After a busy night, a few people were disgraced, they didn't find the slightest, seeing that it was almost dawn, Liao Fan marked the location on the map, and then asked a few people to fill in the hole, and took more than a dozen stolen soil Liao Fan took back for research.

The car sped away, and they soon returned to the military camp outside Datong.

"You take a few of them to take a bath, and then give them a place to eat and rest, and we have to act tonight!" Time is of the essence, and they have to hurry up, "You guys help me get these things to the room!" ”

Although Liao Fan is not a soil expert, he still hopes that some differences can be seen through these soils, but after more than an hour of research, Liao Fan's eyes are red, and he still finds nothing. But he will not be discouraged, after all, there is still one night left tonight, and I believe that their luck will not be wrong tonight.

Due to the busy night last night, Liao Fan quickly fell asleep in bed, and did not wake up until the afternoon, he didn't have time to wash, hurriedly ate a few bites of food, and then began to prepare for the night's action.

"Brother Fan, I have already given the order, tonight the 773rd Regiment will infiltrate the Japanese army's defense area, infiltrate for a day, and act tomorrow afternoon!"

In order to be covert, they had to take advantage of the cover of night to avoid being detected by the Japanese army.

"Hmm...... You can arrange the matter, you don't have to report to me, the hundred soldiers must be arranged, the clothes and equipment are provided by your division, and they must be no different from the little devils, at least they can't let the little devils find out in their clothes! ”

They can't let the fighters die because of low-level mistakes.

"I've already arranged all of this!"

"By the way, arrange a communication soldier for me tonight, if we find it, we will notify them immediately, if it is not found, we can only take the second plan!"

This kind of thing is a matter of luck, if they can't find the location of the Japanese underground fortifications, they can only take the second plan, but the second plan is very risky.

"By the way, Changsheng plans to go with us tonight, I don't want to follow you!" Li Weimin smiled.

Last night, Huang Changsheng didn't do anything, they were digging holes, Huang Changsheng was sleeping in the wilderness, these days Huang Changsheng can be regarded as sleeping in the quilt laid by the beauty, and he is not used to sleeping in the field for a while, and this is not the most critical, but he just fell asleep, Liao Fan and they were going to change places, but Huang Changsheng was walking in a daze all night, and he did not fall asleep.

Anyway, he couldn't help much, so it was better not to follow them, and after sneaking behind enemy lines and setting up his position, he would at least be able to sleep, and no one would dare to disturb him except for the little devils.

"Okay, don't go if you go to Changsheng, and you have to leave someone at home to watch the house! Wait for our good news, once the reconnaissance is clear, your division will still take the lead, and you will be busy at that time! Liao Fan thought for a while and said, there is no need to have so many commanders on the battlefield, an ambush battle commanded by the regiment commander is enough, but Huang Changsheng is required to keep an eye on his soldiers.

Huang Changsheng is not at ease with his own soldiers, these battle-hardened veterans are now doing the work of sending their lives, and they are all personally selected by him Huang Changsheng, he decides the life and death of these people, so he must come to send the soldiers.

Under the cover of night, Liao Fan drove Niu Dan and they acted again.

"Tonight we will improve our efficiency, only play two and a half meters deep, if two and a half meters deep has not found any situation, we will move the place!"

Two and a half meters underground can already defend against half of the heavy artillery, and the new 33rd Army has no aviation*, so there is no need for the Japanese army to dig the underground fortifications so deep. In order to improve efficiency, Liao Fan had no choice but to let Niu Dan and them dig shallow first.

After more than four hours of busy work, I still didn't find anything.

"Alright, fill this place, let's eat something and rest first!"

Hades didn't send hungry ghosts yet, he was busy for more than four hours, doing heavy work, and the food in his stomach had already been digested. Liao Fan had already prepared food when he came, and Niu Dan and they needed to recover their physical strength to ensure that they still had the strength to work in the second half of the night.

After eating, they plunged into the dirt again, looking for what they wanted.

The hard work paid off, and with the shovel in Niu Dan's hand making a "dang" sound, several people hurriedly made a silent gesture, so as not to make too much noise and alarm the little devil.

"Sir, there is a situation, we have found traces of ash pouring! It's over there! Niu Dan said happily.

"Take me over and have a look!"

Liao Fan was also very happy with the situation, they finally found the exact point of the Japanese army's underground fortifications, and it took a little more time for them to determine the direction of the Japanese army's underground fortifications.

It was confirmed that it was indeed the Japanese army that reinforced the fortifications with ash, but although they were sure that the underground fortifications of the Japanese army were under their feet, they were not sure whether this was an important place for the Japanese underground fortifications.

"The two of you go a hundred and fifty meters east from here and dig down, you two to the west, you two to the south, and you two to the north! Tell me as soon as you dig it! ”

At two points and one line, as long as they dig the Japanese army's underground fortifications again, they can determine the direction of the Japanese army's underground fortifications, and as long as they can determine the direction of the underground fortifications, they can find an extra way out for the soldiers who have infiltrated.

After more than an hour, they finally found the direction of the Japanese underground fortifications, and after several confirmations, Liao Fan knew that the direction of the Japanese underground fortifications was roughly from southwest to northeast.

Liao Fan drew a sketch on the map, and then handed it to the communication soldier beside him.

"Rush to the position of the 773rd Regiment as quickly as possible and hand this over to Division Commander Huang!"

At this time, it was not yet dawn, and there was still some time before three o'clock in the afternoon, and he was sure that the communication soldiers could arrive in time, and Huang Changsheng would definitely be able to understand the marks on the map, and the soldiers' way of life was on this map.

"Alright, we'll be here tonight, cover up the dug place, bury the undug place, we'll come back tomorrow night, we'll be busy tomorrow night, and you'll be free when our mission is over!" Liao Fan promised them.

Liao Fan couldn't let them go immediately, after all, people's hearts were separated from their stomachs, and no one knew if these people turned around and ran to the little devil to ask for merit after leaving, and the heart of defense was indispensable, not to mention that for the safety of the soldiers, he had to temporarily restrict the freedom of these people.

After a busy night's work, Liao Fan specially entertained Niu Dan and them after returning to the camp.

"You have made great contributions tonight, I thank you on behalf of the soldiers, there are rules in the army that you can't drink, but today I specially found a jar for you, you drink!"

Liao Fan is sincerely grateful to Niu Dan and them, the passage they dug is not only the life passage for the internal personnel to retreat, but also the passage for their attack, as long as they are not discovered by the Japanese army, they can give the Japanese army a fatal blow.

After eating a full meal, Liao Fan fell asleep on the bed, and when he opened his eyes, it was already five o'clock in the afternoon, and he was too tired. Liao Fan, who woke up, hurriedly ran into Li Weimin's headquarters.

"How's the situation up there?" Liao Fan asked Li Weimin.

"The battle is over, the troops are on their way back, and I don't know what the outcome will be!" Li Weimin has already received the news that the troops are retreating. The 773rd Regiment did not suffer many casualties, and it was estimated that it would be night when they withdrew.

"How long will it be before they can withdraw?"

"Two hours at most! You can do it! ”

"Okay, when Changsheng comes back, let him come to see me!"

Liao Fan decided to postpone their operation a little later, he wanted to make sure that the soldiers they had arranged had successfully blended into the Japanese army, only then their next action would be meaningful, and if the operation failed, the Japanese army would probably be able to figure out their intentions.

Liao Fan waited very anxiously for these two hours, as if he was on the front line, surrounded by the Japanese army and had no countermeasures. Li Weimin saw all this in his eyes, obviously the affairs of the Suiyuan region are related to their future development, whether the Suiyuan region will be in the hands of the new 33rd Army or in the hands of Fu Yisheng, it is much better than in the hands of the Japanese army, and the little devil has begun to take root in the Suiyuan area, this is indeed a headache, if this nail is not pulled out as soon as possible, it will be a sharp knife inserted into the body of the new 33rd Army in the future.

With a commotion outside, the troops covering the soldiers who had infiltrated the Japanese finally returned.

"Changsheng, how's the situation? Brother Fan is waiting for you inside! Li Weimin hurried up.

"Let's go, let's go in!"

The operation was very successful, the Japanese army was attacked in their own defense area, and immediately fell into chaos, a hundred soldiers had already changed into the clothes of the Japanese army, and successfully infiltrated the Japanese army, and the Japanese army also because the sky began to darken, for the safety of the troops, they hurriedly retreated, and there was no time to re-check their troops.

"Did you receive the map I asked the communications man to send you?" This kind of map was related to their first set of plans, and he had to make sure that the map was delivered to Huang Changsheng.

"I have received it, and I also told the soldiers all the information on the map before the battle, so that the soldiers can remember it!" Huang Changsheng said.

"That's good, it seems that our actions have not been in vain, great!" Liao Fan said happily.

"Brother Fan, are you still acting tonight?"

"Of course we have to act, we have to make at least fifteen roads to the underground fortifications, so that we can send a large number of troops to quickly enter the underground fortifications and take the little devils by surprise!"

The Japanese army must have a lot of troops in the underground fortifications, and the troops of a regiment will definitely not be able to take the underground fortifications, so he must ensure that a large number of troops quickly enter the underground fortifications and deal a devastating blow to the Japanese army, so as to reduce the casualties on his own side.