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Also in mid-July, Chen Yuan decided to expand the army again.

This time, the 1st, 2nd, 3rd, and 4th regiments of the Self-Salvation Army were prioritized for expansion into brigade-level combat units.

Each brigade consists of 3 regiments, equipped with a field medical station, 1 guard battalion, 1 mortar battalion, 1 engineer battalion, 1 air defense company, and 1 brigade headquarters. A total of about 6,000 people.

Among them, the mortar battalion uses mortars of the Iron Fort's own production, with a caliber of 80 mm and 50 guns per battalion.

The engineer battalion is actually composed of engineer companies under each regiment, but with one more battalion headquarters.

As for the air defense company, with the new assault rifles and light and heavy machine guns, everyone can attack the zombies in the sky. Then why is there a special air defense company in the brigade?

In fact, this is not to protect against zombies, but to protect against the same kind!

This is also a helpless move! According to the intelligence, the Xinha city side once played a show, and aimed missiles at the Iron Fortress side.

Therefore, Chen Yuan specially ordered another 8 sets of anti-missile systems from the Iron Fortress.

The four new brigades have increased by more than 17,000 troops. These recruits will start training immediately.

Because there was a foundation for militia training before, it would only take two months at the earliest, that is, by mid-September, to form a qualified combat force.

Although the new weapons produced during this period were not enough to equip these troops, Chen Yuan said: "It is better to let people wait for equipment than to let equipment wait for people." Therefore, it is still necessary to train troops in advance. ”

Chen Yuan is going to actively prepare for the Corpse King Legion that will appear in September! The army of millions or even millions of zombies has no grass everywhere they pass, even Chen Yuan also means that there is pressure!

In addition, in the past few months, the Self-Rescue Force has successively found a total of 12 large civilian passenger aircraft, 3 small propeller aircraft, 2 J-10 fighters and 1 Y-20 large military transport aircraft from various places. The number of aircraft of the self-rescue army has been significantly increased.

The airport in Gedachi has also been renovated and expanded. Sufficient to accommodate these aircraft and meet the take-off and landing requirements of large aircraft.

The pilots of the flight brigade are gradually growing, and the flying skills are becoming more and more proficient, and the adaptability is also improving.

So Chen Yuan ordered the establishment of the first airborne unit of the Self-Rescue Army, the Airborne Regiment of the Steel Fort Self-Rescue Army, which was stationed in Gedaqi.

However, the personnel of this unit were not re-recruited, but were directly recruited from the officers and men of various units of the Self-Salvation Army, and elite soldiers were selected and trained as paratroopers.

It is necessary to create the Airborne Forces, they will become a quick knife for the self-help army, and when necessary, they will be able to appear where they need to go as quickly as possible.

However, the training of paratroopers is not so fast, and it will take some time for ordinary civilian airliners to be converted into military ones. So it may take some time for this force to really form combat effectiveness.

It is also worth mentioning that after several months of construction, the Steel Fortress has built a reinforced concrete wall about 1 km long, 10 meters high and 3 meters thick in the Nark region.

Nark is the only way to enter the Greater Khing'an Mountains in the southern part of Hei Province, and the 111 National Highway and the railway pass through here. At the same time, it is also the narrowest part of the passage.

The Iron Citadel was not garrisoned by the construction of this wall, but only blocked the area except for the railroad and road.

In this way, a large number of zombies can be avoided from wandering into the mountains of the Great Khing'an Mountains from outside.

In the Great Khing'an Mountains, the largest city within a radius of hundreds of kilometers is Gedaqi, and none of the other cities has a population of more than 50,000.

So it's a relatively pure land. However, there are also mutant creatures and zombie creatures in the mountains that are more powerful and destructive than zombies.

Therefore, it is not suitable for the construction of large settlements.

But the Iron Fort has carved out a plot of about 200,000 acres of land near Gedaqi that can be used for mechanized farming. It's not much, but it's barely enough to feed the current population of the Iron Keep.

Even if the Corpse King appears in the future, the land near the Iron Castle can no longer be cultivated with peace of mind, with these 200,000 acres, the Steel Castle will not sit empty.

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At the end of July, the first batch of vehicles independently produced by Steel Castle finally rolled off the assembly line.

After two months of transformation, one month of trial production and recommissioning, the tank factory in the Steel Fort was officially opened in early July. However, production capacity appears to be lower than expected.

Originally, it was estimated that three large-scale automated vehicle production lines could produce more than 12,000 combat vehicles per year. However, after the actual transformation, it can only reach the scale of 9,000 combat vehicles per year. A quarter less than expected.

This is really no way, after the civilian to military, many technical requirements have been improved a lot, and the process has increased. In some places, full automation cannot be realized for the time being, and manual operation is still required, and the efficiency is naturally reduced a lot. But it's actually pretty good. It is much higher than the tank production line of Shenwu Pass.

The first batch of combat vehicles was produced as many as 750 units.

Of these, there are 130 tanks. Although the monthly production is not more than half of the daily production of tanks in the United States during World War II, it is still a remarkable situation for a settlement that is struggling to survive in the post-apocalyptic times.

Previously, the tank unit of the Self-Rescue Army had always remained at more than 50 vehicles. Even if only half of this batch of tanks is left by the Self-Salvation Army itself, it has more than doubled the number of existing tanks. So Chen Yuan expanded the tank battalion into a tank regiment.

In addition, there are 200 armored vehicles and 420 hunting dog fighting vehicles.

Only half of these chariots were left for self-rescue, and the other half had already been ordered. Even Shenwu Pass only got 20%, the other 20% was given to Yangcheng, and the other 10% was given to Oil City. Anyway, he is also the honorary city lord of other people, so naturally he has to support it.

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In August, the new city of Oil City was finally completed.

It's a city of grandeur.

The star-shaped layout of the city, for the same area, increases the length of the city walls, allowing the human advantage in firepower to be concentrated.

There are a total of three walls inside and outside, one higher than the other, like an impenetrable fortress.

The high and low defense towers in the city are densely scattered, forming an impermeable three-dimensional defense network with the city wall, and at the same time without losing the sense of beauty.

The army in Oil City has also been expanded, and there are a large number of re-equipped equipment in the Iron Fort and Shenwu Pass, and now there are as many as 12 regiments of troops equipped with assault rifles in Oil City. More than 24,000 people.

As for the environment, just look at the smiles on the faces of the residents.

The clean and spacious streets, neat and beautiful buildings, are many times better than the dirty, messy, narrow and gloomy old town.

And the lake view here is also great, and many people will go fishing when they are resting!

(End of chapter)