In the eyes of these regimental trainers, the fortress is just a defensive weapon, which is to be sentry every day, and to conduct offensive and defensive drills once a month, which, in their opinion, is not much strange.

At best, they may be more suitable for defense, and when war comes, they can defend more freely, giving them a greater sense of security.

The idea of the group training is actually similar to the idea of Baozhou, the group training is more or less, and they are also familiar with the real combat effectiveness of this fortress, and these Baozhou officials only knew that there was such a thing after they arrived in Baozhou.

Although it is very strange why this fortress can play such an important role in the Baozhou Mutiny, it is really embarrassing to have such a fortress so far away from Baozhou and not in the main traffic route.

This is also the reason why Baozhou did not hold it in his hands after knowing the location of the fortress, after they saw it, they did not pay much attention to such a fortress, and put him in a relatively secondary position, as long as he would not be occupied by bandits or anyone else, it would be fine.

In the eyes of generals like Di Qing, who have been in a hundred battles, the fortress has become a national weapon, and even Di Qing is still wondering whether to seal the fortress to prevent it from being detected by the Liao people.

But soon, Di Qing dispelled this idea, in the future, once the fortress is applied to the defense of the Northern Song Dynasty border, the frontier will be very stable, the original Baozhou, at best, is also a border military state, but it is still hundreds of miles away from the real border.

Before, once the important fulcrum of the border was broken through, the cavalry could reach Baozhou in one day under the fast horse, but now, as long as the fortress system is completed, even if it is empty, let the other party's cavalry pass, the other party will not dare to pass, once the back road is blocked, then what awaits him will be a catastrophe.

In the future, as long as the fortress system is arranged, within the range of 50-80 miles, if the three to four layers of forts are arranged, it is almost impossible for people to break through, unless six to eight forts are broken in a row.

That's almost impossible, a fortress conservatively estimates the loss of 25,000, the nomads, where there is such a huge army, can be consumed, and even for the Liao State, as long as the loss exceeds 20,000, they will have to spend more time to recover.

For the war, if you don't have a deep understanding of it, you won't know how terrible this fortress is, even if Han Qi, who was the first to apply the fortress to the northwest front, only saw this fortress, for the development of his northwest situation, instead of clearly seeing the role of the fortress.

In Di Qing's eyes, this is completely to play defense to the extreme, the extent of this play is simply terrifying, from every detail, the defense is taken into account, and the proportion of people is almost witty.

This defense, not in the traditional sense, is a defense that transcends this era, taking space, manpower, and even time into account.

For example, when the battlefield is scorched, or take the initiative to retreat, let these people climb the fortress, and then, use the people below to block the way to climb.

In the process of climbing with the help of the ladder, up and down do not touch the ground, it is not easy to control, as long as a slight attack, cut, or retreat, it is enough to block the pace of the underground attack, more than 30 meters high, for the ladder like this, with higher requirements, once destroyed or pushed, it is not so easy to recover.

This is a time difference, the siege outside is not right, above them, under the premise of taking the initiative to retreat, they will definitely rush up in a steady stream, under such a premise, with a short time, maybe a quarter of an hour, cut off the attack below, and then carry out a wave of attacks, in this way, the advantage of personnel will be placed on the side of the fortress.

With the help of the fortress defense system, it can flexibly come out from any position in the fortress and attack the enemy in any position.

In fact, this is also a comparison of manpower, war to put it bluntly, is a game that is a bit like data, one person to one person, should be evenly matched, even if it is a victory, it is limited in strength, two people, should be stronger than one person, three people are even more so.

In those battles in which the weak defeated the strong, it seems, is that 50,000 against 300,000 won, in addition to training, not to mention the regular army against the defenseless militia, the real regular army against the regular army, the side with fewer people, will use all kinds of advantages to help themselves, in most of the battles, it is also to achieve regional personnel advantage.

This point, in the book of war, has been explained very systematically, and the book of war, all of which are said, use all kinds of conditions to create a situation of being outnumbered by the crowd, even if it is for a short time.

In defense, perhaps, some defense facilities are reflected, but more often it is to take advantage of the geographical advantage and set up some defensive weapons.

Similar to the fortress, it is really unheard of to really carve this point into the bones.

With the help of wide and narrow staggering, the attacker will face one unbalanced node after another, almost breaking through this node, and there is another node every ten meters, so that almost no step is taken, and you need to pay the price of blood.

On such a high fortress, after paying a huge sacrifice, it is a small number of ordinary sieges, as long as a breakthrough is found, a few can come up, and then, you can come up in a steady stream.

The fortress is more three-dimensional, the support below is likely to be cut off, up, only one to one, or one to two people, in the face of the unique design of the fortress, step by step, to the end, it is easy to break through, the support behind is gone, but encountered a more tenacious defense, these are not easy, after a lot of hardships, capture the soldiers above the city, what kind of treatment will they encounter.

Constant victories will give the defenders a huge bonus above them, and it will also put a heavy pressure on the attacking side, and once this fact is formed, it will be an impregnable line of defense for them.

At least, Di Qing didn't think that there was any way to take the fortress at a cost, they were all soldiers, and the loyalty of soldiers was much higher than that of ordinary people, and it was not easy to buy, and the possibility of thieves was small.

Not to mention taking 10,000 steps back, it's perfectly okay to treat this as a consumable.

There is no defense line that can never be broken, but what will the fortress pay, the cost of 2000, 500 soldiers, and even the need to be well-trained, the general longbowmen and auxiliaries can be, the advantage of city defense is that it can maximize the huge advantages of the city wall, and pull the difference in training down the same horizontal line, as long as you are familiar with it, you can kill people here, once you kill more people, you have more battlefield experience, and you will naturally become a fierce general.

It is conservatively estimated that to break through such a fortress with only 500 people, it will cost at least 30,000 losses.

This is almost impossible for the era of cold weapons, a small land, a fortress that can be taken down at a glance, to pay more than 60 times the price, which is impossible for any commander to hold on.

If it is a big city, or a capital, the generals will still be motivated, what to say, after the capture, after the casual robbery for three days and the capture, the casual u carnival, and there are rewards, but what is the fortress, on the surface, it is just a stockade on the border, and it may attack at first, once the loss exceeds 3,000 people, no one will continue to attack.

Perhaps, they will consider bypassing, or maybe they will consider surrounding, no matter which option is chosen, it is a huge advantage for the defenders.

If you choose to go around, as long as the fort maintains a certain density, then you can hide some mobile troops in some of the back forts.

The Northern Song Dynasty lacked horses, but it was not without cavalry, but it was not used as the main force on the battlefield, and now, a large number of war horses have been obtained on the zero axis, and it is more likely to establish a mobile force

The fortress can hide soldiers, and as long as it doesn't come out, who knows, how many are hidden, even if one hides 1,000 cavalry and 10 fortresses, it is a troop of 10,000 cavalry, and this unit is divided or combined, as long as the other party is not every fortress, it is outside, establish a series of huge defense lines, and carry out the overall encirclement, it is difficult to prevent this

Strictly guarded, that is even more unreliable, the bastion, itself is in the periphery of the entire border, what are you doing around it.

In fact, except for storming and pulling out the nails one by one, there is really no other way for the fortress, this is actually this fortress, the most terrifying place.

Consumption, can be stable, long-term consumption, especially in these places, can also be easily abandoned, this will become the agricultural civilization to the nomadic turning point, in the usual one-to-one is difficult to do, here there will be one to more, as long as this defensive weapon, do not leak to the enemy country, the Northern Song Dynasty will be the first invincible.

Di Qing felt that he had really come to the right place in Baozhou, if he didn't come to Baozhou, he wouldn't have come into contact with the fortress, especially the unique tactics of the fortress.

In fact, it is really like this, in times of crisis, they were taught by hand, and even a series of routines were rehearsed, and these militia groups have reached a very deep level of mastery of the bastion.

What Han Qi got was, because of the relationship between transmission, there was a certain deviation, and Zhao Xin, who had already put his heart on making money elsewhere, did not have the time to teach him by hand, at most, he paid attention to the design drawings of the fortress and the construction aspects and taught it.

When he came to Han Qi, Han Qi once again took out the important things he understood, which would be a big gap.

Di Qing really sighed with emotion, that Dinghaihou is really mysterious, such a one, the key points of attack and defense are taken into account in the fortress in his bones, which was born in the hands of a child who is less than 10 years old, or even five or six years old, which is also terrible, compared to him, these adults are all eaten by dogs.

A commander like Di Qing was shocked to death, and the other generals were not much better, some subtleties, you have to experience them well, so that you can feel that it looks very simple, but it is so powerful, what is going on.

Is it because no one has considered a higher city defense before? Wrong, of course some people have thought about it, but they haven't thought about making it so high, like this, it is really difficult to raise more than ten layers on the flat ground at once.

In ancient times, it was not that there were no buildings with high standards, some towers were like this, the tallest tower, even 100 meters high, such a tower, not suitable as a defensive weapon, too small, easy to target, but like a fortress, there is no way to build.

The height was once applied by the ancients, and it was also applied to the construction of city defense, which is the source of the famous Xiongguan in ancient times.

Luoyang, why has it been the political core for thousands of years, and the same is true for Chang'an, they all have portals, Luoyang's Tiger Prison, Chang'an's Tongguan, are all dangerous checkpoints that can be called Xiongguan.

In the art of war, Xiongguan generally refers to the back of the mountain, the terrain is higher, and steep, with the advantage of the mountain peak and terrain, the attacker faces a higher mountain, a more majestic level, often has to pay more than other city defenses.

There is its own independent water source, not even close to the side of the big river, to prevent it from being diverted for irrigation, some difficult to break the level, all of which are the steep parts between the two mountains, and those places where the general attackers must attack on their backs, which has caused them trouble, and in hundreds of thousands of years of history, such a majestic pass is famous.

However, no matter how much construction is carried out, it must rely on geographical advantages, which are unattainable.

Almost for the entire history of history, it has had such a geographical advantage, that is, those places where the capital was built.

Kaifeng of the Northern Song Dynasty is an exception, it can be said that there is no danger to defend, once the Hebei defense line is broken, you can go to Henan, the historical alliance of the Yuanyuan, this is the case, at that time the Northern Song Dynasty has reached a critical juncture, if it is not resisted, maybe, it will be the kingdom.

The alliance of the Yuanyuan was successfully passed, but more than a hundred years later, when the Jin Kingdom broke through again, it was not so lucky.

Since the founding of the Northern Song Dynasty, the relocation of the capital has been mentioned countless times, but Luoyang Chang'an has been dilapidated, and with the pressure of food, it has never been done.

But now, this fortress can not consider the location, do not rely on the geographical advantage, as long as it is in some suitable places, as long as it is covered with more than 30 meters, it will become a male pass, or the murderous and unreasonable kind, which means that at any point, you can build a defense line by yourself, which is too critical for the Northern Song Dynasty.