Population is always the basis of various industries, whether it is the number of workers or the number of troops, there is not enough population as the base, let alone taking care of both aspects, even if it is difficult to do a good job in one aspect.

Few countries have been able to take care of this in the wars of the post-industrial age, and unless it is a war of small scale and overwhelming superiority, the war between two evenly matched countries must coordinate these two aspects.

If, the Dinghai Navy has been developing slowly, a small island of 300 square kilometers, 5-200,000 people, maybe with Zhao Xin's ability, can still build a rich city, but that's all.

The population of 200,000, if all of them are workers, then the army is insufficient, the army is guaranteed, and there are not enough workers, and even in a sense, even if 200,000 people, all of them are troops, so what, if you find a new target for the huge empire of the Northern Song Dynasty, 200,000 people, even if all of them are armies, and even thermal weapons will not work, unless you can make machine guns and modern armies.

Having enjoyed the demographic dividend of the 21st century, he knows very well how important it is for the Dinghai Navy to have enough population, so from the beginning, Zhao Xin spared no effort to immigrate, but also vigorously developed various buildings.

Traditional, feudal mud houses, although the cost of building is very small, it is a pity that these houses simply cannot accommodate so many people, and the population volume ratio is also low.

Under the multi-pronged approach, in the seventh year of Qingli, the population of the Dinghai Navy grew to 25 million, a huge population, not only gave birth to a large number of workers, but also produced a large number of products in the face of the terrible labor efficiency of the Dinghai Navy, which not only satisfied the Dinghai Navy itself, but also sold to the Northern Song Dynasty and other places throughout Asia.

In the same way, the huge population also brought the military personnel to choose from, and in the sixth year of Keiri, the population grew to a certain extent, and the army was reorganized under the premise that there were two large islands of Dinghai and Ryukyus.

The two military regions of Dinghai and Ryukyu were the mainstays, and each military region would have a division under its jurisdiction, and the one located in Dinghai was an integrated division, which completely changed the military system of the Northern Song Dynasty and chose the military system of later generations.

After thinking about it, I finally chose a mixed state, with the establishment of three brigades and one regiment, the three main infantry brigades, each brigade has an average of about 5,000 people, a regiment is about 1,800 people, and the entire division plus the division headquarters and two sets of officer systems, a division is about 20,000 people.

Among them, the Ryukyu division is a standard division, while the navy is a reinforced division, with a reinforced regiment and a supply regiment, and a logistics brigade, with a total number of more than 30,000 people.

After all, the two regular infantry units have about 50,000 people, which is a lot, but compared with the population of the entire Dinghai Navy, it is really not much.

And, on the Ryukyu side, that is hidden, so far, no one knows that Ryukyu fell into the hands of the Ding Navy, a Ding Navy with huge wealth, equipped with a 20,000 troops, it is really not much, after all, the logistics brigade supply battalion of the two, almost added up to more than 10,000 people, this is in the original sequence of the Northern Song Dynasty, that is to the people.

In fact, the Dinghai Navy does not only do this, the Dinghai Navy adopts a recruitment system, but according to Zhao Xin, these soldiers will serve for a maximum of one year, to put it bluntly, a year's time is the training of recruits, so that they are familiar with various combat methods.

After that, some outstanding ones who stood out from the crowd would become officers and stay in the army, and they were enriched in the more bloated officer system, you know, in the regular Dinghai, in the seventh year of Qingli, a company had at least 18 to 20 officers, which far exceeded the ordinary officer establishment.

The rest of the soldiers, after a year of training, will be transferred to the reserve, which will become the second line, or the militia unit, they will choose to train three times a week, one afternoon at a time, and the rest of the time to work in the factory.

In fact, since the beginning of the Dinghai Navy, such measures have been carried out, and it seems that there are only 20,000 regular Dinghai forces, but there are at least 100,000 people who have received strict military training, and if you add militia training, it will be even more.

After the Dinghai Navy became regular, almost every male worker in the factory would undergo military training once or twice a week, which seemed to be very rare, but in four or five years, an average of about 35 days a year, it has been almost half a year.

These are the basis of the naval military system, with these, it is enough to ensure security, in the same way, if you choose to expand in the future, as long as you add a group of reserves and militia combinations, and then carry out a short period of training, you can quickly become an army.

This is also a reference to the practice of the Soviet Union in the past, during the Great Patriotic War, the large-scale losses of the regular army of the Soviet Union, and the rapid formation of the army later, have something to do with such two or even three sets of teams.

In this era, the requirements for professional soldiers are not high, even if thermal weapons are popular, under the premise of no machine guns and a large number of artillery, the tactical literacy is really not high, let alone two sets of teams, three sets of teams, and even four sets of teams.

This also means that the fixed navy can be expanded by 4 times in a short period of time, and the combat effectiveness will not decline too much, and if it is not as particular as the Soviet Union, it can be expanded by 10 times.

Compared with the peasants, after training, especially the workers under modern management, they are natural soldiers, especially for longbows and thermal weapons, discipline is their greatest advantage, it does not take too much time, let them train discipline, can directly enter the study of tactical skills.

In the era of the longbow, personal bravery is no longer the key, the key is to listen to the command, as well as the proficiency of the attack, these two can be done, you are a qualified soldier, even if you can't beat others at all, it doesn't matter.

This is even more true when it comes to hot weapons, individual fighting, it is already very unimportant, after all, even if you are strong in martial arts and shoot indiscriminately, you can dodge, maybe a super master like Sun Ji can, but in this era, Sun Ji has the same grade, and there are a few.

Calculated in this way, let the skilled soldiers, after a year of high-intensity training, retire, this is a bit of a waste, this is equal to the previous money, wasted, need to be retrained, this is very incomprehensible for many people, but Zhao Xin's status in the Ding Navy is very high, a word, plus the Ding Navy is not short of money, just let him, no one knows, Zhao Xin's mind will be so deep.

The 20,000 troops on the surface, even if they are known by the officials of the Northern Song Dynasty, will not have much impact, at most they think that Zhao Xin lacks a sense of security, and 20,000 people do not pose much threat at all.

In addition to developing the army, the navy is more in the navy, and the navy is the island, and the key to the island's defense is to defend against the enemy, and the navy must be developed.

Under the unremitting impetus of the Dinghai Navy, the number of the navy was very large, with more than 100 ships of various sizes, including 24 first-class battleships.

Of course, the first class battleship that was first made has basically been modified after 2 years, and the weapons and the hull itself have undergone great changes, so that they can be worthy of the name of first class.

The development speed of the navy is very fast, from the launch of the first class ship, under the development of various technologies, there are already battleships with iron ribs.

The technical content of the iron rib is not high, and in the important part of the battleship, a layer of iron armor is installed, and in the middle, the larger the ship, the larger the scale of the iron armor, because the specific gravity of iron is much higher than that of wood, so it is relatively heavy and costly.

Similarly, ordinary iron, his quality is not very high, and it must have enough thickness to have stronger protection, so that the iron ribs are a little heavy.

In the era when industry was not developed, the total amount of technology and steel required to make such an iron rib was very high, so in later generations, after the establishment of Britain, there were not many follow-ups, at least, not many at that time, only a few large countries followed up.

At this point, there is no problem at all for the Dinghai Navy, the steel output of the Dinghai Navy has caught up with the world powers in the early 20th century, and even in a sense, as long as there is enough iron ore, there is no problem to expand to 10 million, or even 20 million tons.

If it's just quantity, it's terrible, and if you count quality, it's even more terrible.

Niu Dali is such an excellent smelting expert, coupled with the cooperation of the card system, the materials, in addition to some materials that use high technology and machinery, others, are more combinations of different types of alloys, as long as the card system is in, there is no problem in making better steel, and it is expected that the quality of this steel has caught up with the average level at the end of the 20th century.

With such output and quality, there is no problem in making an iron rib, in fact, this iron rib should be a steel rib.

Compared with iron, steel is of higher quality, stronger and better in all aspects, and most importantly, lightweight.

In terms of carbon steel, it is lighter than iron, but the quality is far superior, for the Dinghai Navy, there are very few weapons that can pass through the steel plate, even if it is artillery, in front of a certain thickness of the steel plate, unless it is very close, far, it is difficult to pass through.

On the ship, in the right place, the steel armor placed has a strong resistance to many weapons, which is the protection of a first-class battleship.

As for the attack, it will be easier, Zhao Xin, who came from later generations, knows very well that for warships, the most important thing is artillery, what kind of broadside battle, what ballista, and bows and arrows and muskets and the like, these are all gone, only enough artillery can overwhelm everything.

First-class battleships, in the beginning, were equipped with copper cannons, which was already the most powerful artillery at that time, and only the wealthy and wealthy navy could use it, a gun was at least more than 16,000 catties, and the price of pure copper exceeded 2,000 yuan, and if you add the cost of smelting, as well as the cost of manufacturing, it may exceed 2,500 yuan.

There are more than 150 guns on a ship, and the price of a simple gun is 300,000 yuan, and only the wealthy Dinghai Navy can be equipped on a large scale.

It is true that the navy is rich and rich, but the demand for artillery is unlimited, and the navy should have 300 ships, to 500 warships of all kinds, according to 300,000 guan per ship, I am afraid that the investment in simple artillery will exceed 150 million guan.

It's just that if you need money, there's no problem with that, the Dingjun is enough to pay for the money, and the Dingjun's daily income is a lot, but if it's copper, it's troublesome.

China lacks copper, to be precise, the whole East Asia, there is not much copper, the whole world, the surface of the earth, the amount of copper is not very much, and the vast majority of the rich mines are far away.

If the copper is exhausted, even if it can't be manufactured, the limit of copper cannons is here, and the iron cannons in later generations replaced copper cannons, which is also the reason, compared with copper, the amount of iron is too much.

The navy itself, in terms of the quality of steel, has reached the standard, the key is to grope, find the right steel, and manufacture and form, this is the work of water milling, Zhao Xin just can't wait, so in the first batch of first-class battleships, as well as the follow-up battleships, copper cannons were used.

But after that, has not relaxed the research of iron artillery, with the joint efforts of many experts, or get the iron cannon, although it is still very simple, but in all aspects has surpassed the copper cannon, the most important thing is that not to mention 30,000 iron cannons, even if it is 300,000, it is very easy, the Navy has enough production to produce these artillery.

Similarly, in the seventh year of Qingli, with the emergence of iron cannons, a large number of iron cannons were equipped on battleships, which means that the cost of building the entire ship has also been greatly reduced, which is a great thing for the Dinghai Navy.

The power has increased, that's for sure, the iron cannon is more powerful than the copper cannon in all aspects, not to mention, the steel used is more suitable, and it has increased a lot at once, and the weight has also been reduced.

Under the premise of the same firing range, the iron cannon was much lighter than the copper cannon, and under the large-scale equipment, the battleships of the Ding Navy began to become terrifying.

The main body of the navy is warships, and nearly 100 warships are the main force of the navy at present, and there are many warships in the navy.

Taking a first-class battleship as an example, a gun position needs about 3-4 people, and there are as many as 700 gunners alone, plus other personnel, logistics, and direct combatants, and the entire battleship probably has about 1,000 people.

There are more than 70,000 people in 100 ships, and there are more than 70,000 direct combatants, plus logistics, supplies, and port personnel, and the total personnel of the navy exceeds 150,000, which is much higher than that of the army, and the total number of these two together exceeds 200,000, which also constitutes the main military force of the navy.