In Kong Jie's view, for the Eighth Route Army, the use of tunnel tactics in the process of fighting behind enemy lines is a typical example of flexible use of "geographical advantages".

Even in the Taihang base area, where the surrounding areas are mostly mountainous, there are also some relatively gentle areas, and you can use a combination of tunnels and tunnel tactics to play.

The main thing is that the tunnels dug up secretly can play a huge role in hiding and transferring troops.

So that the enemy is in the light, and we are in the dark.

The troops are secretly hidden and transferred, so that the enemy cannot detect them.

It's like whack-a-mole, all you can do is wait for the gopher to come out of its burrow and then hit it hard.

And it's never possible to predict in advance which of the many burrows a gopher will emerge from.

Some of the tunnels that were widely spread in the villages on the outskirts of the Independent Regiment's base area were quite hidden.

Most of these tunnels are excavated two or three meters below the soil layer, due to the delicate and reasonable internal structure of the excavation, and the soil in the north is relatively dense and hard.

The interior of the tunnel is relatively stable.

The only way for the Japanese to enter these underground passages is to find the entrance to the tunnels.

And even if the entrance is found, the devil may not be able to sneak attack through the tunnel.

In the network of tunnels extending in all directions, the soldiers of the Eighth Route Army also set up guards at some key nodes.

If there is a Japanese army entering, it will be detected at the first time, and then quickly and completely block the one-way passage through emergency means.

The passage port discovered by the Japanese invaders was completely useless.

In addition, the entrance to the tunnels is kept secret within the Independence Regiment.

Only the fighters within themselves know the location to beware of leaks.

Where are these tunnels hidden in the village?

Some are built under the stove, and the surface is still covered with stove ash.

Some are even built in chicken pens with a layer of wooden planks on top of them, which blends in with the surrounding environment.

It's not easy to find such an entrance if you don't know it in advance.

For the Japanese troops passing near the village, it was better to have more than less.

Once when he was sweeping the independent regiment, the losses he suffered in the large and small villages in the base area of the independent regiment are vividly remembered.

The Eighth Route Army likes to use villages to engage in mine warfare and sneak attacks, which is often in the impression of devils.

As they passed through the village, the Japanese soldiers subconsciously wanted to avoid the village, even though the village seemed to be dead silent, and there was no one in the village.

In order not to delay time, the Japanese officers were also afraid of the traps left by the Eighth Route Army in the village.

So for the empty village, just sent some scouts to roughly search.

Then just move on.

Therefore, for those hidden underground passages hidden in the villages, and the soldiers of the Eighth Route Army who are hiding in the passages.

The devil is unaware.

The Japanese army probably could not have imagined that this small independent regiment would dare to be so rampant that they would take the initiative to put their army into the base area, and then close the door and beat the dogs.

At the same time, the Japanese troops in several other directions, including those advancing to the new 1st and 2nd regiments, as well as the other Eighth Route Army, were blocked by the troops of the Eighth Route Army.

Although the units did not understand the purpose of the sudden advance of the Japanese army.

However, according to the orders of the superiors, the various departments would never watch the devils go deep into the base area, so they relied on the terrain, topography, and the defense construction of the base area to launch layers of resistance against the Japanese puppet army.

Naturally, this greatly slowed down the advance of the Japanese army.

And for the devil officers of the Japanese command, everything was also expected.

"Resist, the more fierce the resistance, the more effective our iron rolling sweeping tactics will be, and when the lines of the two wings are closed, these dirt roads will know the power of our new tactics."

In the daily temporary headquarters, the captain of the devil brigade spoke coldly.

But the news from the periphery of the independent regiment's base area was:

There was no resistance along the way, and there was no Eighth Route Army or ordinary people in the guerrilla areas and villages of the Eighth Route Army along the way.

This inevitably made the devil officers of the command hesitate and feel a little uneasy at the same time.

The defense area of the Independent Regiment has always been the most vigilant place for the devils.

As a result, there was no hindrance in the advancement.

This seems so unusual.

However, this time the iron bucket sweep, with the advancing team, it is impossible to bypass the defense area of the independent regiment.

The Devil Command had no choice but to order the troops advancing to the base area of the Independent Regiment to be more and more vigilant and beware of the tricks of the Independent Regiment at any time.

…… The defense area of the independent regiment was obviously the first among the regimental defense areas to come into contact with the Japanese advance troops.

However, by the time the battle at the independent regimental defense area began, the fighting in the other regimental defense areas had already broken out for almost two hours.

What were the soldiers of the Independent Regiment doing during this period?

After the Japanese advance troops crossed the village, some of them quietly came out of the secret tunnel entrance, and then laid mines, trick mines, and side bombs under the road under the road of the Japanese army according to the plan.

In short, set traps everywhere, and first do a good job of closing the door and beating the dog.

In order to block the devil's retreat, Kong Jie made a bloody investment this time.

The regiment's explosives, grenades, and mines production plant, a whole month's inventory was used for this ambush.

Each team hidden in the tunnels arranged a minelaying team in advance, which was specifically responsible for blocking the retreat of the Japanese army.

In addition, it is necessary to lay mines one after another, not densely packed together, and to give full play to the "strange" and "treacherous" characteristics of landmines.

The main force was set up on the periphery of Zhangjiazhuang and Xicun, and a tight fortification was built in advance.

In this way, if the entire independent regimental defense area is compared to a large square.

At this moment, the front and rear sides have been blocked, and only the left and right wings remain.

The remaining left and right wings, Kong Jie naturally will not fall.

The overall deployment is:

In the large defense area of the entire independent regiment, Kong Jie deployed five companies in the rear of the Japanese army.

This is not an ordinary company, but an elite unit made up of the most elite knife companies of each battalion.

In this regard, Kong Jie took into account that the troops blocking the back road of the devil took the greatest risk, so they needed to be elite enough, and once the situation was not right, they could fight and retreat.

In addition, in the direction of Xicun and Zhangjiazhuang, the third and fifth battalions of troops were deployed.

With the help of the increasingly perfect defense foundation of Xicun and Zhangjiazhuang.

With these troops on site, it would be impossible for the Japanese to break through their positions unless they launched a fierce attack at the cost of casualties.

The left and right flanks were handed over to the main forces of the 1st and 4th battalions.

During this period, whether it was a surprise attack with cold guns and cold artillery, or a guerrilla war with the help of terrain, it was commanded by the commanders of each battalion and company.

In addition, in the central area of the entire defense zone, the elite troops of the second battalion were also deployed, and they used the combination of tunnel and tunnel tactics to deal with the Japanese army at any time.

At the same time, they waited for an opportunity to cooperate with the troops of the Quartet, divided the entire battlefield, and ate the living forces of the Japanese puppet army one by one.

The militia brigade was dispersed and coordinated with the main force.

From God's point of view, the entire independent regimental defense area was turned into a huge quagmire by Kong Jie.

Just waiting for the little devil to jump into the quagmire by himself, constantly consumed in the frightened struggle.

This was an operation that used almost the entire strength of the Independent Regiment.

The scale is also unprecedented for the history of the independent regiment.

In Kong Jie's words, "This is a big scene, don't ask all of them to have the ability to kill devils, and bring out all the soldiers, especially the soldiers of the recruit company, follow the main force to have a good long experience." ”

"The battlefield is always the place where the soldiers grow the fastest."

As for the strength of the Japanese army in the defense area of the independent regiment, it was four brigades, plus two regiments of puppet troops, totaling more than 6,000 people.

On the side of the Independent Regiment, if you do not count the local troops and militia forces, the strength of the two sides is close.

Time goes on.

The vanguard units of the Japanese army were the first to exchange fire with the fighters of the independent regiment.

This is like a signal, a signal that makes the puppet army of more than 6,000 days shiver violently, and makes the soldiers of the independent regiment can't help but rub their hands one by one.

Fighting between the two sides was on the verge of breaking out.

The first battle broke out in a wood.

This was a certain reinforced platoon of the 2nd Battalion, which ambushed the reconnaissance squad of the Japanese army.

The fighters of the reinforced platoon were exposed in an instant with quite strong firepower, even mixed with the fire of five submachine guns.

The two sides only had a face-to-face confrontation, and the twelve devils of the Japanese reconnaissance squad met with the emperor.

"Withdraw—"

After defeating the devils, there was not even time to clean up the battlefield and capture equipment, and the platoon commander gave the order to retreat as soon as possible.

Boom –

The devil's follow-up artillery fire immediately smashed over, and the grass and trees in the mountains and forests were destroyed.

Looking at a sea of fire dozens of meters away, the platoon commander who withdrew from the long-scheduled retreat route with the soldiers in time said with palpitations:

"This little devil of the dog day, don't you want money for shells?"

"Fortunately, we retreated quickly enough, and just this round of shells fell down, and one of our companies was also disabled."

"Platoon commander, what should we do now?"

"Continue to harass the enemy in the movement and find a way to expose the artillery positions of the devils."

"The little devil hasn't been rampant for long, after the coordinates of the devil's artillery position are transmitted back, our artillery company is not vegetarian!"

"knocked out the devil's artillery position, and these little devils will be cleaned up later."

"Yes!"

……

The command of the Japanese Vanguard Brigade.

The captain of the devil brigade took the binoculars and looked at the situation in the woods after the bombardment, and a cruel smile hung on the corner of his mouth.

His words carried a bit of confidence, "Judging from the firepower exposed by the Eighth Route Army, it should be the main force of the Independent Regiment, and if this round of artillery bombardment continues, the other side will either be killed or disabled." ”

He was still waiting for news, and soon after the communications corps returned, reporting:

"Report to the commander, there is no trace of the Eighth Route Army in the shelling area, only the corpses of our soldiers, and the reconnaissance detachment has all been killed."

"Nani? Yaga! These damn dirt roads run faster than rabbits. ”

The originally confident smile froze on his face, and the captain of the devil team couldn't help but scold angrily.

……

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