Bai Liyan (Wei Xian) saw it in his eyes, but paid more attention to the tactics of the cavalry of the two armies.

The pioneer battalion started with cavalry warfare, and its tactical principles never relied on the brutal and rigid tactical charge of clusters, but always relied on tactics such as maneuvering, uncertain, sometimes concentrated and sometimes scattered, concentrating on breaking through strong attacks, or cutting off the wings in the middle to outflank, attacking and disturbing meals, etc., and never fought in large-scale clusters.

Jin Xuedi has a lot of cavalry, this time Baili Yan's southern expeditionary army only has 12,000 elite cavalry, large-scale cavalry confrontation is inevitable, and the tactics of dealing with the Central Plains cavalry before seem to be quite stretched at this time.

The tactics of the cavalry of the Central Plains are mainly based on group charge, commonly known as a swarm of bees, and the tactics of Jin Xuedi's cavalry are also based on group charge.

However, the short-distance sprint speed of the Jin Xuedi cavalry is still much faster than that of the first-class mixed-race war horses in the Central Plains, and the vanguard battalion relies on the cavalry tactics of mobile and flexible tactics, and the first principle is that the horse should be better than the enemy, and only the horse speed is faster than the enemy, so that it can have the capital to be flexible and roundabout. Nowadays, horses are inferior to people, and no matter how flexible the agitation tactics are, they have lost the advantage of speed and mobility, and it is difficult to use them.

As the saying goes, martial arts in the world are only fast and unbreakable, others are faster than you, no matter how powerful you are, you can't beat it.

The Song and Xu cavalry are the most warlike cavalry in the Central Plains, and the individual tactical ability is extremely strong, if it is not for the equipment that is far inferior to the people, and the resources of the Jin State, the Wei State, and the Sun State are blocked, and it is not impossible for the Song State and the Xu State to dominate one side by virtue of the advantages of horse farms and cavalry.

At this time, the Song and Xu cavalry had already pounced on the left flank to attack the barbarian cavalry, and the two armies staggered, and the flesh and blood flew in an instant, and the corpses were fragmented.

The Song army and Xu army imitated a small amount of chain mail, and the texture was far inferior to the steel chain mail of the Xianjun and Yuke, and the sharp weapons were very easy to pierce under the impact of the inertia of the war horse, and stretched open the gap of the ordinary iron ring, causing heavy damage.

After a brief charge and fight between the cavalry of the two armies, they quickly turned to hand-to-hand combat, and the advantage of chain mail against the blade weapon and slashing and resisting immediately became unmistakable.

A large influx of Song and Xu cavalry quickly cut off the detour passage on the left flank of the barbarian cavalry, and under the continuous fierce attacks of the Yuke and Zhijun, the barbarian infantry was defeated again and again, and the Zhijun even had room to organize a hook and sickle array, and the effect was far more effective than stabbing the barbarian army in front of the barbarian infantry.

"The middle line of defense has been penetrated, and if it continues like this, the left flank of the barbarian army will be cut off."

Bai Liyan said to herself, and Jiang Jie answered:

"But my lord, the light and heavy cavalry of the barbarian army is outflanking from the right flank, and it is likely to cut off the retreat of the middle army. It even threatened the retreat of the left-wing Song and Xu armies. ”

"No, when the Jin and Wei armies are killed, the Yuke cavalry and the infantry of the Zhi army who have rushed into the formation will immediately turn around and counterattack the light and heavy cavalry of the barbarian army outflanked from the right flank, and at the same time the Jin and Wei armies advance from north to south, while the Yuke retreats from the south to the north, and the Jin and Wei armies and the Yuke advance north and south.

Due to the chaos of the central infantry formation of the barbarian army, it was impossible to reschedule, reorganize the formation, restore the infantry battle line in a short period of time, and lose the ability to shock in clusters.

The right flank, which was outflanked by such a barbarian army, became the salient of the coalition army's north-south attack in the blink of an eye, and fell into a counter-encirclement. After the two armies of Yuke, Zhijun, Jin and Wei withdrew into the city one after another, the Song and Xu armies finally retreated, and the cavalry on the right flank of the barbarian army was very likely to suffer a second heavy defeat. ”

"Can we completely cut off the central infantry of the barbarian army, isolate the left flank of the barbarian army, and then encircle and annihilate it?"

Jiang Jie boldly assumed, Bai Liyan shook his head:

"No way. Our army suddenly attacked the barbarian army with 1230,000 men with 105,000 men, and the two armies fought head-on, and there was absolutely no reason for more than 100,000 people to defeat 1230,000 people. Our army is not all elite in this battle, at best, there are only more than 50,000 elites, and the rest are all soldiers, and it is really difficult to shake Jin Xuedi's army.

Besides, the barbarian army camp was only six miles away, and it was easy to come to reinforcements. Therefore, our army can only take advantage of it and leave, and cannot fall into war. It is necessary to take advantage of the fact that our army is free to advance and retreat, and withdraw the soldiers and horses into the city to prevent chaos after dark. ”

At this time, the sky was dark, the sun was red, a bonfire was set up on the city, and the archers lit rockets, and shot rows of rockets fifty paces out of the city to illuminate the ground.

At four o'clock, night fell, the left flank of the barbarian army was repulsed, the central infantry line broke through, and the Yuke and Zhi armies quickly expanded the gap to the left and right flanks, forcing Jin Xuedi to mobilize his forces and detour to the right behind the coalition army.

"Dezike, the left flank of Körle has been driven back by the northerners, and our front is being cut in two by them, so let's take advantage of the fact that the right flank is not finished, and quickly withdraw our troops." Temir urged.

"No, our right wing has already detoured behind their backs, and if we hold on for another hour, they will be wiped out by us."

"You're crazy, I'm going to transfer all the cavalry in the battalion before they completely tear us apart."

"Go, you go. With such a narrow battlefield, there are no less than 300,000 people at all, and it is best to annihilate them outside the city before the trebuchets in the northerners are erected. ”

The two argued, and the deputy commander of the corps, Temir, took the general and led the guard, and hurried back to the camp.

At the same time, the right flank of the barbarian army detoured behind Yuke and Zhijun, cut off the retreat, and quickly continued to move to the left flank, trying to cut off the retreat of the Song and Xu armies together.

Seeing this, Cao Chi in the city immediately ordered:

"General Sangshi, blow the first trumpet!"

"No, blow the first trumpet!"

When it is young, the horn sounds, dozens of wrestlers blow the huge horn at the same time, this is a kind of horn that is rarely used in the Central Plains, made by Ba Yingshu, the horn is strong and chaotic, melodious and far away, because of its noisy and unpleasant sound, like mourning, the Central Plains is almost difficult to find.

At this time, the night is dark, and the flag can no longer play the role of transmitting information, and sound and high-brightness signals are the only means.

The sound of the trumpet lasted for about half a minute, and then it fell again, and the Jin and Wei troops poured out to kill the barbarians along the path illuminated by the rockets.

A quarter of an hour later, the second horn sounded, and the Jin and Wei troops entered the right flank of the barbarian army. At the beginning of the battle, the Jin and Wei troops encountered a head-on attack from the barbarian heavy cavalry, and they fell into a stalemate when they were young.

At this time, the third trumpet sounded, and the royal cavalry that had entered the formation quickly broke away from the engagement, covering the rapid retreat of the Zhi infantry to the north, and penetrated directly behind the right flank of the barbarian army.

Bai Liyan looked up at the moon, the time was about the end of the hour, the beginning of the hour, the rhythm of the battle was completely under the control of the coalition forces, and it was surprisingly smooth, which couldn't help but give people an illusion.

"It's weird, is it really that the equipment of the coalition army is on par with the barbarian army?"

Due to Jin Xuedi's widespread use of refined iron with manganese elements, the equipment rate of the iron tools of the coalition forces fighting in the south was significantly higher than that of the Central Plains.

At this time, Jiang Jie pointed to the sky and shouted:

"Look, sir!"

Bailiyan took advantage of the situation and found that the three watchtowers at the head of the city, which were separated by a hundred steps, were burning with an unusually dazzling white light, accompanied by an astonishing whistling sound.

"It's a whistle!" Bailiyan blurted out.

"My lord, I also bought a lot of them when I passed through Song Kingdom, right?"

"Well, it's still on the way. In fact, we can do it in the future, and it is better than that of Song Guo. ”

The flying whistle is the top secret specialty of the Song Kingdom, the common flying whistle is a hollow rod cast in copper, one end of the opening can be blocked, the inner diameter is five or six centimeters, the outer diameter is seven centimeters, the length is about ten centimeters, and the inside is empty. But it is filled with a white powder, and when the lid of the copper can is opened, it emits a dazzling light, a white blinding fire, and a sound. Even if it's a few kilometers away, you can see it clearly.

This type of whistle does not need to ignite and can be ignited by itself when opened. At first, Baili Yan thought that the white powder might be white phosphorus, which does have natural characteristics at room temperature, but if it is a cold winter, this kind of flying whistle can also be used, and it is obviously unlikely to be white phosphorus.

Secondly, white phosphorus needs to be chemically prepared, and a slight accident will cause a fire, which can be obtained with current technology, only by drying the bones, white phosphorus vapor can be obtained immediately, or boiling urine with sand and gravel, it can also be obtained, but it is only obtained on a small scale, and cannot be obtained in large quantities industrially.

Because the flying whistle is a top-secret thing, it is only equipped with the Jin army, the Song army, the Xu army and the royal guests, and it is difficult for other vassal states to get this thing from the Song State. When passing through the Song Kingdom this time, Bailiyan bought twenty from the Song army at the price of five steel blades each.

After carefully dismantling it, it was found that the white powder in it was actually a magnesium compound mineral, but the Song people used a simple and crude chemical reaction principle to further purify the magnesium compound, and then grind it into powder, and the dazzling white light emitted by the flying whistle was the result of the combustion of magnesium powder compounds.

As for the automatic ignition device, it is quite surprising, the Song people processed the flint into a diameter of one centimeter, left and right round bars, and clamped two rough fire sickles on the round rod with reeds, and the process of pulling out forcefully produced sparks, and the sparks fell on the magnesium powder, which could ignite the fire in an instant. If it can't be successful once, the flint can be plugged and pulled repeatedly, and as long as there is a spark, it can be burned, and its principle is very similar to the modern magnesium rod universal match.

The air flow generated by the intense combustion quickly hits the honeycomb outlet at the whistle opening, forming an amazing buzzing effect to achieve the effect of making a sound and transmitting information.

The flying whistle that the royal guest is using, at least the size of a wine jar, is ten times the size of the flying whistle that can be bought in the ordinary, and the amount of it is filled is almost a big gift, the burning time is long, and the brightness is amazing, I am afraid that it can be seen clearly from more than ten kilometers away.

The three huge flying whistles emitted a dazzling glare and an astonishing howling sound, which quickly spread throughout the entire battlefield, and the allied forces of the princes quickly adjusted their state.

Yuke, Zhijun into the back of the right flank of the barbarians, in the Jin army, the north and south of the guards, the strength of the superior, the front rampage, quickly break through the right flank to open the gap, under the cover of the Yuke cavalry, the Zhijun foot soldiers quickly withdrew through the gap to the city, Yuke left thousands of cavalry, the rest followed by an orderly withdrawal.

At the same time, when the three whistles sounded, the royal guests in the city shouldered their shoulders, and more than 50 trench cars were erected and passed side by side in the moat outside the city.