For Yang Miaozhen's suggestion, Cossack improvement of the chassar, Chen Xian refused, since the cuirassiers can fight against the Cossack cavalry, then just build a few more cuirassiers, why bother to learn from others, Wanyan Pingtao can play the Cossack cavalry well, can the East China Sea Kingdom also play well?

Of course, the main reason for Chen Xian's rejection of Yang Miaozhen's suggestion was that in modern times, although the Cossacks were famous and admired by Napoleon, they were not imitated by the European cavalry, and the reason was not difficult to measure, it was nothing more than the cost of lifestyle, and the advantage of the Cossack compared with ordinary light cavalry was not greater than the cost he added.

The East Sea State was a typical agricultural country and did not have the soil to cultivate Cossacks at low cost.

……

A few days after Yang Miaozhen dispatched troops from Shenzhou, Chen Xian's army also crossed the Yellow River from Weizhou and Xuzhou.

In order to cross the Yellow River, Chen Xian's two-way army first used the strategy of exhausting troops, and for a month before and after, he sent a fleet to cruise back and forth on the Yellow River every day, so that the nervous Jin army followed the fleet back and forth on the south bank of the Yellow River, until finally the two cavalry were directly dragged down, and the Jin people were no longer able to monitor Chen Xian's fleet with a large force of cavalry.

Only then did Chen's army send a fleet carrying an elite infantry across the Yellow River and land at the chosen location.

Immediately after the landing, Chen's infantry built improvised beachhead fortifications to meet the onslaught of the Jin army's death.

Under the threat of the death of the country, the Jin army has cheered up a lot over the years, but as a gloomy regime, they have undoubtedly been left behind by Mongolia and Northern Jin in the military changes brought about by Chen Xian in recent years.

At this time, the cavalry of the Jin State was still wearing heavy armor, as well as the iron floating tutu equipped with human and horse equipment, the light cavalry was still using bows and arrows, and their infantry was equipped with a lot of arquebuses and flintlock pistols, but the organizational form had already been eliminated by Chen Xian for many years Morris phalanx, and they also learned to cast copper cannons to make field artillery vehicles, but the caliber of field artillery still stayed at the grade of five catties.

As a result, the infantry of the Jin people who came to attack the beachhead of the Chen army were inflicted heavy casualties by the infantry of the East China Sea State who used flintlock muskets by the Chen army, relying on the low wall fortifications, but no results were achieved, and even the infantry artillery they used to attack was suppressed by the ten-jin guns transported by ship from the Eastern Navy.

After dropping tens of thousands of corpses on the beachhead of the Chen army, the Jin army finally gave up, and they watched in despair as the Chen army only took more than ten days to build a larger military camp on the edge of the Yellow River, and then poured a huge stone pier with cement, and built a wide pontoon bridge with iron cables and boats, a wide pontoon bridge that could accommodate four four-wheeled carriages!

In addition to the pontoon bridge, Chen Jun also built several trestle bridges on the shore, with this pontoon bridge and several trestle bridges, countless carriages, horses and ferries began to busily shuttle on the Yellow River.

Almost at a speed visible to the naked eye, a huge fortress "grew" on the south bank of the Yellow River!

Chen Jun even excavated two water villages on the north and south banks for boats to shelter from the coming summer floods.

In the process, the Jin army sent more and more troops and launched attack after attack, and finally they despaired and transferred all the troops that were pressed outside the Chen army's camp back to Kaifeng City......

The war launched by Chen Jun was a little different from all the wars of this era, and his preliminary preparation and execution process was so complicated that no general could formulate such a detailed plan and carry out such a complex mobilization and coordination of materials and personnel.

Occupy the beachhead, build pontoon bridges, send tens of thousands of soldiers and militia across the Yellow River, build fortresses, allocate supplies, build trestle bridges and water villages......

and so on, this series of complex actions, not to mention Li Shi, even Chen Xian, it is absolutely impossible to do it.

This is the masterpiece of the Non-General Staff Division.

As a matter of fact, a year ago, Chen Xian set up the Vajin General Staff Headquarters under the General Staff Department, deployed a large number of staff officers, and let Li Shi, Yang Miaozhen, and Yang Xiaoyi serve as the chief and deputy chiefs of staff of the General Staff Headquarters, and let them lead hundreds of staff officers to formulate the next battle plan.

For this kind of behavior of making a detailed battle plan in advance, Yang Miaozhen, who was born in cavalry, was extremely resistant, so her battle plan was very crude, almost equal to nothing.

However, Li Shi and Yang Xiaoyi, who were born in infantry, agreed with this practice of making plans in advance, so they really formulated a detailed battle plan with the help of a large number of staff officers.

Not only the formulation of the plan, but also the subsequent implementation of the plan, the General Staff Headquarters also plays an extremely important role.

Without the assistance of a large number of staff officers, it would have been absolutely impossible to carry out such a complex battle plan with the army management model of this era.

……

While Chen's army was building a well-established and impregnable beachhead fortress on the other side of the Yellow River in accordance with the battle plan, it took the Mongols four months to finally pass through the belt of fortresses built by the Jin people in the narrow and narrow area east of Tongguan.

Even the fortress that the army in the East China Sea couldn't do, of course, the Mongols didn't have a way, he used the same stupid method as Yang Miaozhen, that is, to build an earthen wall and a simple fortress outside the range of the fortress cannon, and besiege the fortress.

Once the fortress is besieged, its own role is naturally lost.

In the era of the prosperity of European fortresses, the national strength and the number of armies of European countries have always been small, and the fortresses have become a moat for each country to defend against enemies.

By the time of Napoleon, as European countries entered the industrial age, the national power of each country increased dramatically, and the number of its armies also increased significantly.

When the number of troops has increased to a certain extent, after the siege of the fortress has been divided, each country can still organize a large army to invade the enemy country.

At this time, the value of the fortress began to decrease.

Of course, to completely eliminate the fortress, it will have to wait until the powerful flowering bomb appears.

However, unlike Europe, the Central Plains, because of the large population and relatively concentrated population, coupled with the difference in military traditions, has always had a relatively large number of troops here.

Take the current Mongol Empire as an example, the total number of its Mongol cavalry plus the servant army is as high as four or five hundred thousand, and tens of thousands of troops are divided to besiege the enemy's fortress and then invade the enemy country, which is not a problem for them at all.

Therefore, in Chen Xian's view, the fortress is not used alone, but as a supply station and barracks, as a support for field troops, just like Wanyan Pingtao did.

In fact, the Mongols besieged all the fortresses, not because the Jin people were stupid, but because of their ability.

Because in the early days when the Mongols came out of Tongguan, the Jin people did form a field army of more than 100,000 people, entered the fortress belt in the east of Tongguan, and relied on the fortress and the Mongolian army to carry out roundabout operations.

But first, because of financial problems, the Jin people built the fortress is relatively narrow, and the distance between each other is relatively scattered, so it is impossible to effectively support an army of more than 100,000 people, and in the narrow area in the east of Tongguan, the width of the fortress belt is not enough, in the horizontal direction, only two or three are made of the fortress, and the volume is all besieged by the enemy, and it is pushed over.

The Jin people could not use the wide fortress belt to conduct roundabout battles and disrupt the enemy's rear route like Wanyan Pingtao.

They could only engage in a head-to-head battle with the Mongols.

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