"The standard spacing of the source pillars of the S-type shield is 10 meters, and the tensile height of each S-type source column is 5 meters. The laying sequence is to fix the four root columns first, then pull the net, and then use the computer to output the specified code to activate the source energy. The standard source of the S-shield can last up to 18 hours without external force. If you are constantly under attack, it will only last for more than 2 hours. When you're in the wild and can't break through with a large number of orcs, the S-shield can buy you time to wait for rescue. So it's important to keep the paving process in mind. ”

In the evening after the anatomy class, a new instructor was in the classroom, teaching Ling Hai how to put on an S-shaped defensive shield.

The S-type shield is a smaller version of the Thiel shield, and the defense mechanism applied by the Type S is the same as that of the Thiel shield, but the size and energy level of the two are different. There are three types of smaller versions of the Thiel Shield, which are S, M, and L.

The full size of the S type is a 10 by 10 x 5 (m) box, the full size of the M type is a 200 by 200 by 10 cuboid, and the full size of the L type is an 800 by 800 by 40 cuboid.

Because there is a conflict between the source pillar nodes of the defensive shield, there is a strict and unique standard for the distance between the source pillars of the same energy level.

Like the Tyre Shield, the standard distance between the two pillars that make it up is 5,000 meters. If this distance is longer or shorter than 5000 meters, it will lead to a conflict of source energy, and the defensive shield formed will be seriously unstable and cannot play a defensive role.

The conflict of source energy nodes is a century-old problem that restricts the recovery of territory by mankind.

Because, in order to regain the territory and lay a new source pillar, the Tyre defense shield must stop operating at least two root pillars, and the distance between the two root pillars is 5,000 meters, once the two root pillars are stopped, it means that the defense shield will have a gap of 15,000 meters. You must know that the source pillar of the Tyre Defensive Cover is a Optimus Pillar with a length and width of 400 meters and a height of 1,000 feet, and its laying work cannot be completed quickly in a short period of time. If the 15,000-meter defensive shield is open for a long time, alien life will undoubtedly swarm, and then it will not be a question of humanity recovering territory, but a human extinction crisis that the alliance may be completely encroached upon.

From the day the Tyre Shield was built, it was destined that if humanity could not drive alien creatures far and far outside the shield, it would be impossible to easily regain the territory. Of course, humans can build a human wall defense line outside the defensive cover, use the army to block the beast soldiers, and give the engineers time to lay the source pillar.

However, the effort is too disproportionate to the gain. It is possible to recover only a few tens of square kilometers, and humanity will have to pay the lives of tens of thousands of soldiers.

Since the Thiel Shields could not be easily moved, small shields were designed to help soldiers carry out combat missions in the Outlands, so three smaller versions of the Shields came into being.

The number of human strongholds in the Outlands has increased with the creation of three smaller versions of the shield. The lives of soldiers on missions in the outer regions are more secure than before.

Different combat units, the type of defensive cover used is also different, like a combat unit with less than 30 people, the S-shaped defensive cover is enough. The M and L shapes are defensive shields that are only used by the army during large-scale operations. Ling Hai and these mercenaries usually act in small teams in the future, so it is enough to learn the laying of the S-shaped defensive shield.

When the lesson was over, and each class had worked together to lay out the S-shield, the instructor said, "Okay, all of you, I'm going to tell you a few things." According to the instructions from above, you will be going on a series of outland internships for the next three days. You will be divided into teams of 6 and will carry out three internships within a range of 10 to 30 kilometers outside the canopy. ”

"The three internship tasks are reconnaissance and mapping, laying fixed-point defense covers, and collecting and transporting beast soldiers. The specific task requirements will be in the task manual that will be sent to you, so read for yourself. I would like to emphasize that these three tasks are continuous and cannot be completed in one day. In other words, you will be in the field for three days in the internship area. What to eat? Where to sleep? It's up to you to figure it out for yourselves. ”

"During your mission, we will rate each of your actions and come up with an overall internship grade. Of course, considering the danger of the Outlands, we will equip you with guns and ammunition and provide assistance from a suitable distance. However, once assistance is requested, the rating of all members of the team is reset to zero, so consider it carefully. Tomorrow at 6 o'clock, all the trainees will gather in the playground to receive weapons and equipment. That's all, do you understand? ”

"Report sir, I understand!" The students below replied in unison.

The students had already heard about it, so no one showed doubts or surprises, and many people's faces were filled with excitement, because the next internship task was an important opportunity for the students to open up the points gap.

Of course, after hearing this, there are also people who are so nervous that they don't sleep all night. After all, in the next internship tasks, the trainees no longer have sufficient protection. 10 to 30 kilometers outside the defensive cover, this area is no longer an area that the army can completely control, stay in it for three days, anything can happen, and if you don't do it, there will be casualties. But there is no way, mercenaries always have to grow, and dangerous beasts always have to face. The army has been very conscientious in escorting them to this point, and it is impossible to complete the internship task for them.

Fortunately, those students are nervous and scared, but everyone knows that the next key is to think about how to complete the task, rather than dwelling on useless emotions.

The night that kept many people awake passed quickly, and the hour hand was inexorably gone to 6 o'clock.

......

After collapsing most of the wall, Ling Haizheng held his breath and slowly poked his head out. More than 50 meters away from Linghai, there are 5 bursting teeth eating a wild boar at this moment. Ling Hai glanced around, but didn't find the other beast soldiers, so he turned around and quietly gestured behind him.

"Five bursting teeth, there are no other beast soldiers around, you can move."

Soon after the gesture, the five figures touched the vicinity of Ling Hai.

Ling Hai continued to gesticulate at one of them: with a gun or with a dagger?

The man replied: You stay where you are and use your guns to guard and support, and the five of us use daggers to deal with the orcs.

Ling Hai nodded, held his gun, and stood guard in place.

A few minutes later, several short screams were heard in the distance, and the five Burst Teeth were killed almost simultaneously at close quarters.

"It's a pity, I finally encountered a burst of teeth, so I threw it away there to cheapen others......"

After killing the Burst Teeth, the five people over there didn't stay long before returning to Ling Hai's side, and Li Dana, a member of the fifth class, said with pity on his face.

"Our priority is to find the laying point of our squad, and now bring the Burst Teeth to affect the marching speed. Don't worry, there are beast soldiers in the back for you to draw from. Hou Ziqi on the side explained in a low voice.

"Then at least some meat for dinner, or what are we going to eat for the night?"

"You can't starve to death if you don't eat for a day, anyway, do you have an opinion on the squad leader's decision?"

"No, no, how could I question the squad leader, I just put forward my opinion reasonably." Li Dana hurriedly shook his head.

At this time, Shi Jianjun, who had just been silent, picked up the heavy machine gun on the ground and said to everyone: "It's getting dark, we need to find a safe rest base as soon as possible, and we can go out hunting and get food after finding a stronghold." Let's go, don't delay any longer, the smell of blood will soon attract the other orcs. Ling Hai and Barton, you two carry the defensive shield device, Zhou Quan pays attention to the drawing along the way, Dana is responsible for guarding, and we move forward along the established route. ”