Seeing that the other party actually sent four large transport planes to "put out the fire" at this time, Liu Qingshan couldn't help but smile coldly. Liu Qingshan knew that among the combat units under his command, whether it was armed rocket troops or raided motorcycle troops, they were all good at air defense operations.

Their rocket attacks can not only attack the ground, but also attack the air!

Since Liu Qingshan had already set them up to the state of "autonomous attack" before, they had already begun their attack without waiting for Liu Qingshan to give the attack order! I saw that one rocket after another shot out again, stabbing obliquely at various angles, towards the four large enemy transport planes above their heads, attacking them!

"Boom, boom~~~" bursts of violent explosions continued to sound, and clusters of dark red explosion fires came one after another as the missiles continued to hit the target! At this time, the powerful lethality of that kind of rocket has once again been well demonstrated!

"Boom~~~~" In mid-air, a large transport plane that was descending was quickly blown up directly in mid-air. With a flash of dazzling red light, it was immediately blown into countless wrecks and fragments, scattered in all directions, and fell to the ground one after another.

The last of the opponent's large transport planes finally landed on the ground, but at the moment when it finally landed on the ground, with the disappearance of its last bit of health, there was a bang, and naturally it did not escape the fate of being destroyed!

Looking at the countless wrecks everywhere on the ground, Liu Qingshan couldn't help but pout: "Damn, this, it's too unbeatable!" "Then, keep going! Purpose: Continue in a counterclockwise direction to search for the other three enemy forts!

―――――――――――――――

Five minutes later, Liu Qingshan commanded his own attack force, and finally found the enemy's second fortress! However, on its periphery, there are three Guardian heavy cannons! Moreover, behind the three Guardian heavy artillery, there are more than a dozen infantry squads distributed in each of them, and it seems that the other party has made a serious formation!

Facing this kind of enemy army's "guardian heavy artillery", Liu Qingshan also had some hesitation. He knew that this thing was definitely not so easy to deal with. This kind of "Guardian Heavy Artillery" is a land-based fixed defensive combat weapon, with a cooldown time of two seconds between two fires, and the attack distance can reach 500 meters, which has exceeded Liu Qingshan's armed rocket soldiers (400 meters of attack range) and raid motorcycles (450 meters of attack range).

In this way, it also means that when their own rocket troops attack the target, they will be the first to suffer the target's counterattack! At this time, Liu Qingshan really looked forward to having a long-range soul skill power, but under the current situation, because his sub-base had just been built, it had not yet reached that level of production, because there were still a series of combat weapons and military skills, which could not be realized. Now, I can only rely on this most elementary combat force to maneuver with the target!

"Looks like I don't have to count on any other means of attack! When the two armies meet, the brave wins! Let's fight hard! Liu Qingshan secretly made up his mind to attack!

Still, Liu Qingshan deployed the armed infantry squad that had been beaten to pieces at the forefront. It is not only the most dangerous forward position, but also the most suitable place for them. As the so-called "mercy does not lead soldiers", Liu Qingshan knows that in battle, there must be sacrifice. It is their honor to be able to let the corresponding arms sacrifice on the posts they have, and it is the glory of their combat military strength, a supreme glory!

"Rush~~~" At this time, Liu Qingshan even heard the sound of the two armed squads, which were already incomplete, doing their best and charging forward! It sounded wild, full of pride, full of determination and strength to go to justice generously.

At the same time, the machine guns in their hands also began to roar, "Da ~~~" sounded very crisp. At this time, they were already within the attack range of the machine gun in their hands, although the lethality of that machine gun was not very strong, but, after all, they had a numerical advantage!

"Ding Ding Ding ~~~ Dang Dang Dang ~~~~" As the bullets of the machine gun hit one of the three Guardian heavy cannons intensively, the crisp sound of metal collision continued to sound, and the fire of the stars also shot out on the heavy cannon. However, it is a pity that the dense bullet attack did not make the health of the heavy cannon drop quickly.

However, at this time, the heavy artillery attack finally began. "Tom tom tom ~~~" A deafening sound of artillery bombardment continued to sound, and the barrel of the heavy cannon continued to expand and contract, and between the expansion and contraction, one after another shells had been shot out, whistling, like iron balls, crossed a somewhat straight arc, and exploded above the heads of the two armed teams, or directly beside them.

"Boom Boom~~~" Immediately, the huge explosion force blew some soldiers into the air one after another, and when they fell down again, they were already too dead to die anymore.

Liu Qingshan naturally knew that if he only relied on these infantry armed squads, then it would be impossible for him to destroy those Guardian heavy artillery. On the contrary, the Guardian Heavy Artillery, when counterattacking, embodied the incomparably strong momentum, the huge and extremely lethal power of the target, but Liu Qingshan felt that his long-range firepower had to be fired!

"Whoosh~~~" armed rocket soldiers, raiding motorcycles, these are the only long-range attack weapons that Liu Qingshan has, and finally opened fire to attack. The rockets, once again dragging the gray-white tail smoke, like meteors, broke through the wind, and in the process of flying, there was a sharp whistling sound, which sounded endless.

"Boom! ~~~" Finally, one of the Guardian cannons, under the attack of the dense long-range rocket artillery, was finally blown up with the last bit of health lost.

However, just when Liu Qingshan was about to continue to attack the other two Guardian heavy artillery, he suddenly found that at this time, the enemy's Guardian Heavy Artillery seemed to have discovered their real threat, and actually locked the target of the attack on Liu Qingshan's dozen armed rocketeers and raid motorcycles!

"Boom~~~" As several shells from the enemy's guarding heavy artillery smashed fiercely, and in a few huge explosions, two raiding motorcycles were blown into the sky at once! The other two shells blew up several armed rocketeers at once......

In less than ten seconds, Liu Qingshan had already lost nearly twenty combat units! It can be said that the losses are huge! However, Liu Qingshan knew that now, he had no other better way! Only be tough and fight with all your might! 〕

Yes, now, I really have to bite the bullet and fight a real encounter with the two remaining Guardian heavy cannons. When the two armies meet, the brave wins! Now, Liu Qingshan feels that it is the most suitable for the current situation.

Now, Liu Qingshan has realized that at this time, any tactics are no longer useful. Because not only the three Guardian heavy artillery, but also the group of infantry units behind! Now, relying on the powerful attacks of the three Guardian heavy cannons, it seems that they have already seen the hope of victory! As a result, some of them have already begun to be eager to try, trying to prepare for a final counterattack against Liu Qingshan's troops with the cooperation of the guardian's heavy artillery!

However, they miscalculated the lethality of Liu Qingshan's long-range attack firepower. In the face of the almost crazy infantry strength of the opposing party, Liu Qingshan made a moderate adjustment to the attack targets of his long-range firepower in time: he specially hunted and killed that group of infantry who did not know the height of the sky!

"Whoosh~~~~" So, immediately after, one after another long-range rockets whistled out, whistling, breaking through the wind, and hitting the target accurately!

And those enemy infantry forces, in the face of Liu Qingshan's "armed rocketeers" and "raid motorcycles" long-range attacks, almost had no power to fight back! As the shells hit the target one after another, in the bursts of explosions, under the killing of the extremely strong shock wave one after another, some flew directly into the air, and some flew out directly diagonally......

Soon after, the group of enemy infantry, the group of forgetful enemy infantry, just like that, under the concentrated attack of Liu Qingshan's long-range firepower, in a short period of time, had been reduced to nothing.

"Haha, haha, damn, I want to use these two Guardian heavy cannons to destroy Lao Tzu's attack force, no way!" Now, after Liu Qingshan eliminated the infantry combat force of the enemy's group, it was obvious that he had stronger confidence to deal with those two Guardian heavy artillery!

The Guardian Heavy Artillery, now, has actually become the most difficult node to cross in front of Liu Qingshan!