Just after settling the military merits, there was a dense burst of artillery fire, which was the sound of the defensive artillery of the first line of defense.

"The cannon sounded, so it is the Zerg that has entered our range, let's get out of here first." Lin Luo's face changed slightly, and the Zerg had already begun to attack the city.

With more than 10 million Zergs, and some powerful Zergs, this defensive battle is not so easy.

Generally, human defense cannons have a range of at least ten kilometers or more, but ten kilometers is too far to hit the target, and most of them will only fire when the Zerg enters a range of five kilometers, because the Zerg can be seen at a distance of five kilometers.

So Lin Luo and his party hurried to the garrison of the Blood Maple Army, and then sat on their mecha one after another, and then walked towards the first line of defense.

The fifth military camp has a total of five defense lines, that is, there are five city walls, from the outside to the inside, there are a total of five city walls, if you usually have to enter and exit, that is, the gate can be opened to enter and exit freely, so that even if the Zerg breaks through the first line of defense, there is a second and third line of defense, so that the Zerg will not call, and there is no power to fight back.

Moreover, the open space between every two walls is also full of traps, and as long as it is opened, it can also cause a lot of damage to the Zerg.

The mechanism is usually hidden underground, and people walk on it without feeling any discomfort, as long as the engine is turned off, then these surfaces will definitely become a terrifying killing ground.

This is also a means for humans to deal with the Zerg, and high-tech weapons are emerging one after another.

"The people who ordered us to guard the Thor mecha and try not to let the Zerg destroy our Thor mecha." Lin Luo ordered to the officers of the Blood Maple Army.

"Yes, we must protect the Thor mecha." From the officer's tract.

As for the people of the Heavenly Sword Squad, Lin Luo was not with them, but fought on their own, anyway, the war had already started, and the battle there was the same.

Not only was the fifth military camp attacked by the Zerg, but the other four military camps were also being attacked by the Zerg, and the attack was launched earlier than the fifth military camp.

Lin Luo's mecha stood at the head of the city, looking into the distance, the Zerg was overwhelming, the earth shook, the tall thunder beast also appeared, and the tyrant of the Zerg also rushed over with huge steps, giving people a sense of powerlessness.

However, the human side is not vegetarian, countless artillery fire fell into the camp of the Zerg, and a large number of insects were killed.

"Give me the air force that is targeting the Zerg, and now the air force of the Zerg is the biggest threat to us." Lin Luo ordered.

The Zerg air force can ignore the height of the city wall, fly directly to the city wall, and then attack the human soldiers, which will cause great trouble to the human army.

Many times it was the Zerg's air force that slaughtered the soldiers on the city wall, and no one used the weapons on the wall, so the human firepower would naturally weaken, so the Zerg could more easily break through the city gate, or open a gap for the Zerg's ground troops to rush in.

Lin Luo's mecha picked up the sniper rifle in his hand and aimed at an assassin insect three kilometers away, this assassin worm was cyan, indicating the strength of the mecha division, which was an elite zerg.

Lin Luo had just shot for a second or two, and then he saw that the assassin bug's head burst open, becoming a headless corpse, and then fell to the ground.

The other mecha warriors of the Blood Maple Army also used long-range weapons against the Zerg in the distance, and a large number of Zerg air forces were killed, and the corpses kept falling down like dumplings.

"Squeak." The swarm was furious, and it was unforgivable for humans to kill their own kind like this.

Tens of thousands of aerial zergs suddenly picked up speed and flew towards the human wall, intending to give the human race a dismount.

"Here, let the anti-aircraft missile prepare, and let the Thor mecha not save ammunition, and give me the best to launch it." Lin Luo shouted.

In just an instant, a large number of aerial zergs came to the sky above the city wall, ready to pounce.

At this moment, tens of thousands of anti-aircraft missiles were launched in an instant, and the target was the Zerg overhead.

The air forces of the Zerg are mainly flying mantis and assassin bugs, especially the flying mantis, the assassin bug is a more advanced insect than the flying mantis, and the manufacturing cost is also higher than that of the flying mantis, and the combat effectiveness of the assassin bug is not comparable to the flying mantis.

The Assassin Bugs can fight in the air as well as on the ground, and the Assassin Bugs have wings, indicating that they are also capable of fighting in the Air Force.

At least one-third of them have missiles launched by Thor mechas, not only the Thor mecha of the first line of defense launches missiles, but the Thor mecha of the second line also helps launch missiles against the Zerg in the air.

The distance between the first line of defense and the second line of defense is not far, only three thousand meters, and with the range of the Thor mecha, they can completely take care of each other.

Tens of thousands of missiles entered the swarm, causing a huge explosion, and many Zerg were affected, either killed or injured, and many insects were blown apart, and there were no dead bodies.

A large number of Zerg corpses fell from mid-air, and the blood of the Zerg stained the ground red, and in an instant, most of the tens of thousands of Zerg air forces of the Zerg were reduced, and the losses were heavy.

Then a large number of mecha flew into the sky and made a move on the surviving aerial zerg, and the two sides fought, and in the end, the zerg could not defeat so many human mechas, and they were killed one after another.

The first wave of the Zerg's attack failed, at this time, the Zerg's ground troops rushed to the city, the machine gun holes on the city kept firing at the Zerg under the city, many jumping insects and stinging snakes died tragically under the dense firepower, although the Zerg continued to have casualties, but kept rushing up, not afraid of death.

"Puff puff." The sound of armor piercing came, and suddenly several marines' armor was pierced by the bone spurs of the stabbing snake and lost their combat effectiveness.

I don't know if they were unconscious or dead, but it didn't take long for medical personnel to carry these wounded soldiers away.

This is true not only of these Marines, but also in other places.

As the Zerg came to the city, the scuffle began, and Lin Luo kept killing the assassin bugs and other Zerg who had climbed the city wall, killing one by one.

An assassin bug pounced on Lin Luo's mecha from the sky, and the figure of Lin Luo's mecha moved, and the jet system behind it was activated, and then rushed towards the assassin worm in the air at an extremely fast speed.

In an instant, the two staggered in mid-air, and then I saw that the assassin worm was broken in two, and it was actually cut in half by Lin Luo's sword.

Ordinary assassin bugs were no match for Lin Luo at all.