After fully occupying the Goryeo Peninsula, Chen Heon took advantage of the abundant human resources of the Goryeo Peninsula to quickly expand the Goryeo army to four brigades.

One of these four brigades was established when it penetrated into the northwestern provinces of Goryeo and Yongju before fully entering the Goryeo Peninsula, and there were only two Goryeo infantry regiments at that time, and later after occupying and digesting the area north of the Taedong River in Goryeo, Chen Xian expanded these two infantry regiments into the Goryeo 10th Infantry Brigade.

After the full occupation of Goryeo, Chen Xian formed three new brigades on the basis of the 10th Infantry Brigade.

The 10th Brigade that Chen Xian transferred to Liaodong this time was the infantry brigade with the most experience and the strongest combat effectiveness among the four brigades in Goryeo.

The eleventh and twelfth brigades of Goryeo were taken to Hebei by Chen Xian.

With two infantry brigades and thirty-two infantry battalions, Zhang Bai set up a large formation of four rows of eight battalions in each row on the large plain in front of the fortress group.

In order to supplement the shortage of infantry troops, Zhang Bai simply separated the horse infantry brigade into two regiments and eight battalions and placed them in the infantry array.

To the left of the infantry formation was an artillery line of three artillery battalions, and two assault cavalry brigades lined up on the left side of the artillery to protect the artillery flanks.

A regiment of horse infantry was lined up behind the cavalry brigade, and they could go to the rear of the artillery line at any time to provide assistance to the artillery positions.

The Chasseur Brigade (three regiments) lined up in the rear of the main formation as a general reserve.

The large array of the two sides slowly marched on the grassland, and it took more than an hour to finally enter the combat distance at a distance of five or six miles from the fortress.

Yeluliuge and Wanyan Pingtao did not merge together, they were in their own formations, forming two flat fronts, after meeting with Zhang Bai's large array, the two large formations moved slightly, turned, formed a figure-eight, and went towards Zhang Bai's large array.

In the past three years, in order to get enough war horses from Yeluliuge, Chen Xian almost responded to Yeluliuge's needs, what iron, what food, high-quality armor, what high-quality weapons, and even arquebuses, almost what Yeluliuge wanted, Chen Xian gave him, and the only condition was to take out enough war horses.

The reason why it is almost, copper cannons, flintlock guns, gunpowder, copper and other strategic materials, of course Chen Xian will not give Yelu Liuge.

But after Yelu Liuge took the iron materials and arquebuses that he had exchanged from Chen Xian, he turned his head and went to Yan Pingtao to exchange for the formula for gunpowder.

After three years of frequent trading, Yelu Liuge ate from Chen Xian with a brain full of fat.

Of course, in the past three years, Chen Xian has also exchanged tens of thousands of war horses and a larger number of horses from Yeluliuge, and the total number of horses before and after may be close to 100,000, and it is with these nearly 100,000 war horses that Chen Xian can form a cavalry team of tens of thousands of people and a horse infantry team of tens of thousands of people.

At least in Chen Xian's view, this business is completely worthwhile.

After these three years of trade, Yelu Liuge has not only completely recovered the vitality lost when he lost to Chen Xian three years ago, but he also relied on his wealth to buy a lot of Khitan tribes in Liaodong and Liaoxi, and recruited a cavalry team of more than 50,000 people.

This time, in order to defeat the Chen army, which he had been afraid of, Yelu Liuge brought out 40,000 iron horsemen as if he had been out of his mind.

In addition to cavalry, Yeluliuge also established an infantry force, which he built entirely after Chen Xian's army.

Yelu Liuge took advantage of the opportunity to do business with Chen Xian and spent a great deal of money to buy several low-ranking officers from Chen Jun.

He appointed these junior officers as instructors and built a Chen-style infantry in the same way.

Yeluliuge recruited the Bohai people on the Liaodong Plain, the Jurchens in the mountains, and the Goryeo, and formed an infantry team of more than 50,000 people, of which 30,000 were trained according to the tactics of the Morris phalanx, and the other 20,000 were all musketeers who were used to defend the city.

This time, Brother Liulu went out on an expedition at night, with 40,000 iron cavalry, 20,000 infantry, and dozens of bronze cannons.

Of course, these copper cannons were not bought from Chen Xian, no matter how much money he gave, Chen Xian would not sell him the copper cannons, which Yeluliuge got from Wanyan Pingtao at a great price.

Yelu Liuge and Wanyan Pingtao, two past enemies, had long been united under Chen Xian's tremendous pressure

Wanyan Pingtao's army was not less than Yeluliuge's number at all, and he came out this time with 30,000 iron cavalry and 30,000 infantry.

The cavalry under Wanyan Pingtao is the all-round cavalry that stole the division from Yang Miaozhen, and the infantry is the Morris phalanx that stole Chen Xian, this tactic used to train tens of thousands of people, it is basically impossible to keep it secret.

The number of bronze cannons in Wanyan Pingtao's team was significantly more than that of Yeluliuge, with more than a hundred.

Wanyan Pingtao arranged the cannon on the left flank of the infantry, while Yeluliuge was the opposite of Wanyan Pingtao, he arranged the artillery on the right flank of the infantry, and after the artillery emplacements of the two were spread out, they were connected together, forming an artillery line that was much longer than Zhang Bai's artillery array.

On either side of the artillery line were the infantry formations of Wanyan Pingtao and Yeluliuge, and the cavalry of both men was arranged on the outermost side.

The two sides lined up in a large formation several miles wide, slowly moving towards each other on the vast grassland of the Liaohe Plain, gradually approaching.

When the large formation of the two sides approached a distance of about seven or eight hundred meters, the artillery lines of the two sides stopped one after another, and the artillerymen began to get busy......

The infantry of both sides did not stop along with the artillery line, they continued to advance.

A moment later, the artillery on both sides began to roar almost simultaneously.

Shells swept through the artillery lines of both sides in a low and flat trajectory, and some unlucky cannons or artillery carriages were swept by the shells, and the hit cannons or wood chips on the artillery carriages flew in all directions, inflicting heavy casualties on the artillerymen who were not wearing armor.

The infantry on both sides ignored the artillery fire from both sides, and they steadily pushed towards each other.

At the urging of Wanyan Pingtao's messenger, Yelu Liuge gritted his teeth and ordered his cavalry to charge Zhang Bai's artillery position with most of the iron cavalry.

Yelu Liuge and Wanyan Pingtao, who had been staring at Chen Xian, sent people to invite many survivors from Hebei who had participated in the first war between Chen Xian and Mu Huali, so both of them were more clear about the first war between Chen Xian and Mu Huali.

When they saw that Zhang Bai's artillery position was in front of the rapid combination of repulsive horses, and there were horse infantry behind to protect them, they naturally remembered the tragic fate of the Mongol and Han cavalry who directly attacked Chen Xian's artillery formation in that war, so Yelu Liuge ordered his cavalry to attack the Chen army's artillery array from the flank.

For Jereliugo's cavalry assault, Zhang Bai immediately ordered the 3rd Assault Cavalry Brigade to launch a counter-charge against the enemy.

In the war between Li Shi, Yang Miaozhen and Mu Huali, the wall charge of the highly trained professional cavalry reappeared in the classic scene of the loose tribal cavalry.

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