It is also not surprising that the army and navy chose the opposite of cast iron and bronze artillery in this period, on the contrary, it is normal.

Because the requirements for artillery are very different for the two!

On the part of the army, after so many years of operations, the artillery used more times and in large quantities, and they also have their own understanding, and the artillery directors and other professional artillery generals of the army believe that the future development of artillery in the army should be divided into three types, the first is field artillery, the second is infantry support artillery, and the third is siege artillery.

In order to balance the power and mobility, the artillery director believes that the caliber of field artillery should be greater than five catties, but not more than nine catties, and the current combination of five-catty artillery and nine-catty artillery is already more suitable.

Infantry support artillery is all kinds of shotguns, at present, mainly two-pound shotguns and three-pound shotguns, the artillery director believes that the performance of these two types of artillery is not good, and should continue to be developed.

Siege heavy artillery, including long-barreled cannons of more than 14 pounds and howitzers of larger caliber and more than 24 pounds, the number of equipment is not large, and it is only used in specific battles, and there is no requirement for mobility, but it must be powerful.

According to the direction of the army's artillery development, the army believes that the performance of field artillery is the most important, and the accuracy of hitting and the ability to withstand rapid fire are very important, and only the quality of the body barrel is average, it is easy to explode during rapid fire, and at the same time, the iron cast five-kilogram artillery with a body barrel life of more than 400 rounds is undoubtedly not in line with the needs of the army.

Every time a large-scale battle is carried out, the army's logistics units have to carry a considerable number of spare artillery pieces in addition to a large number of artillery shells.

Therefore, it is not surprising that the army, during the Battle of Hanyang, wanted to propose to replace the iron-cast five-jin artillery with a bronze five-kilogram artillery.

But what about the navy, their demand for artillery is as powerful as possible, weight is not a problem, and the life of the body is not a problem, anyway, in a decisive naval battle, it is impossible for a single artillery to shoot more than 500 or even thousands of shells, and even if it can fight, there are not so many ammunition on the warship.

And there is also a very important point that the army's field artillery is light, relatively speaking, the demand for raw materials is relatively small, but what about the navy's artillery, the nine-pound artillery is only a medium-caliber artillery, and the fourteen-kilogram artillery is the main gun, not to mention the battleships under construction on the army's side, and the scheduled main gun is a thirty-two-pound naval gun.

These are all big things with long tubes, and they weigh several tons casually.

A few tons of cast iron and a few tons of copper, the difference in cost is huge!

What's more, the Navy still needs a lot of these large-caliber guns, not a few dozens, but hundreds or thousands.

Although the navy is the little brother in the Tang military, they are equipped with much more artillery than the army.

There are dozens of guns in a cruiser and frigate, and there are dozens of cruisers and frigates in the Navy at present, and if you add patrol ships and river warships, it will be hundreds.

Therefore, the navy now urgently needs to use iron to cast large-caliber naval guns, so as to effectively reduce the pressure on military spending.

As for the iron-cast artillery for the army, it is too heavy, the life of the body tube is poor, and the ability to withstand bore pressure is not good, this is not a problem for the navy at all!

Bear the pressure difference in the chamber, then the barrel is thicker, the caliber is larger, at most the weight is a few tons more!

As long as the cost comes down, everything else is acceptable!

The army and navy, the demand for artillery and development, has now gone to a fork in the road, and in the future, it may be difficult to see the army and navy equipped with the same artillery.

Not to mention the development of artillery in the navy and army, nor to mention the happiness and troubles of the army in the Hanyang Campaign, because of the lack of artillery tubes!

The people in the logistics department and even the Ministry of State-owned Enterprises don't care what people in the artillery unit think, they don't transport so many shells to curry favor with the army artillery generals, they do it for their own future.

The logistics department is also part of the Privy Council's report, and those logistics generals know very well that in the strategic planning of the Privy Council, the Southwest Campaign is the last large-scale battle in the near future.

After the Southwest Campaign, although the Tang Army will still fight in various places, it is basically unlikely that such a large-scale battle will occur.

In other words, on the side of the logistics department, there is no need to worry too much about the fact that after the southwest campaign consumes too much ammunition, other aspects cannot be taken into account, anyway, it is impossible for the arsenal to stop production, and artillery shells will be produced every day.

Moreover, everyone knows the importance of the Southwest Campaign, and the Logistics Department also hopes to give full play to its role in the Southwest Campaign, so that the Son of Heaven can see that the victory of the Southwest Campaign is inseparable from the efforts of their Logistics Department, and even because the ammunition supplied by the Logistics Department is sufficient, they can win.

After the end of the Southwest Campaign, the domestic reunification campaign will come to an end, and when the time comes, it will be impossible for the soldiers to disarm and return to the fields, but it is certain that military spending will drop sharply.

If nothing else, in the eighth year of Xuanping, military spending will definitely drop sharply, and when military spending declines, the military will definitely have to tighten its belt to get by.

Dismantling the main forces? This is impossible, the main force of the Tang Army now has a total of 14 infantry divisions, 10 mixed regiments, and the total strength is less than 200,000.

Layoffs are impossible!

However, in order to reduce military spending, in addition to the reduction of war expenses, it is estimated that non-essential expenditures in other areas will be greatly cut, such as logistics troops.

Nowadays, the scale of the logistics troops in the Tang Army is quite large, although they are all requisitioned people, but to manage these people, they must also be officers of the logistics department, under the command of the logistics department, the logistics troops responsible for logistics affairs throughout the country have a total of more than 30,000 people, which is not a lot at all.

After the Southwest Campaign, some of them will definitely be dismantled, and what the Logistics Department is striving for now is to preserve the backbone of the Logistics Department as much as possible, and not to cut it too ruthlessly.

Li Xuan naturally doesn't care too much about the thoughts of the generals under his command, he just needs to see the result he wants to see: surround and annihilate the Dubiao Chinese army, capture or kill Zhang Yue!

He didn't bother to care about the rest.

When the artillery unit fired countless shells towards Hanyang Fucheng, the infantry in the Tang Army finally launched an attack on the fourth day!

It was not a large-scale general attack, but a small-scale exploratory attack, mainly to test how much remnant strength the Ming army in the city was and whether the effect of the artillery bombardment had reached expectations.

This time the tentative attack, but the effect is surprisingly good, the 10th mixed regiment that undertook the task of the tentative attack, just used a surprise attack, that is, to capture one of the sections of the city wall!

If it weren't for the fact that this was just a tentative attack, and the follow-up troops didn't keep up at all, it is estimated that the 10th Mixed Regiment would be able to directly tear through the defense line of the Ming Army.

Although it was finally forced to retreat, the success of the 10th Mixed Regiment also gave the Privy Council the confidence to launch the final general attack!

They believe that the time is ripe!

So Shu, on the night after the 10th Mixed Regiment launched the trial, Lieutenant General Lei Wan officially asked to launch a general attack on Hanyang!

After Li Xuan glanced at the battle plan submitted by the War Department, he approved a big quasi-word.

This announced the official start of the general offensive of the Hanyang Campaign!

At dawn the next day, the artillery units of the Tang Dynasty's division launched a rapid rapid-fire artillery bombardment before the sun rose and the sky was still white!

The artillery units, without regard to the life of the body tube and whether it will explode, directly fired a rapid fire!

When the artillery units launched rapid fire in the main assault directions such as the city head, the various assault battalions that had been prepared long ago jumped out of the communication trenches and rushed in their respective assault directions!

And the troops in the rear are also quickly catching up!

In fact, the general attack of the Tang Army was not sudden, although it was dawn and the sky was just dawning!

But the general attack of tens of thousands of people, how could it be concealed from the Chinese army in the city!

Tens of thousands of you are lined up outside the city to charge, and fools know that you are ready for a general attack!

But even if they knew, the Ming army in the city had made considerable preparations, but the remaining more than 20,000 Ming troops in the city faced a general attack by the Tang Army that exceeded the first round of charge, which was more than 40,000 people.

It's impossible to fight back at all!

You must know that in this general offensive operation, just the assault battalion, the Datang Army has invested as many as eight at one time!

Almost every weak point in the defense of the Chinese army has an assault operation to launch a charge!

Li Xuan also crossed the pontoon bridge with his ministers at dawn, when the general offensive was launched, and went to the front line in person!

It's not for the sake of command, it's also for the sake of morale!

When he appeared on the front line wearing his unique dragon-patterned military uniform, wearing the sword of the Son of Heaven at his waist, wearing black leather gloves, stepping on long leather boots, and riding a brown Central Asian horse with a height of one meter and a half a half!

The officers and men of the 1st Infantry Division, who were responsible for the main attack on the western flank, were boiling!

Of course, in addition to Li Xuan personally going to the front line, what made them boil was also because the glorious and great, greater than the sun, the Son of Heaven personally announced to the soldiers: "Anyone who participates in this battle will be paid double this month, but all those who have made meritorious service will be doubled, and those who have outstanding military merits will be knighted!" ”

Who is Li Xuan, he is the Emperor of the Tang Dynasty!

If you say it, it's a holy decree!

Ordinary soldiers fought hard to kill the enemy for double pay and double their merits, and those ordinary officers were eager to rush up and fight in person for double their military merits.

And those middle and high-ranking officers, one by one, are drooling over the title!

Even Li Chunjing and other high-ranking generals, their eyes are red one by one!

Because knighthood is not only about people who don't have a title to get a knighthood, but also for them who have a knighthood, it is also an important opportunity to upgrade their titles to the next level!

In the previous battles such as the Battle of Huangzhou, Li Xuan did not have a great meritorious hero, no one would think that Li Xuan had forgotten, everyone knew that Li Xuan was waiting!

And now it seems that after the Battle of Hanyang, it is time for the Son of Heaven to be crowned a hero!

Therefore, today's battle, even for a person like Li Chunjing, who has already reached the title of marquis, is a rare opportunity!

Whether this can successfully obtain a duke or even a hereditary replacement when the unification war ends depends on today!