Doomsday Bunker Upgrade

While Chen Xin was preparing the excavation plan, the military also slowed down their offensive. They abandoned some caves and tunnels that had already been dug down, and turned to hold on to the areas that had been stabilized, and bombed them in a planned way. Many passages blocked all the paths for the alien creatures to break through upwards, leaving only some holes for their own use.

After such adjustments, the military only needs a small number of troops to guard the few main passages that have been left out, and then they can seal off the passages for the alien creatures to attack upwards.

And because of this adjustment from offense to defense, most of the troops that were originally prepared to attack the underground were temporarily idle.

The military didn't really let these troops idle. Apart from letting them continue to monitor the entire Dongting Lake area to prevent alien creatures from digging new passages out of the ground again, they let these troops prepare for the next cleanup operation. get ready.

The military's offensive has not been very smooth before. On the one hand, it is due to the relationship between weapons, and on the other hand, it is also because it has not yet adapted to the underground tunnel environment.

Also because of this reason, the military intends to conduct a reorganization of the existing troops during the three months of the excavation work, adjust the state and tactics of the troops, so that they can play a stronger role in the subsequent clean-up operations. At the same time, it is more suitable for combat in underground caves and tunnels.

For this reason, the military specially reserved a small section of tunnels that were close to the surface without being completely sealed, and opened it up to the ground, and put idle troops into the tunnels in rotation, and fought with the combat sub-units in the tunnels to study Tactics for fighting in tunnels and caves.

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

By continuously putting various troops into the tunnels to fight, allowing them to find out more applicable tactics, and directly conducting actual combat tests, the military quickly found out a set of applicable tactics, and quickly promoted them. to all the troops.

However, the military was not satisfied with this. On the one hand, they continued to let the troops explore tactics, and on the other hand, they approached Chen Xin, hoping that he could provide some more practical equipment for underground warfare.

Chen Xin had expected the request from the military. After all, the military had already made relevant requests when discussing the attack plan several times before.

It's just that Chen Xin didn't have any good ideas for the request made by the military.

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

Moreover, due to the narrow and complicated terrain in the underground tunnel, heavy firepower such as various artillery can not be used at all. After all, one cannon can only be fired more than 100 meters before it will blow to the stone wall. Collapse, no matter how hard the military is, it will not use heavy weapons in this situation.

Even the Titan's portable cannon was abandoned in favor of only the rotary machine gun.

However, even if it is a revolving barrel heavy machine gun, there is still the problem that bullets will ricochet when they hit the rock wall.

This had a great impact on the advancement and combat of the troops, and it also made it really difficult for the military to achieve more impressive results in previous operations.

And this also made Chen Xin have great restrictions on the conception of new weapons.

According to the requirements put forward by the military, all Chen Xin could think of was to toss on the small platform of the military's existing Bobcat assault vehicle, or design new weapons for the Titan.

The Bobcat assault vehicle is a small multi-functional vehicle platform mainly equipped by the military. It has many advantages such as light weight, small size, multiple functions, and strong adaptability. The Army developed a series of Bobcat assault vehicles before the disaster. The series of modifications formed a car family.

Among these modifications, there are many crazy modifications such as 40mm assault guns and 120mm mortar howitzers.

You must know that the Lynx assault vehicle is very small in size. The length of the 6*6 body is only about three meters, and its own weight does not even weigh a ton.

However, even if the Lynx assault vehicle can resist 120mm caliber cannons, it cannot shoot effectively in an underground tunnel environment. The military is not crazy enough to use artillery of this caliber to fight tunnel warfare, so most of the time it is still the A model equipped with a heavy machine gun or a small-caliber artillery.

Even so, there are still many problems encountered during use.

This has also led to the military's urgent hope to solve the problem of being unable to use powerful weapons in underground tunnels, and to be able to put various heavy weapons into combat to gain victory.

However, powerful weapons are all big bombs. In order to pursue the killing effect, the 85mm grenade can produce about 900 effective fragments, which can kill the enemy within a range of 280 square meters. In narrow tunnels, it is often a single shot. All hurt.

This led to the fact that even though Chen Xin had a system, he really didn't think of any good ideas.

After all, the powerful weapons that the military want are all of this virtue, the greater the power, the larger the area of ​​damage, it is really not easy to use in tunnels.

In the past, the military mainly relied on heavy mechas and Titans to open the way, and achieved certain results.

But this also caused terrible losses to the Titans and heavy mechas. The conclusion drawn from the logistics statistics is that the number of Titans and heavy mechas lost during the rework period of the military is more than the total losses in the previous defense phase. more!

And more critical is the loss of the driver.

The heavy-duty mechas in the tunnels are okay, at least they are not that big, and there is still room to maneuver and dodge, but for the Titans, one can almost block a tunnel, only in some spacious caves. There is no room for dodge, which undoubtedly made the Titan withstand a lot of attacks, and also caused the driver's casualties to rise sharply.

Faced with such a situation, Chen Xin himself was eager to produce heavy firepower that could be used in an environment like underground tunnels, so that the military could exert stronger combat effectiveness in the next battle.

After all, even if excavation is used to launch subsequent operations, the military still has to go deep into the underground tunnels to fight. If there is no investment in new weapons, it may be difficult to reduce casualties and equipment costs only by changing tactics. loss.

But this is not something that can be done easily. Even if Chen Xin can save a lot of research and development time, he has no clue and inspiration at this time, and he can't think of how to solve this problem.

Scratching his head in distress, he crumpled up the draft paper covered in various thoughts and threw it to the corner. Chen Xin fell into a dilemma: "The road of live ammunition weapons will not work. Could it be that Should non-live weapons be considered?"