"First of all, you need to pay attention to the edges, which is the top priority." Wang Xuexin walked around the top of the mountain with a shovel, and pointed to several positions and said: "For example, this, this, and this, you can throw grenades from the back slope to the front slope. If you don't use it, you will be a fool."

As he said that, Wang Xuexin pointed to one of the positions and said, "Especially this section, the other side is a cliff more than ten meters high, and the Japanese cannot attack from here. Our army's grenades can block the Japanese's mountain road up the mountain with one swing to the opposite side... This will directly affect the enemy's troops and ammunition replenishment!"

The instructor hurriedly wrote it in the notebook.

Li Yunlong and Zhao Gang nodded repeatedly as they heard this.

Among them, Li Yunlong, especially, he thought that the reverse slope tactic was just a helpless compromise and could not take much advantage of the fight. Now that Xiaodongbei said this, he found that the facts did not seem to be the case.

"The first line of defense fortifications in the reverse slope is best to be built at a location fifty meters away from the top of the mountain!" Wang Xuexin continued: "If it is too close, it is easy to fall into passive hand-to-hand combat. If it is too far, it will be detrimental to our counterattack."

Zhao Gang didn't understand much, but Li Yunlong understood it. He muttered: "This little Northeast has two tricks. This is like fighting for decades!"

Looking at Zhao Gang's confusing expression, Li Yunlong explained in a low voice:

"If the defense line is too close, the Japanese just need to fire a row of grenades forward, regardless of whether they can explode or not, and rush down with a bayonet with a bayonet... we will be trapped in a 'passive hand-to-hand combat'."

"At this time, the Japanese were ready and condescending, and we didn't even have time to get a bayonet. In addition, it was inconvenient to stay in the trenches, so we probably had to wait for death."

"If the defense line is far away, it will be difficult for us to counterattack the top position. We will be suppressed by the Japanese firepower."

"The distance of fifty meters is not too much or too little. That is to eat tofu without teeth, just right!"

"We have time to defend, guard and react."

"We rushed up and approached the distance of grenades in a few steps. No matter how many grenades were swung up, they would rush up if they were fucked. Can the Japanese still withstand it?"

Zhao Gang also felt that it made sense after Li Yunlong's analysis.

I thought to myself that there are so many things to do with this reverse slope tactic. Xiao Dongbei is really a talent. He who has no military academy experience can actually think of these!

Later one day, Zhao Gang really asked about this.

Wang Xuexin answered this: "Political Commissar, this is nothing! I just... I usually think about two teams of soldiers, one team is the Japanese, and the other team is us, and then the two teams of soldiers fought day and night in their minds. This tactic came out like this!"

Zhao Gang heard it and said "Oh": "That's right, this is imagination! War requires imagination very much! Xiaobeidong, you have become a fucking tactician!"

Wang Xuexin really dared not call him a "tactician". This is actually something that the volunteers deal with the Americans, and he just used it.

In addition, there are also connections between surface fortifications and underground fortifications, as well as three levels of defense systems, as well as mutual cover and tactical coordination between the "backward inclination" and the "front reverse inclination" and so on.

Trail fortifications are much more complex, more flexible, and more useful than tunnel warfare.

This made even Li Yunlong, the commander who was called "there is a set on the battlefield", was stunned.

Then Zhao Gang sorted out the construction plan recorded by the instructor into documents every day, and carefully arranged the topographic map, and then sent it to the headquarters.

The chief was as if he had obtained this document. He happily said to the chief of staff: "This little Northeast gave us a big surprise! I have thought that this reverse slope fortification could play a role, but I have never thought that it would have such a big effect! These ones all seem to make sense. It should be said that they are not 'one by one', but a complete defense system. I don't believe that the Japanese can break through such a defense system!"

The Chief of Staff looked at the illustration map and nodded convincedly, saying, "This is indeed of great significance! In this way, it means that we are likely to have our own permanent base, and the era when the Japanese 'cuttled through the base' is gone forever!"

The leader nodded heavily.

The hardship of the Eighth Route Army lies in its inability to stop the Japanese's attack.

In many places, it is not that the Japanese cannot fight, but that there is no need to fight.

For example, when attacking Zhaojiayu, after a long time of fighting, a lot of ammunition was wasted, it was found that the Eighth Route Army and the people had retreated into the mountainous areas and even the grain had been transferred.

What is the value?

What's the point?

It is a waste of troops and ammunition.

But everything has two sides.

Guerrilla tactics made the Japanese unable to find the main force of the Eighth Route Army. The Eighth Route Army also had to make preparations for transfer at any time, even the headquarters and the arsenal were no exception.

The headquarters is fine, but it is a problem with the construction of communication equipment.

The arsenal is a big problem. In order to adapt to guerrilla warfare, the arsenal cannot build large-scale equipment or fixed equipment... If the belt is tightened and the large-scale equipment is invested, what should I do if the Japanese come? What should I do if I can't transfer it? Should I blow it up or leave it to the Japanese?

But now, if such a backscene fortification can block the attack of the Japanese, the mountainous areas will be walls for the Japanese, one line of defense, and an endless position where repeated battles can be fought for tug-of-war and attrition.

This gives the Eighth Route Army a permanent living space and development space, and can be confident and boldly increase investment in long-term development.

It feels like a prodigal son wandering outside suddenly found a home, and he no longer has to go with the flow like duckweed like before.

Thinking of this, the chief of staff no longer hesitated and immediately handed the documents to the Chief of Staff and ordered: "Immediately print a few copies of these documents and send them to the troops stationed in the mountains, so that they can study them carefully and build back-sloping fortifications and tunnel fortifications as soon as possible."

After pausing, the leader explained again: "The records in the small northeast cannot be cut off or delayed. I heard that the independent group lacks documents, so a few documents can be sent from the headquarters! If there is a missed record, it will be bad. At the same time, you can also learn on-site and understand more and more comprehensive tactics! This is not careless at all!"

"I have no objection!" The Chief of Staff immediately agreed: "I think we should send three groups of people to record each eight-hour work hours to prevent any thoughts from missing!"

"It's right!" The leader nodded: "That's it!"

So, Wang Xuexin was sadly aware that even when he was eating and sleeping, he had a document recording it with a small notebook.
Chapter completed!