Chapter 799

While Chen Xin was preparing for the excavation plan, the military also slowed down its offensive. They abandoned some caves and tunnels that had been beaten down, and instead stuck to the areas that had been stabilized. In addition, they planned to blow up many channels and seal all the roads broken by alien creatures, leaving only some holes for their own use.

After such an adjustment, the military only needs a small number of troops to hold a few main channels left, which can block the upward attack path of alien creatures.

And because of this change from attack to defense, most of the troops originally prepared to attack the underground have been idle for a while.

The military did not really let these troops idle. In addition to allowing them to continue to monitor the whole Dongting Lake area to prevent alien creatures from digging new channels to rush out of the ground again, it made these troops prepare for the next clearance and suppression operations.

Before the military offensive has not been very smooth, on the one hand, it is the relationship between weapons, on the other hand, it is also because it does not adapt to the underground tunnel environment.

For this reason, the military plans to conduct a training for the existing troops during the three months of excavation work to adjust the status and tactics of the troops, so as to play a stronger combat effectiveness in the subsequent clearance and suppression operations, and better adapt to the operations in underground caves and tunnels.

To this end, the military specially reserved a small section of the tunnel close to the surface, which was not completely sealed, and opened it up with the ground. The idle troops were rotated into the tunnel and engaged with the combat sons in the tunnel, so as to study the tactics of fighting in the tunnel and cave.

Because it is a specially reserved tunnel, the number of alien creatures in the tunnel is not as exaggerated as other tunnels. The military also has more room for trial and error and research tactics.

By constantly putting the troops into the tunnels to fight, allowing them to explore more applicable tactics and directly carry out actual combat test, the military quickly explored a set of applicable tactics and soon extended them to all troops.

However, the military is not satisfied with this. On the one hand, they continue to let the troops explore tactics, while looking for Chen Xin, hoping that he can provide some more practical equipment for underground operations.

Chen Xin had expected the requirements put forward by the military. After all, the military put forward relevant requirements when discussing the attack plan several times before.

Just for the requirements put forward by the military, Chen Xin has no good ideas.

Limited by the environment in the underground tunnel, all kinds of heavy vehicles can't get down at all. At most, some small vehicles such as SM assault vehicles can pass through.

Moreover, due to the narrow and complex terrain in the underground tunnel, heavy firepower such as various artillery can not be used at all. After all, a single shot can only hit more than 100 meters, and it will explode into the stone wall. If it is powerful, it will even lead to the collapse of the tunnel. The military will not use heavy weapons under such circumstances.

Even Titan's hand guns were abandoned and only rotary machine guns were used.

However, even for rotary heavy machine guns, there is still the problem that bullets will jump when they hit the rock wall.

This has had a great impact on the promotion and operation of the army, and it is also difficult for the military to achieve more brilliant results in previous operations.

This also makes Chen Xin have great restrictions on the conception of new weapons.

According to the requirements put forward by the military, Chen Xin can only think of tossing on the small platform such as the military's existing Bobcat assault vehicle, or designing new weapons for Titan.

As a small multifunctional vehicle platform mainly equipped by the army, SM assault vehicle has many advantages, such as light weight, small volume, multiple functions and strong adaptability. The army developed a series of modifications around SM assault vehicle before the disaster, forming a vehicle family.

Among these modifications, there are many 40mm assault guns and 120mm forced howitzers, which can be called crazy modifications.

You know, the bobcat assault car is very small. The length of the 6 * 6 body is only about three meters, and the self weight is not even a ton.

However, even if the SM assault vehicle can resist 120mm caliber artillery, it can not shoot effectively in the underground tunnel environment. The military is not crazy enough to use this caliber artillery for tunnel warfare, so most of the time, it is still equipped with heavy machine guns or small caliber artillery.

Even so, there are still many problems in the use process.

Therefore, the military urgently hopes to solve the problem that it is unable to use high-power weapons in underground tunnels and put all kinds of heavy weapons into combat in order to win.

However, powerful weapons are big explosions. In order to pursue the killing effect, the 85mm grenade can produce about 900 effective fragments, which can kill the enemy within 280 square meters. In the narrow tunnel, it is often one shot and hurt both the enemy and ourselves.

This leads to that even if Chen Xin has a system, he really doesn't think of any good ideas.

After all, the powerful weapons the military wants are all this virtue. The greater the power, the greater the killing area. It's really difficult to use in the tunnel.

Before, the military mainly relied on heavy machine armor and Titans to open the way and achieved certain results.

But it also caused terrible losses to Titans and heavy mecha. Logistics statistics concluded that the number of Titans and heavy mecha lost during the period of military rework was more than the total loss in the previous defense stage!

And more importantly, the driver's loss.

The heavy machine armor in the tunnel is OK. At least it is not so big, and there is more or less room to move and dodge. However, for the Titan, one can almost block a tunnel. There is room to dodge only in some spacious caves, which undoubtedly makes the Titan bear a lot of attacks and causes a sharp rise in driver casualties.

Facing this situation, Chen Xin himself urgently hopes to come up with the heavy firepower that can be used in the environment of underground tunnels, so that the military can play a stronger combat effectiveness in the next battle.

After all, even if the operation is carried out by tunneling, the military still has to go deep into the underground tunnels to fight. If there is no input of new weapons and only tactical changes, I'm afraid it is difficult to reduce casualties and equipment loss.

But this is not an easy thing to do. Even if Chen Xin can save a lot of research and development time, he has no clue and inspiration at this time and can't think of how to solve this problem.

Gripping his head in distress, he crumpled the draft paper covered with various ideas and threw it into the corner. Chen Xin was trapped: "the road of live ammunition weapons is impassable. Do you want to consider non live ammunition weapons?"

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