At the time of the birth of the warship, for traditional thinking, the power of the gun is far above the power of the land gun, the scientific and technological indicators, and even the industrial and design are the same, why there is such a difference, the reason is very simple, the movement is difficult.

The gun can't be fixed there, fixed there, can affect, just the area covered by the fort, this area, even if the range of the gun is 20 kilometers, that is, a circle of 20 kilometers, this total area is not small, but relative to the huge national territory, as long as avoid this fortress, other places to fight casually.

Only by constantly moving up, the artillery has great power, as well as a strong deterrent, which is the root cause of the truth under the range of the cannon, the moving cannon, brought strong attack and deterrence, even if it is a plain, others do not dare to enter.

Early cannon, the total weight is lighter, the power is not large enough, at that time, the rise of power, can not catch up with the rise in weight, so the cannon is the bigger the better, but with the development of technology, the weight of the cannon, under the premise of rising, the logistics has produced great pressure.

About 1 ton of artillery, for no mobile power, relying solely on manpower and Mara, has been very difficult, equipped with a large number of heavy artillery troops, is easily affected by the weather, once it is a continuous rainy season, it is easy because of logistical problems, slow movement results.

In the armor and other forces did not appear, the movement of the artillery on the land is a big problem, in view of the mobility and power of the problem, sometimes, the more powerful must be abandoned, really get a 200 mm, or even more big guy, the whole force does not revolve around it.

Guns above 200 mm are really useless for land, and on land, those huge, incomparably strong fortresses, almost all of them have the existence of such artillery, these fortresses, in the First World War, it is absolutely the existence of nightmares for the attackers.

The most obvious is that the fortress of Liég, even if it is a sudden attack by Germany, whether it is the combat effectiveness of the army or the degree of various weapons, is higher than that of Belgium, but in front of the fortress of the hot sun, it is still hidden, the reason is very simple, so equipped with a large number of large-calibre heavy artillery fortress, in order to conquer, in the absence of a sufficient number, or even in front of his heavy artillery, there is no way.

In fact, historically, it was relying on 900 mm guns, which conquered the fortress of the sun, of course, such artillery, the deterrent is mostly, but pulled down the Lizi Fortress, symbolically came a few waves of attack, in the face of the unrivalled artillery, finally chose to surrender.

In order to overwhelm the fortress, the caliber is much larger than the fortress, at the same time, the range needs to be longer, so as to be able to suppress, this is also the sadness of the fortress artillery, to deal with the distance than him, or no heavy guns, that is absolutely overwhelming advantage, but once the range is longer than him, the power is greater than him, that is a nightmare, only to be beaten passively.

Before there were not a large number of motor vehicles, or even armored forces, on land, the advance of the artillery was either manpower push or Mara, so although Napoleon called the gun king of the army, most of the artillery of that era was three-pounder, six-pound run, even a stronger 12-pounder gun, that was already the limit.

These guns, their weight is relatively light, even if the age of 12 pounds of guns, his weight, that is, hundreds of kilograms, even if it is added to the truss, it does not exceed 1 ton.

A ton of something, for a single person, is a huge, difficult pull of the weight, but for the army, not very heavy, specially made in the carriage, can pull up 2 tons of things, a ton is only half of this heavy carriage.

Historically, heavy artillery from the emergence to large-scale development, and then to the Napoleonic period, after hundreds of years of development, to the era of Napoleon, there are the logistics problems of heavy artillery troops, but in the set of the navy, the development is too fast.

In the beginning, whether it was a copper gun or an iron gun, a few hundred kilograms, they were fine, whether it was a horse-drawn carriage in the Navy or a ship, it could be easily pulled up.

However, the background of the Navy is too deep, the material on the excellent, the excellent on the artillery system, so that the power of the gun is getting bigger and bigger, the old 105 mm, and the new 105 mm, the power above, is a world apart, the weight above, is constantly increasing.

Just like the Navy's new 105 mm heavy gun, plus the gun rack, the total weight reached 2200 kg, that is, 2.2 tons, this weight, has exceeded the capacity of ordinary road, must use a large number of horses, plus tires, in order to pull up.

105 guns are still so, to 155 guns, is several times higher than the weight, up to five or six tons, with the rapid improvement of the caliber, the overall weight will also be significantly increased, for example, the most advanced 400 mm gun, the weight of the simple gun itself is as high as 140 tons, which is almost on land, can not be moved.

The lifting of the caliber has brought a substantial increase in the weight of artillery shells, for example, the ordinary shell weight of 105 artillery pieces is about 20 kilograms, that is, equivalent to 40 pounds, but to 155, it has reached more than 50 kilograms, and as for the 400 mm artillery, the general weight is more than one ton and a half.

The simple shell is a ton and a half, you can imagine the power, especially the use of new propellers, so that 150, or even 200 mm artillery shells, to tens of kilometers away, this weight has been too large to add.

According to the weight of the current 152 mm heavy gun, plus the gun rack and tire, the overall weight of 7.5 tons, this weight is lighter than the weight of the mainstream of the 152 mm gun, which also shows that the Navy, in the weight control and gun design on the strength, but such a gun, for the current terrestrial environment, is still a nightmare.

The carriage, even from Europe, the strongest heavy-lifted horse, they are difficult to pull close to 10 tons of things, not to mention the war horses of this era, such as the Mongolian horse, in front of the heavy artillery, is the dwarf.

After the caliber, every increase in the caliber, the overall weight, the overall weight, it is much higher, for example, 152 mm artillery, the whole is only 7.5 tons, but when this caliber, from 152 mm, to 400 mm, do not look at only one and a half times, but the weight is turned around and rose.

In this case, most of the guns were loaded on ships and became guns.

For example, the double-loaded 400 mm gun, plus turrets, auxiliary devices, and ammunition, the overall weight of about 1100 tons to 1200 tons, this weight, on land, there is no way to solve, but placed at sea, in the early 20th century the displacement of the dreadnought ship, 16,000 tons, according to the backpack, the first three and two, 10 guns 5 turrets equipped with methods, a total of 5,500 tons, this occupies one-third of the overall ship weight, which is more than the specifications.

However, now, there is no way to make a large-scale breakthrough in the ship, from 50 tons, 100 tons, rapid expansion to the level of tens of thousands of tons, then the battleship, at least, in a short period of time, the possibility of emergence is low, then only choose the solution on land.

400 mm gun, has been made, can not be sealed down, must let it produce military use, in the land war, do not have to consider the protection, if you exceed the range of this gun, you use armor can not stop, did not exceed this range, is passively beaten, do not have to consider the problem of protection.

In other words, to transport this gun, at least, requires a vehicle capable of carrying 14 tons.

On land, without a large-scale armored department or a large-scale heavy-duty vehicle, the means of transportation that can support about 140 tons of items can only be based on railways.

Railway armor, which is second only to the navy's land combat weapons, those large-calibre artillery during the First World War, except for the Navy, most of them were transported by rail, even the largest caliber, more than 900 mm.

140 tons of 400 mm guns, after removing some of the armor, on land, what can threaten the armored gun, 400 mm gun, up to a range of up to 38 kilometers, under such a range, nothing can threaten it.

After some weight loss, the weight of the entire gun was reduced to 120 tons.

Although it is still very large, but the weight and length, equivalent to the size of two cars, can be loaded on the train.

Just a loading, strong back seat and power, so that it is impossible to fire on the railway, direct firing, the railway is only responsible for the transport of the work, after reaching the place, is the power of the gun itself, in the railway on the rapid maneuver, to reach the battlefield under the premise, can be extended, with a series of objects fixed, increase the intensity, this can be fired.

The Navy, in the railway construction, has been very mature, you know, in just a few years, the construction of the railway mileage of more than 200,000 kilometers, almost covering the current fixed navy, for the Northern Song Dynasty coverage, also reached more than 50%.

A lot of railways have been built, and in the same way, railway trains have been built a lot, and this task is not difficult to modify on the basis of the original train.

The first armored train, has been produced, a total of 12, two heads, can be forward and backward movement, they occupy 3 cars, the remaining 9 cars, itself, should be able to accommodate two guns, but in the position, there are recoil, by the way, under the premise of continuity, finally, the choice of two.

The two cores are artillery, both of which are 400 mm caliber, which can be launched at a position of 270 degrees, not full coverage, but they are also quite terrible, with a maximum range of 38 kilometers, and the threat and precision range are about 18 kilometers, which is already a very long distance, which almost represents the extreme of optical targeting.

On the cannon above, one step, step by step, if there is a advantage of about 3 kilometers in the range of the gun, if there is an advantage of about 3 kilometers, for naval warfare, it is simply possible to crush the opponent, unless the opponent's boat speed is faster, otherwise, control the distance, one side can easily hit the other, the other side, can only be passively beaten.

The project of the armored train, which Zhao Xin took over directly, after the completion of the investment because of the huge relationship, no one knows what kind of power it is, the army is estimated, is based on the caliber of the artillery, may be 100 mm, 200 mm, higher than 100 mm, 200 mm,

But when the real test, it was startled, you know, the original gun, the original gun, is also more than 150 mm, but the use is only nitro cotton, he is smokeless gunpowder, can ensure smokeless laugh, power, there are some unsatisfactory,

However, this 400 mm gun, using self-tightening technology, using metal coating, in the gunpowder power, there are also great advances, all of which are increased in power.

Other than that, the total kinetic energy of the export has increased by 30 times, while the weight of the artillery shell has only increased by 4 times, which means that the overall power has increased by about 7 times.

This is the second, the key is artillery, artillery shells and a series of things in the rise, the overall power is also greatly increased, and now get to the train, because of the larger weight, the average car, the gravity, are about 70 tons, is considered to be the limit of the railway.

12 cars, the total weight of more than 840 tons, at sea, can only be regarded as a very small ship, but on land, it is really a big Mac.

Because the gun is too heavy, in terms of considering the power, this power not only supports the armored train, but also the rapid travel under the impetus of the steam engine, but also supports the expansion after reaching the position.

The Navy has adopted a unique design, mainly the automation of the expansion, and the transmission device, replacing the manpower with steam power, will make the speed of the gun expansion, from the original 8-10 hours to less than 2 hours, which will also occupy a considerable momentum.

However, the final completion of the production of armored trains, but the most primitive form, the attack combination formed by two artillery pieces, can be on the railway, at a speed of not more than 100 kilometers per hour, basically in the place where there is a railway, can be arranged, at the same time, when unfolding, there are certain restrictions, can not be a bridge, or uphill downhill such a place, of course, in the fixed navy line operation, and even in the future, into the Northern Song, there are huge benefits.

The construction of the armored train, announced the 400 mm gun project, really from the experimental development, forward, the real into the battle sequence, and before this, there is a problem to be solved, that is, to experiment with the power of this armored train, there are some matters when the operation, such a powerful weapon, of course, to thoroughly study clearly, before you can enter the battlefield.