Of course, digging tunnels is not so easy to dig, and the walls and foundations of the human base are dug quite deep and very strong, and it is not wise to dig tunnels and detour with a mechanized squadron that does not even have a serious engineering establishment.

Of course, they succeeded in the end, but they did not simply rely on professional engineering equipment to dig it out little by little, but by some external forces. Few of this mechanized squadron actually ended up making it back alive, but judging by the shocking explosion, the explosive yield they used was definitely not small.

The pirates in charge of the excavation naturally died in the explosion, and only a dozen lucky machine gunners survived. During the subsequent interrogation of these machine gunners, Black Rose and the others learned the truth about the explosion.

Ordinary explosives simply cannot pose any effective threat to those thick walls unless the yield is quite large. Moreover, if they are doing these things underground, they can easily be detected by high-alert enemy forces, so they need to dig through them quickly and then quickly detonate enough explosives to blow up the walls.

Eventually, they were assisted by a medical soldier from an independent company of Unit A1 who did not want to be named, and an infantry squad who was passionate about collecting specimens. According to the guy's own account, when he was at the Insect Base in Agrea, he asked for a complete biological sample of the Poison Blaster from the swarm of Behemoth - in fact, he asked for a whole set of samples, and threw them all in the barracks' operations lab.

According to his analysis, the explosive power of these poisonous explosion insect samples is quite staggering, and there are few parts of the current human material system that are effective enough to withstand their damage. Even if a battlecruiser detonates one or two poisonous explosions at a critical point, it is powerful enough to destroy the entire battlecruiser from the inside.

Given that there was only one sample on hand, they couldn't really test it. But the pirates don't care if they test it or not, they just take it and use it. After a long day of hard grinding, the guy reluctantly agreed to give them a tissue sample of the poisonous blaster, and the pirates paid the price of hundreds of credits - of course, they obviously didn't need it now.

Then the group of pirates also went to the sapper squadron to borrow some construction machinery, and then ran to the war situation office to get information on the weak points of the wall. Then the mechanized squadron's fire chariots and vulture chariots began to make noise around the perimeter of the base, pretending to attack the base, so that Orran's mercenaries focused on them, and even went out to fight with them. Then a small team of people dug all the way to the bottom of the city wall along a carefully planned route from the perimeter, and then directly detonated the complete sample of the poisonous explosion worm.

It would be an exaggeration to say that the entire city wall collapsed directly, "but that section of the city wall was like a hangover old William." In turn, they promptly called for artillery support from the siege tanks of the armored squadron. The Black Rose Ground Front Commander, who had been paying attention to this group of mechanized squadrons that were causing trouble everywhere, also reacted in a moment.

At this time, the decisive battle had actually begun without anyone expecting it - of course, the mechanized squadron did think of it, and they were indeed the first to storm the base through the gap in the collapsed wall.

Although the surviving pirates were eventually confined for trepiacity and disobedience, they were also rewarded with credits and a case of Tasanis No. 8 Whisky, which was a personal reward from Black Rose. Since then, they have all been nicknamed "Oil Explosion Squadron".

When the gap in the wall was blown open, the whole decisive battle had actually begun, and Orran's mercenaries began to quickly assemble towards the gap to defend against the attack, while the mechanized squadron rushed to the gap like crazy, saying that they would hold the gap to give the follow-up troops a chance to attack.

They did wait for reinforcements. When the mechanized squadron acted on its own, the commander of the ground forces assigned an armored infantry squadron as a backup to ensure that the squadron could be prepared for its retreat at any time - he really didn't expect this group of guys to succeed.

After learning that the squadron had successfully blown up a gap, the closest squadron immediately dispatched to reinforce the mechanized squadron that was fighting desperately on the front line. At the same time, all of Black Rose's troops on combat readiness immediately marched towards the gap. The ground commander also quickly reported the situation to the fleet command.

The fleet command was also confused at first. However, a coordinated response was soon made. Mira Han's pirate forces were tasked with pinning down enemy reinforcements from other bases on the perimeter, while A1's forces immediately supported Black Rose's ground forces from the flanks and launched a full-scale assault on Orran's main base.

Milla Han's fleet was at this point. When it was learned that the ground forces were fighting hard, the support ship, which was full of missile launchers, rushed directly into the atmosphere, and without looking at the fighters of both sides who were fighting fiercely, it directly fired two rounds of missiles after roughly locking on to the main base.

The battleship crashed in the end, of course, and it is said that Milla Han asked Renault for compensation afterwards. It was really an interstellar "arsenal ship" full of missile launchers, and at least hundreds of missiles came down in one round, all of which were short- and medium-range ground-to-ground tactical missiles. There were thousands of them in two rounds, and the entire Orlan base was blown up in a mess.

If you want to say that you can finally take down Orlan's base, the credit is definitely indispensable to this battleship. In the end, the battleship was sunk by Orlan's anti-aircraft fire, and the crew was also lost, but pirates are pirates. After the crash, the crew directly picked up the guy and continued to attack.

There is nothing to say about the ensuing battle. That mechanized squadron actually failed to hold the gap. In the end, this decisive battle was still a war of attrition, and Orlan's mercenaries were at an absolute disadvantage in terms of numbers, so naturally they could not consume the troops of A1 and Black Rose, and they rushed in through the gap.

There was no suspense after rushing in, and Orran's mercenaries began to surrender one by one. During the final assault on the planetary fortress in the center of the base, Mira Han's battleship, equipped with the Draken laser cannon, came directly from the atmosphere and forced Orran out of the fortress and surrendered.

The operation ended in a victory for Yang Yi's side. After clearing the battlefield, the fleet quickly turned away from the asteroid.