Lieutenant General Lu Manlin did just as Qin Chuan said.

Renovation of the tunnel mouth, allocation of internal maintenance personnel...... The former is relatively easy, that is, the construction can be done according to the drawings, while the latter requires the training of professionals. For this reason, Lieutenant General Lu Manlin made a special trip to transfer a group of maintenance personnel from China to learn from those French, and after a period of familiarity with this batch of equipment, he replaced these French.

Then there was the construction of the anticline fortifications.

Qin Chuan never thought that a dead line of defense and then everyone staying in the line of defense could win the enemy, they had to bravely go out of the fortifications to fight the enemy, otherwise no matter how strong the fortifications were, it was just a haven to escape from reality.

After more than half a month, Qin Chuan can get up and move, but he has to hang his arms around his neck.

At this time, he went to the Maginot Line with Lieutenant General Lu Manlin, and was surprised to find that this place was completely different from the Maginot Line he had seen before...... On the French side, the shelter was overgrown with trees, houses, and even hills, but now it has been completely bulldozed and turned into an empty area, with barbed wire fences in between.

Lieutenant General Lu Manlin explained: "We think that those things will obstruct our view, so it will look much better, and in the future we will bury mines and build anti-tank trenches in this area!" ”

Qin Chuan nodded in agreement, which would expose the American, British, and French troops to the range of defensive artillery and machine guns...... There are some details that you need to really start arming, and this is one of them.

At the entrance of the defense line, cars lined up in a long line to enter and exit...... To be exact, there were two openings, one in and one out, and the openings were just high enough for a car full of supplies to enter.

"Those cars can be driven directly into the warehouse to collect goods!" Lieutenant General Lu Manlin said: "It can be seen that the French are very thoughtful, but these transport entrances will soon be blocked!" ”

Qin Chuan understood that these transport imports and exports were so large that they would become a key target for the enemy's attack...... It can even drive a tank into it.

So, they will be plugged up after they have been replenished with enough supplies.

"But we're going to dig a couple of similar transport entrances five kilometers later!" Lieutenant General Lu Manlin spread out the map, and after looking for a while, he pointed to a point and said: "Here, in the rear of the main defensive zone, only the enemy will basically break through our defense line will threaten there!" Once the war broke out...... We can get supplies from Germany, cars can be driven into warehouses to collect goods, and then these supplies can be transported in all directions by electric trains! ”

"Such a place should do a good job of preventing infiltration!" Qin Chuan said.

"You mean ......"

"The car goes straight into the warehouse!" Qin Chuan said: "What if the enemy's spy drove a car full of explosives into it? ”

Lieutenant General Lu Manlin's face couldn't help but change when he heard this.

"That's right!" He thought about it and said, "We need to strengthen the inventory work!" ”

"It won't work!" Qin Chuan said: "Enemy spies are everywhere, and they can even instigate against our people and bring bombs in!" ”

"So...... How do we do that? Lieutenant General Lu Manlin asked.

"Set up a transfer station!" Qin Chuan pointed to the map and said: "For example, if there are two transfer stations within six kilometers, external cars can only reach the transfer stations and then drive back empty...... Leave the rest to the trusted people who are fixed in-house! ”

"Good way!" Lieutenant General Lu Manlin nodded, and then asked Major Fein beside him, "Did you write it down?" ”

"Of course, General!" Finn replied, "Not a word!" ”

Walking into the underground fortifications of the defensive line, it is a different scene, the underground passage that was originally dark, damp and sultry, and requires a flashlight to walk in it, has been shiny all the way at this time, and the top row of electric lights stretches along the passage all the way to the front, and the air is very fresh.

Every hundred meters, there will be a small recessed outpost on either side of the passage...... This is for the sentinels, but also to avoid blockages in the passage, such as when two carts and stretchers meet in the passage, one of which can be temporarily avoided at the small outpost.

"This is the result of the restoration of the power supply!" Lieutenant General Lu Manlin smiled: "God, I never found out that this is still an underground city. Otherwise, I should have moved in a long time ago! ”

"General, I heard that you have set up a command post here!" Qin Chuan asked, "I still live in it for a few days!" ”

"That's right!" Lieutenant General Lu Manlin replied: "And it feels good, but after living in the villa for a few days, I am a little unaccustomed to it!" ”

"Yes!" Qin Chuan nodded: "It's like I'm used to targeting people instead of rabbits!" ”

Lieutenant General Lu Manlin couldn't help but laugh.

Qin Chuan didn't say anything, Lieutenant General Lu Manlin should have had a psychological shadow after the last battle in the hunting ground...... He feared that the guerrillas or some other organization would work against him, and that the underground fortifications were obviously much safer than the villas.

In other words, it's a place to find security.

It's a bit like Hitler...... Hitler could have lived in any upscale, luxurious villa, but he had to build himself bunker after bunker and endure mosquitoes, dampness, and oppression.

The reason for this is a lack of security.

This may not be a good thing for Lu Manlin, but it is obviously not a bad thing for Qin Chuan...... The more insecure Lieutenant General Lu Manlin is, the more he will devote his mind to the construction of underground fortifications, and even dream about how to build it better and safer.

"Look, Lieutenant Colonel!" Lieutenant General Lu Manlin took a few steps and introduced in front: "The French have even built an elevator here!" With it, we can easily reach each floor. Of course, there is a staircase next to it, just in case there is a problem with the power supply or the elevator is blown up! ”

Qin Chuan looked at the map...... There are seven floors in the entire underground fortification, the lowest level is used to store ammunition supplies, the upper level is the electric train, and then the upper level is the field hospital, military station, etc., and then the top layer is the echelon defense layer that communicates with the ground pillboxes and armored towers.

"We should establish a uniform standard for them!" Qin Chuan said: "For example, field hospitals, ammunition depots, etc., are fixed in a certain part!" I mean, all the underground fortifications are the same! ”

"Why?" Lieutenant General Lu Manlin couldn't help but ask suspiciously.

"Because ......," Qin Chuan replied, "In this way, even if our soldiers temporarily reinforce a certain area, they can easily find where they need to go!" ”