The battle clouds outside the C4 fortress were thick, and the three fronts of the Zerg army were launched at the same time, and they lined up in a neat attack formation exclusive to the coalition army, attacking the fortress at a very fast speed.

Through the battlefield projection, the officers and soldiers of the coalition defending the fortress could observe the specific actions of each Zerg, and when they saw that the battle formation they were extremely familiar with was perfectly reproduced by the Zerg army, their hearts were mixed for a while.

The Zerg arrangement is the most proud of the coalition officers and soldiers of the offensive battle formation, is the first choice of the coalition fleet to attack the Zerg defense line, this formation can not only greatly maintain the speed of the assault, but also take into account other effects such as fire suppression, the coalition forces are also after countless modifications and actual combat tests before finally this set of combat law type and has been used to this day.

In fact, even within the coalition forces, not all fleets can reproduce this kind of battle formation, and its excellent effect makes it very demanding for the mutual cooperation between various units of the fleet, and it is difficult to form a fleet that has not been tempered on the battlefield for a long time.

However, the Zerg army can control these Zerg through brain worms, and directly regulate the Zerg camp with its own will.

Therefore, this kind of battle formation will be more powerful in the hands of the Zerg, and the trouble it will cause to the coalition fortress will be greater.

The Zerg's camp quickly pressed, and they did not dare to be careless in the face of the allied forces they were most familiar with, and they did not dare to give them too much room to play, and as soon as the Zerg troops stepped into the range of defensive firepower, the coalition forces started a firepower attack.

Almost instantly, the charged defensive firepower of the fortress exploded instantly, and thick laser beams burst out of the air, directly rushing into these camps of the Zerg. Clusters of high-energy laser energy exploded, and a large number of Zerg were completely incinerated by these scorching energy, and instantly turned into nothing.

At this time, the advantages of the Zerg mine-clearing battle array were highlighted, because of these wars, these high-energy attacks were all absorbed by the front row of the Zerg, and almost none of them affected the long-range Zerg troops in the rear.

However, of course, the coalition forces will not give up and immediately launch a new round of attacks, but this attack is not as long-term as before, but a short-point attack towards the target, and countless shiny attacks are shot from the defensive artillery in the fortress, and finally exploded in the Zerg camp.

Under this kind of dense firepower, if it were to be replaced by a coalition fleet, it might have already chosen to retreat or find another way to attack. But the Zerg apparently don't have this concept.

No matter how great the losses, the Zerg army has only one purpose, and that is to advance until the coalition defenses are captured.

The Zerg's frantic attack regardless of casualties was also fruitful, and after paying a heavy price, the distance between the two sides was slowly narrowed, and soon they reached the range of the Zerg's long-range troops.

The Zerg troops, who were finally able to attack, were naturally not polite, and immediately launched their own powerful attacks.

"Thor"'s attack and destruction ability is very amazing and its scale is very large, although due to the limit of firepower, their energy attacks were lost in large quantities on the way, and the damage ability was greatly reduced, but through concentrated fire attacks and other means, the coalition fortress still suffered losses.

Fierce firing broke out between the two sides in an instant, and the battle continued.

Under the desperate attack of the Zerg, accompanied by a series of violent explosions, the outermost defensive planet of the coalition began to crumble after several hours of fierce siege by the Zerg, and finally showed signs of falling.

The coalition had already expected this, but there was nothing to be done to reverse it, and they could only watch the gradual fall of the planet.

In the end, the defense of the planet finally lasted for three hours again, and finally some of the Zerg troops who desperately approached the planet dropped some small Zerg and covered the successful landing of these small Zerg with their own lives. In the end, it was up to these small zergs to take down this defensive planet from the inside.

On this local battlefield, the Zerg won the final victory, but for this victory, the Zerg paid nearly 20 million casualties.

While they were desperately attacking the planet, the main fortress and the other defending planets took the opportunity to suppress their firepower, causing them to suffer heavy casualties.

After this local battle, the results obtained couldn't help but make the Zerg commanders think about whether this attack was worth it.

And the answer in reality is already very clear to them...... It's not worth it.

The Zerg consumed such a big price, and in the end, it was only a defensive planet for the coalition.

After the coalition forces lost this planet, there were still seven, and there was also a main fortress that was even bigger than the defense planet, and it was necessary to break through these defenses one by one, and I believe that there should be a rough estimate from the battle just now.

However, the war has developed to this stage, and it is so likely that the Zerg will choose to retreat so easily. And so, a new round of attacks began.

The troops that had been besieging the defensive planet immediately turned around and began to attack the nearest defensive planet.

This time, the Zerg also summed up the experience of the last attack on the defense planet, and prepared to launch a final blow from the planet's interior.

And their tactics are to send superior troops to carry out large-scale firepower suppression, and then the transport force desperately sends a large number of small Zerg to the target planet, and uses these small Zerg as a means of attack to eliminate the coalition soldiers inside the planet from the inside, so as to solve those deadly firepower.

The Zerg had such an idea, and their approach was faithful to the execution of this idea.

Soon, under the cover of the heavy defense Zerg, the Zerg's long-range attack force endured huge damage and advanced to the effective killing range, and began to suppress the target planet, and its main targets were placed on the planet's oversized and large-caliber defensive artillery.

The effect of this approach is very significant, a large number of transport zerg transport troops carrying a large number of small zerg under this kind of fire suppression successfully approached the defense planet, just when they were about to rush into the distance where they could drop troops, the planet's far denser close defense artillery system with much greater density of heavy artillery was fully turned on.

The defense planets of the coalition were not originally designed and produced for joint operations, each of them is an independent combat system, so a strict short-range defense system is naturally necessary for each defense planet.

These defense systems are not used in general defensive operations, but are only used to defend against tactics such as the Zerg that use landing forces.

The reason why the Zerg were able to successfully land before was because the Zerg had been indiscriminately attacking on that planet for several hours before landing, and those basic close defense systems were basically damaged, which allowed the Zerg landing force to succeed.

This time, the Zerg focused its main efforts on suppressing the large defensive artillery of the defending planet, and did not fire at all on other areas, which means that the entire landing force of the Zerg will face a full set of close defense systems in an almost perfect state.

A close-quarters strangulation battle ensued.