Sun Ji is a general, as a general who has been on the battlefield and is eager to go to the battlefield again, he just wants to be a general who is on the battlefield and charges into battle, not such a royal shift. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

The blood in his heart was not cold, and when Zhao Xin explained the drawings, it was natural that he substituted himself into the role of besieging the city. The more this is the case, the more terrible it feels, it is from the bottom of my heart, the heart is terrible, the 20-meter-high city wall, this is already an insurmountable difficulty, the average city has a city wall of seven or eight meters, it is already good.

The city wall is the first and most important level of the siege, and experienced generals tend to consume back and forth in the early stage of the siege.

Only a general with a brain in the water will attack in a big way at the beginning of the siege, because the enemy is holding the city, under the same hatred of the enemy, at this time, it is the most terrible place to attack, even if the whole army presses, it will only bring death.

Of course, it can't be generalized, for example, when morale is extremely low and almost collapsed, there are also cities that are attacked on a large scale and shaken the enemy with iron and blood, and most of them are attacked from the back, which seems to be a siege, but in fact, they stop at a shallow taste, lose a few people, and retreat to create pressure on the defenders.

It is precisely because of this understanding that Sun Ji feels terrible, the city wall will always be the biggest barrier to defend the city, and many changes in offensive and defensive battles are not in essence, they start from the gap in the city wall.

The 6-8 meter high city wall, because of the reciprocating struggle, is so patient, 20 meters, this alone, is a terrible defense.

In fact, Zhao Xin has not told Sun Ji that his city wall is not so simple, on the city wall, there are some unique designs, for example, those points on the city wall, that is a reserved means of attack, during the siege of the city, there will be people hiding inside the city wall, for the attack on the city wall ladder to attack.

Siege, if you want to climb the city wall, ladders are a necessary means, most of the ladders are only about eight meters, but in the future, if you want to attack the city, there will definitely be people who make more than 20 meters of ladders.

In the previous siege, they were all on the city wall, attacking the ladder, which was not a good effect, but Zhao Xin thought of it frantically, attacking in the middle, even if he couldn't push this heavy ladder down, but as long as he shot in the middle, stabbed with a gun, or even cut off the ladder, you must know that the ladder is made of wood, and it should be easy to use a knife to cut off the ladder.

If you change it to a height of five or six meters, you will fall if you fall, but at a height of about 20 meters, or even if it is 15 meters high, a fully armored soldier will be injured if he does not die, so the killing effect on morale is huge.

Height, at some point, is more important than others, and when Sun Ji saw the layout behind him, he really felt that the original 20-meter-high city wall was not the most frustrating. It is more difficult to attack after crossing the walls.

After occupying the initial city wall, it is still necessary to attack from the back, to a certain extent, it will retreat, and after that, it will do some unique designs.

For example, a long and narrow passage, all the other places are obstacles, this passage, will face the attack from above, and in front of it, without any cover, such a unique design, it seems to be just a passage, but in Zhao Xin's mouth, it is full of murderous opportunities.

Such a line of defense, placed on the ground, will certainly be easily destroyed, whether it is catapults, or other engineering equipment, it can easily have an effect on them, and they will be destroyed very quickly.

At a height of 20 meters, those who can climb this city wall must be lightly armed, after all, when attacking, a little speed will be the difference between life and death.

Even if they come up, these defense lines are only double-sided bricks, not as thick as the bottom wall, and no one has any way to do it, and they can only move in the area restricted by the other party.

These areas are specially used to kill people, not only to the extreme attack efficiency, but also to the extreme of personnel advantages, in addition to the inside of the channel, any node after that, will be killed several times, and even once things are not right, the defenders can use some methods, for example, fierce fire oil, or splashing thick acid, to isolate the attack, once retreating a few meters away, it is an absolute advantage.

This is not unique to the Bastion, in fact, although the Bastion has a similar setting, such as a triangle, or a means of flanking attack, it is not to the extent of madness.

This is unique in the First World War, the permanent line of defense, between a line of defense and a line of defense, there will be a long passage connected, when the first line of defense is not breached, the rear can be through this stable channel, a steady stream of support, once the line of defense is breached, then as long as someone buys a little time, you can retreat through this channel, and then to the second layer, or even the third layer of defense, continue to resist.

The gains and losses of each front are no longer very important, as long as it can cause huge damage, it can continue to retreat.

To put it bluntly, this passage is that I can use it, and it can be used very safely, before the battle line comes, it is safe here, after the battle line comes, it seems that the enemy can keep pursuing, but above, at the other end of the channel, there is a divergent open, and the defenders can put in much more troops than the enemy who is advancing side by side in the channel.

To put it bluntly, it is a question of whether to expand or not, in terms of human utilization, the later generations are more powerful than this era, I don't know how much stronger, and the application of manpower to the limit.

This point, in the First World War, in the midst of unlimited casualties, what was studied, in the era of thermal weapons, through the reduction of machine guns and a layer of battle lines, the enemy who passed through the defense line sporadically could be killed, and put on top of the fortress, which was even more perfect, the fortress did not have machine guns with thermal weapons, but the 20-meter-high city wall was a sieve, blocking most people under the city wall.

In Zhao Xin's explanation, Sun Ji and the others' faces began to turn white step by step, Zhao Xin just started, talking about thickening the courtyard wall, Sun Ji and others seemed to be a little unnecessary, such a thick courtyard wall, to resist the army, however, Zhao Xin had money, and took out this powder that he called cement.

Hearing the name of cement, Sun Ji and others all feel more appropriate, cement cement, add water into mud, mud into stone, it sounds good, anyway, there is money, but it can be made hard.

But the next unique arrangement made everyone shudder, a city wall, divided into three parts, the height difference between each part is not high, that is, five or six meters, it doesn't look much, but in fact, after climbing 20 meters, it is already three times the height of the original ordinary city wall, there are three peaks.

This is not an ordinary heroic city built against the mountains, but a real fortress armed to the teeth, to cross these deliberately set obstacles, under the rain of arrows and defenses, you can imagine what a price to pay.

But the most terrible thing is that the strange-looking passage, one is 12 meters long, but it is divided into three sections, each section, there are certain nodes, and extend backwards, some like an inverted triangle arrangement, it seems to be very troublesome, so maybe, it will be divided into several ways to advance, the passage can also give them protection, so that it is difficult for the archers to play a role.

But in fact, after sparing a circle, they will still return to the original point, in which, they will be attacked in turn, or in the case of a much higher number than them, they can only walk 3 people side by side, if it is fully armed, this personnel will be reduced, and the opponent, 10 people at least, and even archers in the back row, and even grenades, in the era when there is no gunpowder, concentrated acid and strong alkali, is still a terrible attack weapon.

Sun Ji and Xue Yu looked at Zhao Xin's introduction dumbfounded, they no longer knew how many people were needed to conquer this fortress, because of the unique space design, there would be many places to block bows and arrows and stones, and there were very few bows and stones that could cross many defenses and fall on their heads, but the soldiers in charge of the back attack were going to be hit by waves, and if they were a little weaker, they might collapse.

But it was easy to climb the city wall, I thought I had opened the key point, but I encountered layers of vicious organs, what was in Zhao Xin's mind, why did he think of such a terrible defense, is this also immortal grant, is it possible that in the world of immortals, there are also wars and battles.

Zhao Xin's next focus was not on the fortress itself, and the words he blurted out shocked everyone again, it turned out that this was just the main house, just a core of the defense system, not all, the most critical, and the most powerful defense, in fact, was on the outside.

In this renovated Miao family's main house, it is already a frenzy of defense, but in Zhao Xin's plan, the main defense system is not the main house, it is just a base point of defense, and the most lethal is still centered on the mansion, and 12 arrow towers will be built.

This is the real arrow tower, but not the previous mansion, made of wood The proposed arrow tower, all made of reinforced concrete and green bricks, is basically the blockhouse of later generations, each of which is about 40 meters high, because of the seal, he is on the ground, there is no entrance, the entrance is open underground, with 3 meters thick reinforced concrete cement, and then build an upward passage, using the tunnel from the main house, a completely closed floor, above, is full of perforations.

Similar to the pillboxes of later generations, in this era when there were no thermal weapons and no machine guns, what Zhao Xin prepared for them was a repeating crossbow, which was the most suitable weapon for shooting holes, which could maintain lethality and persistence.