ammo! ”

The F-440 can enter the atmosphere from the universe to fight, but it is absolutely impossible to leave the atmosphere and return to space with the strength of the fighter.

"Undercurrent received, please go to coordinates XXX!" The tide immediately responded, and thanks to the timely support of the aviation, the artillery was given a chance to breathe, and the barrel had completed heat dissipation and could be re-engaged in battle.

The fighters flew over the defensive line, the red flag fell on the position, dozens of artillery pieces bloomed with the flames of death at the same time, and in the loud bang, the shock wave of the muzzle rushed up layers of smoke and dust, and the shells roared into the outer bones, although it was impossible for the army in a defensive position to charge, but in order to achieve the blocking effect, the artillery still used the barrage Xu advance tactic, looking down from the sky, the assault cluster of the outer bones suddenly grew like a neat row of flame trees, and then another row, and then another row......

I don't know how many exoskeleton people were blown up into the sky by cannons, and the killing effect was far higher than that of infantry rifles.

The fighters flew away from the defensive line and left the two sides behind in the fierce battle.

If purely in terms of support effect, the fleet in the universe is the best support platform, just get a few asteroids of suitable size and throw them at the predetermined coordinates. It's quick and convenient, and it's inexpensive.

There were still seven or eight fighters that arrived here with Bai Ye, and they basically threw away all the conventional missiles, and everyone flew towards the airport together.

Not long after the group left, Ye Fei arrived at the defense line in a landing craft that was much heavier and slower than the fighters, and Ye Fei was impatient to contact the commander here: "Detachment 21232 is ordered to support, please answer when you hear it!" ”

"21232, I'm an undercurrent, please do your best to destroy the enemies outside the city, over!" Undercurrent is the supreme commander of the local area, but he is not familiar with the equipment and tactics of the commando, so whether it is the commandos who landed here in the early stage or the troops who came to support them later, they only give general orders, and let the commandos freely exert their combat effectiveness.

"Understood!" Ye Fei replied.

The landing craft did not fly to the defensive line, but turned around and flew to the area with the most dense number of Outer Skeletons, and several team members did not need him to greet them, and carried out the slaughter very tacitly, rifles and machine guns, mercilessly harvesting the lives of the Outer Skeletons like the scythe of death.

But how many enemies can you destroy with mechanical energy alone? Ye Fei didn't think about relying on a machine gun to clean up the outer skeleton man, the landing craft flew over the target, and he immediately gave an order: "Gas bombs, throw them at me!" ”

The next few people were stunned at the same time, and they were overjoyed, and they took off the grenade behind their waists and smashed it down, and the black bear even threw the machine gun aside, carrying a box of "poison gas grenades" in one hand, and smashed them all over the place.

The height of the landing craft was not five hundred but four hundred and five, and the grenade was thrown at such a high place, and before it fell to the ground, the poison gas began to snort, but fortunately, the poison gas itself was slightly heavier than the air, and the poison in the grenade would not be completely consumed before it hit the ground.

The outer bone man who was targeted by Ye Fei was considered to have fallen blood mold, and wherever a grenade fell, it would fall a piece, which was dozens of times better than the effect of the cannonball.

Biological and chemical weapons are known as the "atomic bombs of poor countries", which shows from one side that biological and chemical weapons are cost-effective and lethal weapons of mass destruction.

All the warriors who witnessed all this were stunned by the effect of the nerve agent, if this had already happened, why did they have to defend it so hard?

Ye Fei didn't think about the direction of the wind at all, and pieces of poisonous clouds drifted towards the human defense line, so frightened that the soldiers almost blew up their nests.

The poison cloud passed by, the outer skeleton fell in pieces, life and death were unknown, the commander immediately made a decision, ordered those who had gas masks to put them on quickly, and those who did not immediately retreat.

The fighters were relieved and quickly withdrew from the defensive line.

Ye Fei couldn't laugh when he heard the commander on the radio order to retreat, and hurriedly remedied: "Undercurrent undercurrent, that, this thing has no effect on people......

"Huh?" Undercurrent was skeptical, "Really? ”

It's nothing else, it's a nerve agent!

"Do I dare to joke with the lives of so many people?" Ye Fei was helpless, "This thing is researched for the Outer Bone Man, and it is not toxic to people, at least for now, no side effects have been found." ”

The depression of the undercurrent was gone, good fellow, and he didn't say it sooner, but now was not the time to pursue it, he immediately gave the order to the soldiers to return to the line of defense, and emphasized that the poison had no effect on people.

The warriors were somewhat hesitant, but after the undercurrent appeared unprotected in the poison cloud, everyone relented and returned to the defensive line.

But at this time, there was nothing for them to do, and wherever the poisonous clouds floated by, there was no outer bone man who could still stand.

This section of the defense line that the undercurrent is responsible for is the main direction of attack of the Outer Bone Man, but the other directions are not without the Outer Bone Man, the landing craft followed the trail of the Outer Bone Man and gradually moved away, and the Undercurrent suddenly patted his forehead: "21232, are you throwing a lethal poison or a narcotic gas?" ”

"It should be a lethal agent."

"What about the lethal dose?" Undercurrent asked.

"Huh?" Ye Fei was stopped by him, "How do I know this!" ”

"Holy!" Undercurrent cried with a sad face, "I understand, come on, rush out of the gang, make up the guns one by one, and don't pull down any of them!" ”

Damn, I'll do it too!

Ye Fei was startled, this is really enough, if he dies, he has to make up for another shot?

He could understand the idea of the undercurrent, nothing more than worrying that the concentration of the poison was not enough, and that the alien skeleton man would just be unconscious and not dead, but even if the order was directed at the alien, it still reminded him uncontrollably of words such as "killing prisoners" and "abusing corpses".

Undercurrent didn't have that many ideas, and in the previous battles, his troops had lost hundreds of warriors, and this account happened to be calculated with the Outer Skeleton.

The moment the order was given, the defensive line was immediately half empty, and countless soldiers who were still young and innocent as a blank sheet of paper rushed out of the trenches, and one by one they mended their guns with the eyes of the outer skeletons, and the monotonous horns on the battlefield sounded one after another, and the sound of gunfire echoed endlessly.

Ye Fei Until before, the army had killed and wounded one-third of the enemy, and after the arrival of air support, this number rose to one-half, but the fierce battle made the soldiers almost reach the limit, and no one could say how long they could hold out.

The remaining half of the enemy had lost the momentum of overwhelming the mountains and seas, and as a result, they were wiped out by Ye Fei - the landing craft was not a bomber, and the number of poison grenades carried was limited, Ye Fei only picked the place where the enemy had the most and threw it, but the effect of the poison was good, and the war was reversed.

There are still many unpoisoned exoskeletons on the periphery of the battlefield, but although the brains of the exoskeletons are small, it does not prevent them from having normal intelligence, as long as they know how to think, they must know what fear is, and the remaining exoskeletons can't understand what a nerve agent is at all, seeing their companions fall inexplicably, they are afraid, the place where a large number of exoskeletons fall is like a watershed, and the remnants of the exoskeletons do not dare to take a step beyond the thunder pool, and they are frightened and stay away.

Outer skeleton people's thoughts are far less complex than those of humans, so they feel much simpler than humans, and they move forward when they are not afraid, but once they start to fear, they will form this kind of stagnant situation.

The soldiers who replenished their guns gradually advanced from the inside out, and suddenly found the enemy who had escaped, and immediately found themselves in a dilemma.

The undercurrent was also dumbfounded, and if he went further, he was afraid that the Outer Bone Man would rush up again, but retreating was equivalent to selling his back to the enemy, and no matter how stupid the Outer Bone Man was, he would know how to rush up!

The landing craft had already flown far away, and there was still fighting in other directions, so it was impossible to summon the landing craft back, and the two sides were staring at each other for a while, and they actually stalemate.

What to do? The undercurrent mind is spinning, but how can I think of a way for a while? At this moment, suddenly a call came from the radio: "Undercurrent, I am Apprentice Twelve, please indicate the target!" ”

Damn, savior!

The undercurrent pounced in front of the radio station in the posture of a dog snatching, reported a string of coordinates in a numb manner, and laughed loudly after finishing speaking, his grandmother's alien, look at how you still fight with Lao Tzu!

Bai Ye's fighter did not hang missiles anymore, but carried a large number of bombs, due to the abandonment of the heavy outer armor, in addition to the built-in magazine full of bombs, the wings were also full of bombs.

The fighter plane flew over the defensive line, causing the soldiers to cheer indulgently, and the outer skeleton man, who could no longer be described as sharp-eyed, found that something was flying in the air again, and immediately there was a commotion.

From the perspective of human beings, it is impossible to see whether there are any officers or other positions among the Outer Bone People, but the organization of the Outer Bone People has always been very tight, until Bai Ye dropped the bomb, and the gathered Outer Bone suddenly fled as fast as a frightened rabbit...... And they scattered and fled.

Undercurrent wiped his face fiercely: "Damn, it's good that the aliens don't have planes." None of the warriors who heard this did not nod their heads.

Although the Outer Bone Man began to flee, Undercurrent feared that this was the Outer Bone Man's desire to capture him, and did not dare to order the warriors to pursue him.

Missing one enemy is more important than destroying a hundred; Defending the line is more important than destroying the enemy!

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I'm busy today, I'm sorry for the update so late, four thousand words, and it's not divided into two chapters.