The Germans launched two more attacks that day, but they were eventually repulsed by the Soviets.

The torrential rain caused great distress to the German troops, making it impossible for their combat effectiveness to play normally, while the Soviet troops relied on field fortifications to stabilize their positions.

Otherwise, if the weather is clear and the line of sight is good, it will indeed be difficult for such field fortifications to hold back the German attack.

Because first of all, the artillery fire, fighters and bombers bombarded indiscriminately, so after a few rounds of bombing, the trenches will not become trenches, and the anti-tank trenches will basically be blown up, and then the German army will send tanks and assault guns to cover the infantry advance...... the "Stalin Line" will not be able to successfully block it, and how can the field fortifications be possible.

This is not to say that there is a problem with the "drum" defense that Shulka is talking about, because it is not just a matter of one defense, the Soviets have built three lines of defense behind it in a row, one cannot hold and another one, and then another, and when the Germans think they have broken through the last one, but the Soviets who have fled to the rear have built another ...... There is no end to this repetition.

Therefore, unless the German army can break through several lines of defense at the same time in a short period of time and then drive straight in, it is destined to fall into the trap of this "drum" defense and struggle.

The problem was that Shulka, or the 333rd Regiment, did have some luck, otherwise they might not have been able to hold off the Germans for a day in that fortified line, which often meant death.

Fortunately, none of this happened, so Shulka and the others entered the retreat procedure smoothly at one o'clock in the morning.

Because of the experience of the last time...... To be exact, it was not his own experience, but the experience of the friendly retreat being discovered by the Germans and chasing after them, this time the Soviets did not dare to be sloppy before retreating.

First, they had to dig two more fortifications behind the defensive line.

This is intended for covering troops.

There is never too much fortification in a war, especially if the enemy has tanks and the Soviets don't...... The Soviet tanks suffered heavy losses after the battle, some of which were destroyed by the Germans in the battle, and more because the Soviet tanks were not mobile, and they broke down while retreating, and the enemy was chasing behind the butt and had no time to repair, so they could only blow it up.

This is what puzzled many fighters: before the war, the Soviet army had many planes and tanks, but after the war they were barely visible.

After the defensive line was arranged in the rear, a large number of mines were laid on the original positions.

The mine is a PMD mine, that is, a "wooden shell mine" often mentioned by modern military fans...... Soviet equipment is often crude, simple, low-cost, but very practical, and the "Wooden Shell Mine" is one of them.

It is actually two wooden boxes that are upside down like lunch boxes, with a fuse and explosives in the middle that pull or press the fuse and detonate the mine as soon as you step on the upper lid.

Since it was a wooden mine, the German mine detector was completely ineffective, and the disadvantage was that it was not powerful enough and did not have an iron shell as a shrapnel to kill nearby targets.

However, this does not affect its deterrent power as a landmine.

It was only then that Shulka learned about the laying of such mines...... The mines were delivered to the fighters in large quantities by the rear sappers, and then the sappers also needed to teach the soldiers on the spot to lay mines and precautions.

This was due to the fact that the entire defensive line was more than 100 kilometers long from south to north, and if it were all mined by engineers, there would be insufficient manpower.

But at the same time, it also exposed the laxity of the Soviet army...... Combat units are heavily mined on the battlefield, and many of them are recruits who have only been in the army for a few days.

Shulka shulka shulded a little at the thought of this.

"First of all, we have to make sure that there are no allies ahead of us!" A sapper explained to Shulka and the others: "If you don't pay attention to this, you will soon find that the friendly troops are trapped in a minefield and cannot get out!" ”

The fighters burst into laughter.

The engineer sergeant said very seriously: "This is not a joke, comrades, because it is quite possible that this 'friendly army' is you!" ”

It is true that this is the way things happen on the battlefield, and your own negligence can cause the death of your allies, and in turn, the negligence of your allies can also cause your death.

Therefore, only by cooperating with each other and carefully restraining themselves can we ensure that each other will not become "friendly forces" trapped in a minefield.

"And then, you have to do it!" As he spoke, the engineer sergeant demonstrated the mine-laying process to Shulka and the others.

The process is very simple, after the thunder is laid out, remove the safety pin, and then gently close the upper cover...... You don't even have to do a disguise.

Of course, this is a lowering of the requirements of the sappers on the combat troops: the sappers are worried that the mines will be detonated when the combat troops lay camouflage, that is, cover a little something, and on the other hand, the wooden shell mines are susceptible to moisture and fail, although their explosives have been waterproofed.

Then, almost in a row, the fighters laid the mines in front of them, took a few steps back and repeated the same maneuver.

While this makes the mines regular, it is important to minimize accidents during mine-laying by keeping your team out of order.

Inevitably, however, there were several accidents.

At first, everyone was very careful, even with awe, because just such a small mine could take a person's life.

But after a long time, the soldiers became a little unruly...... While Shulka and the others were still laying mines, they only heard a "boom", followed by a wail, and a soldier's calf was blown off, and wood chips were stuck all over his body.

"What's going on?" The engineer sergeant asked the medic to go up and asked a few people next to him, "Who did the good thing?" ”

"I don't know, sir!"

"I don't know!"

……

Of course, no one admitted it, but the engineer sergeant quickly found the problem, grabbed one of the soldiers on the right and pushed him to the ground, scolding: "You bastard, you are one step faster than the others!" ”

So, sometimes it's not a good thing to move fast.

It was only after the original positions were covered with mines that the troops retreated under the cover of the rear troops.

On the way, Shulka thought:

There are 165 kilometers from the "Stalin Line" to Kiev, and there are 16 lines of defense for every ten kilometers, and the Germans have to rush to Kyiv in almost ten days to capture one or two lines of defense every day, which means that Kiev still has ten days to prepare.

This is enough time for Kyiv, after all, they just need to set up camouflage and put the cellar and other basements to use.

Well, it is not a big problem to block the German Army Group South on the Kyiv line, the focus is still on the rear.