Li Xin led the seventh team out of the hangar.

The troops quickly crossed the open area outside the Behemoth Steel Plant and arrived at an entrance.

After entering the Behemoth Steel Works, you can hear the sound of gunfire coming from underground just on the surface.

In the cockpit of the mecha, Jiang Lou's voice rang in Li Xin's ears:

"I won't say any more. Everyone, take the new recruits underground. Be careful and alert, and pay attention to their mental state!"

"Now is a good period for adaptation. I hope every team can make good use of this time before officially entering the battlefield!"

"Yes! Captain!"

Small teams, along with their auxiliary soldiers, passed through the underground entrances and exits and entered the underground world of the Behemoth Steel Plant.

The entrance and exit of this underground passage, which is eighty meters wide and forty meters high, is like a bloody mouth, ruthlessly devouring each mecha unit.

Not only the mecha troops and their auxiliary soldiers, but also some Heng'an Defense infantry and armored troops.

They also gradually entered the underground in small groups.

Each combat team of the Second Squadron entered the underground three minutes apart.

From this moment on, the recruits need to feel the atmosphere of the battlefield.

They don't have much time to adapt, so of course they come as quickly as possible.

The fewer comrades around them, the greater the tension and excitement they feel, and the better their adaptation effect.

Li Xin led the team's three mechas and eight tracked armored vehicles into the underground.

The next moment, the light of the surface world temporarily separated from them.

The heavy footsteps of the mechas and the sound of the tracked armored vehicles moving echoed in the passage.

There is no light at all in the passage, and if it is an infantryman, the visibility will be very bad.

The mecha is much better. Although it is not as good as in daytime with light, it can still see things clearly.

And with the assistance of psychic power and radar, the effect is quite good.

"Form a squad into alert formation and advance!"

Li Xin's voice rang out in the team channel.

"Yes! Boss!" The three recruits responded quickly.

Four mechas formed a diamond-shaped guard formation and advanced, with the mecha driven by Wei Gan at the front.

On the left and right sides are Ling Yangping and Gan Hongcai.

The last one is Li Xin’s mecha.

This is the normal squad marching and combat formation. Wei Gan's melee ability has reached D3, so he will serve as the vanguard.

Li Xin is the team commander, and unless necessary, he should be in the rear.

Li Xin is the soul of this team.

Anyone can die on the battlefield, including the commander.

But if death is to be ranked in order, then any normal army should ensure that the commander is the last to die.

Because if a soldier dies, it may be just one soldier who dies, but if a commander dies, it means that almost all the troops have lost their command.

Even if a new commander takes over the command, it will not be as good as before.

If a soldier dies, he is the only one killed; if a commander dies, an entire army may be lost.

Just like Li Xin's team, if the vanguard Wei Gan died in battle, Li Xin could still continue fighting with the remaining two recruits.

Even after the war, it only needs to recruit a new soldier to restore its current combat effectiveness.

But if Li Xin died in battle, the team would be finished. Apart from anything else, it would be a question whether the three of them could survive on the battlefield.

Of course, Wei Gan was not at the front. In front of him, there were two tracked armored vehicles, and the auxiliary soldiers inside were the real vanguard.

"Be careful and alert. Although there is basically no danger here, all actions need to be carried out according to the training manual!" Li Xin continued to give orders.

"Yes! Boss!"

The mecha troops advanced slowly, as if there were real enemies defending ahead.

Each tactical move, each reconnaissance and preparation action was completed one by one.

Li Xin and his men were training here, but ahead they were in the middle of a real firefight.

"boom!!"

“Thump, thump, thump!”

The sounds of various weapons firing and explosions continued to echo underground.

Originally, the walls in the underground space of the Behemoth Steel Plant had very good sound insulation.

After all, this is a casting and forging place, and it is an underground space. If there is no sound insulation and radio reception, the noise will drive the employees to nervous breakdown.

But after several repeated battles, the area below was already in a mess, and the sound insulation effects were also destroyed along with the fighting.

The sound of fierce fighting could almost be heard throughout the entire underground space.

"Boom! Boom! Boom!"

“Rustle!”

The violent explosion even caused fine sand and dust to fall down from the passage.

After moving forward a certain distance, the mecha stopped moving forward. If it continued to move forward, it would have actually reached the place where the firefight was taking place.

At this time, the forty mechas of the first squadron were fighting with the enemy in front.

Of course, not all forty mechas were deployed at the same time, and the place where the firefight took place could not accommodate so many mechas.

In the C1 area, the enemy's resistance was also quite tenacious, with intensive sounds of gunfire and explosions everywhere.

Even though the fighting had been so intense up front, it would probably take the troops two or three days to take over this area.

The enemy's will to resist is very tenacious, and its firepower is also very dense, including various infantry firepower points, attack vehicle firepower, and even mecha.

While Blueprint and Heng'an Defense were increasing their troops and conducting training above, the enemies of Milda's Retainers Army below were also not idle.

Under the surveillance of intelligence personnel, they also increased their troops and built many fortifications below with the help of original equipment and ruins.

Of course, these fortifications may not be able to keep the enemy out forever, but they can make the attackers pay casualties with every step.

With more solid fortifications, even with the help of mechas, the infantry of Heng'an Defense could not advance much faster.

On the second day of the battle, Li Xin took his three new recruits and left the rear passage and headed to a slightly forward position.

It was already the second day of the battle. Compared to the first day, the passion in Wei Gan, Gan Hongcai and Ling Yangping's hearts had subsided.

But after a day of adaptation, they will no longer be as excited and nervous as they were on the first day.

At least he didn't look pale or have trembling hands and feet.

Except for some battle maniacs, few people can go to the battlefield for the first time without feeling nervous.