After all, > aliens are stronger than humans, they may not pay attention to the use of external forces, but their natural strength**, coupled with the reproduction of metamorphosis, aliens have gradually gained an advantage on the battlefield.

"Execute the battle plan, the mech corps retreats to the back of the line."

Orders from the command headquarters came from everyone's communication system, and the support firepower was instantly strengthened, and the row of light pillars blasted a huge gap in the alien camp, and the alien offensive instantly stalled.

Looking at the human mechs that retreated like a wave, all the generals in the Pentagon panicked.

Dronjevic cried out on the spot: "What? Can't stand it? We've failed again? ”

The generals' terrified eyes were fixed on the live video, and they saw that all the mechs had flown back into the mothership, the human defense line was slowly retreating, and the waves of aliens were pouring up.

The warships and fortresses were still wildly unleashing their firepower, and from time to time huge bombs exploded in the alien camp, and the space was like a burning line of fire, and the waves of these bugs were finally getting closer and closer.

Unconsciously, the human defense line retreated farther and farther, and the rings of Jupiter in the distance became more brilliant, but everyone knew that the new range was actually a recombination of alien corpses and fragments of mechas.

Just when everyone's hearts were hanging by a thread, in the space behind them, suddenly a row of turbulent blue light burst out, swept over the heads of the battleship group, and pounced on the alien insect tide with a "boom".

This wave of strikes was extremely powerful, a few points stronger than the firepower of the combination of the battleship and the Battlestar, and the two waves of attacks combined directly wiped the alien vanguard clean.

"Kill!"

Even on the earth, whether it was the West Hill or the Pentagon, the generals heard the sound of the charge.

The tail boosters of all the battleships lit up, and the mech battle group once again pounced into the alien camp.

This round of attacks was completely different from the previous ones, the blue light was extremely powerful, and it constantly bombarded behind the alien camp, where the bugs vaporized directly into gas.

For the first time, the alien insect tide panicked, and they seemed to instinctively be terrified of the blue light, and the bugs' camp began to panic.

With a "bang", the entire camp of the aliens suddenly collapsed, the bugs fled in all directions, and the human mecha corps began to reap the fruits of victory.

"Well done!"

In the Pentagon, a group of generals high-fived each other, and their hanging hearts relaxed. In the image, Ma Tianyuan and they hugged each other, but after this battle, most of their comrades-in-arms were no longer there.

Zhang Binhui and they floated back with their bodies in tow, they were too tired, and the long-term battle consumed every drop of their spiritual power.

Yuan Yuanzi took care of them carefully, and although she was just as tired, her heart was full of admiration.

Once again, the human defense line has advanced to the outside of Jupiter's rings, and more supplies have been brought in from the rear, a new fortress that the expeditionary force is going to build into permanence.

The final collapse of the aliens caused them heavy casualties, a large number of mutilated corpses floating in space, and the skies of Europa were finally swept away by the expeditionary force.

"General Zhang, what should we do later?"

Zhang Binhui replied very decisively: "Replenish, rest, collect intelligence, completely cut off Ganymede's connection with other planets, and make adequate preparations for landing operations." ”

More reconnaissance satellites were released into space, more and more information about Europa was brought together, and three days later, the command of the expeditionary force held a meeting.

"There are three characteristics of Ganymede's geography that affect our tactical play, so we have to pay attention to them.

First, there are two main types of typical topography on the surface of Europa: a dark zone with very old craters, and a slightly younger bright zone with a large number of grooves and ridges.

The dark zone covers about one-third of the sphere's total area and contains clay and organic matter, possibly caused by the meteorite that hit Ganymede.

The line of demarcation between the dark and bright zones is clear, and here the visibility will be reduced instantaneously, which will have a serious impact on the advance of our troops.

The trench topography of the two areas, which we believe was mainly formed by tectonic activity, may have exerted sufficient pressure on the lithosphere of Ganymede, and the forces responsible for this pressure may be related to tidal heat that has occurred in the past.

According to this situation, we need a large number of terrain fighters, with more flying mechs, so that we can entangle with aliens in the trench terrain.

Second, Europa has an oxygen layer and an ionosphere. Our Scout Werther discovered the presence of a rare, oxygen-based atmosphere on Ganymede, similar to Europa's atmosphere.

The telescope of the satellite is in 130. 4 nm to 135. The far-ultraviolet spectral region of the 6 nm segment detected the atmospheric light of atomic oxygen. This atmospheric light is emitted when molecular oxygen is bombarded with electrons and dissociates.

Although this trace level of oxygen concentration is not enough to sustain the existence of ordinary life, it is believed that it is not a problem at all in the face of aliens.

Not only that, but we believe that the presence of a neutral atmosphere means that there should also be an ionosphere on Europa, since oxygen molecules are ionized after being bombarded with high-energy electrons from magnetosphere and the sun's far-ultraviolet radiation.

This is a more favorable situation for us, the fuel consumption of our ship is very small, but on the other hand, it also shows that it is adapted to the survival of aliens, and there may be more alien corps on Ganymede.

Third, we need to guard against Ganymede's magnetosphere. Europa is the only moon in the solar system to have a magnetosphere, and it has a long-standing magnetic moment that is independent of Jupiter's magnetic field.

The magnetic field in Ganymede's equatorial region is facing Jupiter's magnetic field, which makes it possible for its field lines to reconverge, increasing the power of the Ganymede magnetosphere.

The long-standing magnetic moment carves a space around Callisto, forming a small magnetosphere embedded in Jupiter's magnetic field.

Finally, we believe that Europa has an ocean under ice. Based on data sent back from satellites, we believe that beneath the ice of Ganymede is a layer of liquid water several miles thick.

Europa has an iron core, and its core also retains the heat from the formation process, which is slowly released into the icy mantle, which, combined with the strong pressure from above, melts the ice there, creating a living space for the aliens.

In summary, we believe that Europa is an important breeding site for Xenomorphs, and that there will be a large number of Xenomorphs there, and they should be hiding under the ice.

Therefore, our landing force should be prepared for diving operations. ”