Huh? There's a magic school here.

The professionals of the Orc Empire unleashed their best skills: some summoners summoned all sorts of helpers from other dimensions, some knights enhanced their status with various auras, and some unscrupulous mages unleashed their ultimate abilities.

In an instant, various colorful orbs of light erupted from the Dragon Kingdom's outpost, while the humans of Earth could only desperately fight back. The Dragon Kingdom soldiers even brought out the tanks and helicopters from the base; although this was a magical world, these weapons and equipment still played a role.

After all, the other party is also made of flesh and blood. Although they are tough, they can still be injured or killed if they get hit.

By this time, the professors who had come from the floating islands had almost all arrived, so Andres and Dumbledore led these professors in a battle against the enemies who had broken into the base.

Professor Severus Snape pulled a bottle of golden potion from his sleeve, opened it, and drank it down in one gulp without even looking at it. Hagrid, who was watching from a distance, saw this and asked a question out of curiosity.

"Severus, what time is it and you're still in the mood for drinking?"

Professor Snape replied with a cold expression.

"That's Felix Felicis, you idiot!"

Then he drew his wand and flicked it at a charging knight-like warrior. An invisible spell severed him, and the knight clutched his stomach in disbelief. Keep in mind, he was a knight, wearing heavy armor resistant to magic, yet he had been so easily cut in half. The knight didn't howl, didn't struggle; he simply tried desperately to stuff his intestines back into his stomach.

However, its pain didn't last long; soon, an armor-piercing bullet from who-knows-where relieved it of its suffering. And our cold-blooded Professor Snape was long gone; perhaps he didn't understand the joy of finishing off an opponent.

On the other side of the battlefield, Professor McGonagall, who usually appeared somewhat serious, was casting a Transfiguration spell on the weapons on the ground. Under Professor McGonagall's incantation, these weapons transformed into lions, eagles, and serpents, attacking whatever they could see.

While these transformed creatures caused some trouble for the enemy, their effectiveness was limited due to the lack of magic. Many were killed on the way by enemy magic or arrows before even encountering them.

After casting the Transmutation Charm, Professor McGonagall found a suitable opponent to fight.

By this time, the orcs attacking the artillery unit were on the verge of collapse. First, some were wiped out by anti-aircraft fire, then others committed suicide, leaving very few remaining. Inside the Dragon Kingdom base, they encountered fierce resistance from human wizards, limiting their ranged weaponry capabilities.

Essentially, they only served a disruptive purpose, causing the artillery to halt their attack and retreat hastily. However, this achieved Samuro's objective in sending them, because the orc forces had already stormed the first trench during this brief lull in the artillery fire.

Large numbers of kobolds swiftly traversed the battlefield, weaving through craters created by artillery fire. Occasionally, several of these high-speed runners would be pinned to the ground by incoming bullets or frozen in place by a petrification spell.

However, some lucky ones managed to escape and rushed into the trenches, baring their fangs at the humans. In an instant, human blood and orc blood mingled together, staining the land.

"Commander, let the brothers in the first trench retreat. The losses are too great!"

One of the staff officers in the command post couldn't bear to watch any longer, so he suggested a retreat to Liu Changzhi. Liu Changzhi didn't even turn his head, his eyes fixed on the screen, and then asked...

How long will it take for the artillery units to complete their redeployment?

"Five more minutes!"

"Five more minutes? What are they doing? Do they know how many people are being sacrificed every minute?"

"Notify the frontline troops that they must hold their positions firmly until the artillery fire is redeployed! Even if they all die, they must hold the line!"

From high above, Samuro watched with satisfaction as his troops stormed into the enemy lines, jokingly remarking to his men.

"Humanity is still so vulnerable, whether it's on the continent of Karen or in another world!"

"The Sword Saint is right!"

"Exactly! If you ask me, these cowardly humans don't need the adults to make the trip themselves!"

Amidst the chorus of flattery, Samuro was in high spirits. However, a hint of regret flickered across his face as he looked at the Dragon Kingdom's outpost; his air force and those brave professionals were now silent. They must have all perished there; perhaps they had achieved their goal.

As Samuro predicted, the fighting at the Dragon Kingdom's outpost was nearing its end thanks to the arrival of these Hogwarts professors. Only sporadic fighting remained; the rest was essentially over, with Dragon Kingdom soldiers cleaning up the mess.

Because it was a chaotic brawl, the orc forces actually inflicted limited damage on the humans of Earth; they only sacrificed a small number of their own before defeating the orc air force. Of the professionals scattered outside the base, only a few skilled in stealth survived; the rest were killed in the crossfire between the Dragon Kingdom's outpost and the third line of defense.

Five minutes later, the thunderous roar of artillery fire erupted again from the Dragon Kingdom's outpost. Sparks flew across the battlefield once more, and the orcs' advance stalled. Samuro's smile faded; he hadn't expected that the sacrifice of his air force would only result in a brief ceasefire.

However, even with the enemy's ranged attacks restarting, it was difficult to reverse the fall of the first trench. Large numbers of orc troops continued to charge into the trench and gained the upper hand.

"Order the troops to withdraw to the second line of defense!"

"Yes!"

Seeing that the artillery fire had resumed, Liu Changzhi decisively gave the order to retreat. Upon receiving the order, the wizards at the front lines promptly threw out all the wizard chess pieces they held. In an instant, the entire battlefield was filled with these towering figures, and the orcish attacking forces were plunged into a fierce battle.

These wizard pieces effectively held off the enemy, buying time for the Earth's human forces to retreat. After the last group of Dragon Kingdom soldiers planted the explosives, they quickly retreated to the second trench.

Chen Yongren, crouching in the second trench, watched the battle ahead with a look of astonishment. Although he felt fear inside, he remained firmly in his position, motionless. He watched the tall stone chess pieces and the towering blue-skinned giants clashing together, and then he saw his comrades, who had been pulled down from the front line, leaning against the trench in a disheveled state, panting heavily.