Chapter 1607

An hour and a half later, the first echelon of the infected group finally arrived two kilometers in front of Xifeng fortress.

From a long distance, you can see various strategic buildings in Xifeng fortress. Among them, the most prominent one is the sentry towers, which are more than 300.

These were urgently built by the slave workers in order to increase the defensive strength of Xifeng fortress as much as possible before the war.

Below the sentry tower are the army's deployed firepower guards and fire guns, as well as some detection guards.

There are more of them, with 3900 firepower guards, 2100 artillery guns and 700 surveillance guards.

These things have been opened by the road army from all levels of supply boxes for a long time. If converted into dragon coins, it is estimated that it will cost nearly one million to buy them.

The most spectacular is the huge protective device that covers the whole Xifeng fortress. It holds up a blue light that can resist all the illegal entry of enemies. The people of Xifeng fortress call it the sky curtain.

In many defensive battles of Xifeng fortress, the sky curtain was broken many times, but the road army restored it after the war.

The reason is that the sky curtain needs to rely on spar to maintain, and it needs energy to resist the attack. Once the energy is consumed, it will be broken.

If it is the previous curtain of heaven, it is estimated that it will not last long under the attack of millions of infected bodies, and the specific effect is not great.

Because the previous installation is S-level crystal, it can resist the attack below S-level at most, and the whole is relatively weak.

But this time it was different. The Lu army upgraded the curtain of heaven, that is to say, it was equipped with a crystal stone that could resist the attack of research level.

This crystal was obtained by the Lu army when they killed and destroyed the guards in the wucang area. It has been placed in the armed module. I didn't expect that it could play a role in the critical moment.

A sky curtain that can resist the attack of the research level is also the foundation of the road army to defend the infected body group. Otherwise, under the collective attack of millions of infected bodies, it is estimated that the Xifeng fortress without walls will not be able to withstand for an hour.

In addition to these defensive facilities, the slave workers urgently built a half meter high bunker in front of the sentry tower and firepower guard, mostly composed of boulders and coarse wood.

This kind of high-altitude shelter is very small, and it is impossible to block the ordinary infection body, let alone the more flexible variant infection body

However, the slave workers didn't build it to stop them. They just wanted to create a buffer.

For example, when the infected body group rushes forward, the speed is very fast, and the impact force generated is likely to directly knock down the sentry tower and firepower guard.

But with the presence of buffer belts, the infected bodies must slow down and crawl slowly, or they will be knocked down.

As long as they slow down, it will be very difficult to get up again soon. Virtually, it is equivalent to well protecting the defense facilities around Xifeng fortress.

Without the obstruction of the road army and others, the progress speed of the infected body group was obviously faster.

At the same time, the corpse controller constantly adjusts the formation of the infected body group, for example, putting nearly two million common infectious bodies at the front, acting as the first echelon.

Most of these infected organisms are d-level or even have no level. They are almost "defective products" of evolutionary failure. The corpse controller intends to use them as cannon fodder to absorb the first wave of fire.

The second echelon is composed of hundreds of S-level tyrant infectors, nearly 50000 b-order bimodal infections and 300000 C-level elite infections.

They are all mutated infectives, and their strength is more than 100 times stronger than the two million ordinary infectives in front of them. All the tyrannical infectious bodies in the whole infectious body group are here.

We should know that there are seven million infected individuals, and there are only one hundred tyrant infectors, which shows how difficult the evolution of infectious organisms is.

The purpose of placing the tyrant infectors in the second tier is also clear, which is to make them the main force of attack.

After all, there are a lot of A-level dinosaurs in the army, and only a strong tyrant can fight against it.

The number of infectious organisms in the third echelon is relatively small, which is composed of tens of thousands of A-level lickers, tens of thousands of A-level infected bodies with green hair, and 50000 C-level elite infectives.

If the road army were here, they would know that this is a new variant of the infectious body, the name is cleft.

The body shape of the cleft is similar to that of the elite infectious body. Except for the green hair, it has no lips and no teeth at its mouth. It looks like a round muzzle from a distance.

Its ability is also very special, can spit out a strong acid from the mouth, can cover the range of five or six meters.

The distance of spitting is 100 meters, which is twice the attack distance of licker.

If the licker's attack is monomeric and has certain control ability, then the lacer's attack is of range, and each has its own characteristics.

The third echelon composed of the two infectious species also undertakes all the long-range attacks of the infected group, and can attack the enemy from far away.

Although elites have no long-range attacks, they can serve as "emplacements" for lickers and lacerations.

The popular point is to hold up the two kinds of infective body, which can give the licker and the cleft a full view, and can attack the enemy at a distance.It also provides protection for lickers and lacerations, which are so vulnerable to long-range attacks.

The fourth echelon is still composed of ordinary infectious organisms, but these common infectious bodies are all C-level, the number is about 3.5 million, and the overall strength is obviously several times stronger than that of the first echelon.

Their task is very simple, that is, to serve as a reserve force, to make up for the common infected body in front of them when they are dead, or to go where they need to be.

As for the black thorn infected body and the digger, they are not in the echelon, half on the flank, half underground, and somewhat separated from the battlefield. It is estimated that the body control personnel intend to make them sneak attacks whenever necessary.

Not to mention the corpse controllers, they are so hidden that they can't be seen everywhere.

From an objective point of view, the arrangement of this infectious group is very reasonable, and the number of them is huge.

If you look from a high place, you can see that there are infected bodies in the area of nearly 20 kilometers, dense and crowded with each other.

In particular, when the overall formation is well arranged, the various echelons of the infected body group will be pulled more open, no matter attack and retreat will be no problem.

Even before the end of the world, when the human army had all kinds of weapons, it was difficult to deal with such a large number of infectious groups.

Not to mention that after the end of the world, all weapons can not be used. Human beings even have no decent cold weapons.

Although there are powers that make humans stronger, the number of powers is too small to deal with so many infectors.

If there were not many Orc warriors and dinosaurs in the army, it would be ridiculous for those who rely on the resistance to resist the infection

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