Thirty miles south of the Wuding River is where nearly 30,000 guards of Cao Bin's department are located, that is, the Fourth Army of the Dingxi Army.

They left more than 3,000 people to defend the fort and continued to build the fortress with tens of thousands of people. Because the design of Wuding Fort requires barracks and warehouses for 70,000 or 80,000 troops, it still occupies a lot of land; More than 2,000 people were needed for the full defense of the fortifications, and the men and horses did not dare to leave too little.

Cao Bin's troops were originally marching twenty miles away from the Chinese army, and after receiving the military order, they retreated ten miles to make a gesture, and then stopped to find a high place to set up a camp to garrison.

On the third day, news came from the Chinese fast horses that the enemy's horse corps, numbering an unknown number, but more than 10,000 horsemen, had approached the rear from the eastern mountains.

Cao Bin immediately ordered to be on guard!

It was a quiet night, but Lu Fei knew that the enemy soldiers were approaching, and he was expected to appear nearby tomorrow morning.

The soldiers who were not on duty all rested early, and at this time, even the pro-soldiers of the Chinese army standing guard were standing or sitting. Lu Fei looked out of the open tent and saw a personal soldier sitting next to the fire, burying his head in a needle and thread, silently sewing the clothes on his body. The soldier was stocky, but very young, and looked like he was in his teens.

Lu Fei stretched out his hand and rubbed his neck, and continued to write and calculate on the paper on the rudimentary board.

Shortly after the flat-firing bronze cannon was built, there was a gun watch. The so-called gun table is to specify the size of the gun, the amount of charge, and the weight of the iron pellet, and then use the parabolic formula, after calculation and testing, to make a table, and compare the range of each elevation angle.

However, this cannon table is based on a flat table. Now Lu Fei is temporarily calculating the cannon table with a slope of more than ten degrees, because the time is urgent, he has just set up camp today, so that he has not yet calculated it when it gets dark.

…… The original flat cannon table was made in the Bianjing campus.

First of all, the gravitational acceleration is calculated, and the data in the original formula cannot be used, because there is no comparison between the unit meter, the second and the real-world measurement. The method is to re-experiment. Time is measured as an hourglass with a scale, measured in flicks of the finger (approximately equal to seconds); The units of length are zhang, ruler, inch, minute, centimeter, millimeter, and wire, of course, the so-called precision unit can be ignored, with the current artillery technology and measuring tools, too small units are meaningless at all. The acceleration due to gravity can be calculated by measuring the time and height of the iron ball falling from the floating mass, and by averaging it several times.

This is followed by the calculation of the muzzle velocity vector generated at the elevation angle, which is also very simple. The elevation angle is modeled with a wooden protractor, and the trigonometric function value is only needed to draw a triangle according to the angle and multiply and divide by the length of the figure on each side.

The cannon table made in this way not only has a simple comparison table, but also can set a formula; Temporarily found angles that are not on the gun table, can be quickly calculated on the spot with formulas.

…… When there is a slope on the actual battlefield, it can also be calculated using the basic kinematic formula to form a new gun table.

As for the measurement of the range length of the battlefield, Lu Fei probably remembered that in modern times, gun mirrors were used; And now it is clear that there is no such thing, and it cannot be done. He's stupid.

There are two methods, one is to choose those who have a strong sense of distance to estimate with their eyes, such as those who used to observe the distance and distance for the catapult on the city wall when they were defending the city. The second is to use a rope to measure the integer distance on the battlefield, nail the wooden stakes, and use those wooden stakes as a reference when the war starts.

Now there are a lot of wooden stakes on the slope ahead, which are nailed during the day, and they are sparse. It is estimated that the enemy army does not know what to do, because there is no defensive effect.

…… Nothing happened overnight. As soon as it was dawn, Lu Fei woke up to the familiar rhythm of drums and trumpets outside the barracks, got up and dressed in armor. A group of soldiers and attendants took care of him.

Lu Fei asked, "The enemy army has arrived?" ”

The soldiers said: "Back to the emperor, his vanguard arrived as scheduled and occupied the high hillside to the west. ”

Lu Fei stretched out his arms, and the eunuch and the male chamberlain hurriedly put a clean liner with green salt washing and fragrance on his body. Lu Fei's expression was calm and composed, his eyes were calm but sharp, and his spirit was adjusted to the best state.

Lu Fei quickly put on the refined plate armor and tied the dark purple cloak with the help of everyone. He is not yellow in the battle formation, it is too bright, and it is easy to attract the care of the enemy soldiers under special circumstances.

The belt of the gold buckle was tied around his waist, and Lu Fei lifted the sword and put it on. Then wash up and eat half-full.

He walked out of the tent neatly and stood on the slope for a while. At this time, the sky was brighter, in the early spring morning, the ravine was still shrouded in milky white and light mist, Lu Fei looked up at the sky, the weather was very good today.

There was no dancing on the top of the mountain in the west, Lu Fei looked at it, and could see that there were flags on it, and there were figures standing on it.

Most of the people who stood on the high ground before the war were the commanders and generals of the coalition forces. Lu Fei was there yesterday, maybe the footprints are still there, obviously guessing that Tuoba Deming may also be there, Lu Fei has a very close feeling in his heart.

Different people stand on the same piece of land, and their positions will be different, but what is Tuoba Deming thinking now?

Lu Fei looked at it for a while, and the generals came to the Chinese army one after another. The forbidden army's battle formation habits for many years still retain a lot, first to the main general, and then to deploy the battle formation.

Nearly 100 people came, and almost all the generals above the commander arrived. Everyone watched the battle formation on the opposite side while waiting for the landing fly to give the order.

"Last night, the army had a discussion, and everything was deployed as originally planned." Lu Fei said.

At this time, the generals fell silent.

Lu Fei said: "According to the truth before the battle, the generals can make a reasonable decision on the spot. However, bronze cannons and arquebuses are not allowed to be used without permission! ”

The generals shouted in response.

Lu Fei paused. Xindao, like this kind of decisive battle, it can only happen if the two sides are willing to do so, if the party and Khitan coalition forces are unwilling, can they concentrate the army here? This is an opportunity, Lu Fei is eyeing the cavalry of the coalition army...... Especially the iron cavalry of the Liao army, because in his eyes, only the elite cavalry of the Liao army can be regarded as a qualified and organized cavalry army!

It is necessary to lure the Liao army to ride up so that the war can really begin.

Lu Fei's expression became solemn, and he said: "The forbidden army is composed of the most elite sons and daughters in Kyushu, and the equipment, food and clothing are the best, and they are the people's fat and people's ointment for countless Han people!" ”

This was immediately serious, and the generals straightened up in awe. People-oriented, it was the Tang Dynasty that had thoughts, and Lu Fei's words were still very down-to-earth.

Lu Feilang said: "The sons and daughters came here over the mountains and mountains, not to make a fool of themselves and make people laugh, but to make a fool of themselves, but to make the face of the Han family, and not to live up to the ardent expectations of me and the people of Limin." For the sake of dignity, for the protection of the country and the people, and for every inch of the land left by the ancestors, I wish you to kill the enemy with all your might! ”

People responded.

Lu Fei didn't say much after hearing this, and ordered: "Prepare for war!" ”

The generals shouted: "Serve the emperor!" "God bless my emperor, long life knows no bounds!"

……

The mountains were full of marches of troops. Zhai Shigui looked at the momentum in front of him, and from the purging military appearance, he said: "The number of enemies is only one-third of ours, but this is a vicious battle. ”

The number of people in the Great Sage Army's infantry and cavalry here is only more than 40,000 in total, and the coalition army is about 120,000!

Tuoba Deming said: "The Great Sage Army arrived here first, why don't you choose the mountain we occupy, but the place opposite?" ”

Zhai Shigui didn't understand it at all, and only said: "But the opposite side is open, and you can have a good fight!" ”

The coalition forces marched mightily and arrived at the battlefield one after another, with greater momentum, many men and horses spread out more horizontally, and gradually the situation seemed to be a half-arc, forming a semi-encirclement on the flanks of the Great Sage Army.

More than 160,000 horses and horses gathered in this place, and the noise between the ravines was unusual, and the flags were like clouds, and the scene was very vast and magnificent.

The two rangers had already clashed in the ravine between the two mountains, and the figure of the knight with the bow was seen passing in the distance.

The coalition forces were absolutely superior in numbers, and both Zhai Shigui and Tuoba Deming decided to take the initiative to attack. Zhai Shigui suggested: "The frontal slope is the gentlest, and the infantry of the front army can get close to the formation, and then attack from the infantry. The cavalry flanked and flanked and stood still.

Although there are preparations for training, the war horses of the party army may be unsuitable in the face of the explosion of firearms, and it is most appropriate to use the infantry army against the enemy's infantry army formation first. ”

Although Tuoba Deming was the supreme commander of the main force, he also believed in the experience of the Liao army's generals, so he adopted the suggestion.

Zhai Shigui said again: "The number of the Great Sage Army is smaller, but the army is neat and tidy, and it can't be attacked at one time, so you can change people and horses to attack in turn." ”

After some preparations, the Dangxiang infantry moved forward from the hillside, they were also a phalanx composed of groups of people, with different clothes and armor, many people carried bows and arrows, and weapons were varied, but one by one they also had brute strength.

Hengshan produced iron, and the party infantry army had a high armor rate, but it was obviously unable to organize a blacksmith workshop to process the armor, and the armor worn by the soldiers was messy, and they were all homemade at home.

Tuoba Deming is still very confident, it is true that he can not fight well dressed in battle, but he still relies on the courage of people!

A large army of infantry spread down the mountain, like a black torrent. Tuoba Deming looked at this spectacular scene, excited and nervous. Everyone comes to fight to win!

Between the valleys, drums and shouts roared, shaking the mountains and rivers. Tuoba Deming clenched the hilt of his sword tightly, and his knuckles turned white from overexertion.

In the distance, a large number of people and flags surged one after another, some stopped in place, some people in front continued to move forward, and the cavalry on both wings was also moving. Farther on the hillside, foot riders are also moving according to certain rules. The crowd of 100,000 people is like a huge war machine, slowly moving and making loud noise!

In this backward era of small-scale peasant economy and nomadic herding, countless people have shown the highest degree of organization of the times in the battle formation, and have also concentrated a large amount of resources within the reach of the productive forces.

Lu Fei stood on the hillside, observing every part of the mist without saying a word. It can be seen that the rhythm of the coalition offensive is very calm...... They deployed a group of cavalry on the flank between the front and rear of the Great Sage Dynasty Army, monitored Cao Bin's troops, and concentrated their forces on biting the more than 40,000 Great Sage Army infantry of the front army between this ravine, and it seemed that the situation was indeed good.

Lu Fei paid attention to the wooden stakes on the battlefield, about 1,200 feet away from the front line of the Great Sage Army, the coalition army had concentrated more than 50,000 infantry and lined up there. There are hundreds of phalanxes alone, forming a large array with a wide horizontal plane and a great depth.

The main force of the enemy's cavalry was still farther behind, and the cavalry on both wings of the infantry army had different clothes and armor, and there was a kind of ragged appearance, not like the elite cavalry of the Liao army.

In a few moments, the forward infantry of the coalition army continued to advance uphill without stopping, with a strength of about 4,000 or possibly 5,000. Below the hillside, drums beat loudly.

......The vigorous horns of the bull horns sounded in unison, swept through the noisy crowd in the wind, and leaped between the countless valleys.

On the hillside, a row of heralds waved the two-color flag in unison with their left and right hands, with a red heart on the left hand and a black heart on the right hand. The red flag is backward and the black flag is forward, repeatedly staggered and danced.

The front of the Great Sage Army immediately heard the loud shouting and scolding of the generals. The troops were suddenly staggered, and the four rows of infantry with spears in front turned around and passed between the gaps between the arms and hands of the gods in the back of the queues; Then the heavy infantry in the rear, wearing steel helmets, and holding swords and shields, moved to the front.

The enemy soldiers with all kinds of weapons have come up along the gentle hillside, and countless people have trampled the loess into dust, and the strange cry of "Wow Wow La...... is like a large group of wild beasts rushing out of the mountains.

The soldiers of the Great Holy Army all widened their eyes, staring at the red-eyed crowd of people who were clad in iron like savages, holding swords, guns, clubs, and shields.

A general in the crowd above shouted, "The Great Sage Dynasty will win!" ”

"Hurrah...... the cries of the armies suppressed the noise on the battlefield. Drink! The heavy infantry, in a neat formation, lifted their finely crafted iron-clad wooden shields and placed them on their shields with one-handed swords in their hands.

A group of enemy soldiers in the middle rushed forward with a shout within a hundred paces, and the chirping of the people did not know what to mean, but the voices of the people were filled with nervousness, fear, and angry roars.

"Ready!" "Prepare ......," shouted the commanders, drawing their swords.

"Bang!" A gong sounded, and the divine arm of the commander in the middle raised his bow and arrow, and there was no need to aim, and the string of "crackling ......" sounded, and a rain of black arrows in the air filled the sky.

"Put!" "Putting ......"

In an instant, enemy soldiers from all over the horizontal area rushed up and killed, and arrows flew up and down in the air. The falling arrows hit the iron armor of the Great Holy Army, and there was a loud "clanging" sound, and a miserable scream was heard from time to time.

In the middle place, there were first short-handed soldiers, and between the crowds, there were many people and very dense people, so they only saw swords waving. In fact, people are very slow to swing their weapons, and they are all slashing hard! It was in vain if the force was too small, both sides were holding shields, and the Great Sage Army was also wearing heavy armor.

"Bang!" A party man shouted and slammed the wooden shield into the shield of the Great Sage Army, and with the momentum of the momentum, the soldier fell back half a step and stuck to the horse. The dang man immediately picked up the mace and swung it down, and with the first "clang", it smashed on the shoulder armor, smashing the soldier screaming, and the shield also fell, but he immediately picked up the iron sword and stabbed it at the gap of the dang xiang's wooden shield, and immediately blood splashed his face.

A great sage soldier next to him was stabbed into the breastplate with a knife, screaming loudly and in pain.

In front of the Great Sage Army, the queue was turbulent, the sound of killing shook the sky, and the sparks of iron impact shone like Venus in the yellow dust. The contact area of the battle was very limited, but the divine arm on the hillside fired at the approaching party infantry, killing and wounding a lot. The most terrible place to fight ahead, but the most casualties are the deep shooting and killing of bows and arrows.

The heavy infantry in front fought bloodily, with crazy enemy soldiers in front and dense ranks of their own families behind, and there was no way forward and backward, so they could only fight desperately!

The military general shouted not far away: "Whoever takes a step back, slash!" ”

The military band played a rousing tune with horizontal drums and trumpets, and the scribes of the herald system of 100 people were also loudly encouraging their morale, the generals were shouting and scolding, and the scribes were praising the soldiers with all kinds of noble words...... But none of this can eliminate the bloodshed, pain, and fear of the soldiers.

The people on the hillside are one after another, screaming and shouting to kill, which is louder than the sound of drumming.

People gasped for breath in their mouths, sweated in the cold air, and spat white vapor. Elite soldiers are first and foremost strong men, because it takes no physical strength to fight to the death! Wearing dozens of pounds of armor, the power of the foot bow is often a stone, and it will be powerful to pull it a few times.

When a soldier heard the shout of "ready", he drew his bow and arrows, took a deep breath and gritted his teeth. At this moment, he saw an infantry brother in front of him slashing at an enemy soldier next to him, and another enemy soldier in front of him picked up his spear and rushed towards him with all his might. In an instant, the archer didn't think much about it, immediately turned his bow and arrow, and shot it close with a "snap".

The infantry of the Great Saint Army found that an arrow was suddenly inserted in the forehead of the enemy soldier in front of him, and he was afraid for a while, and looked back, but at this time, the string of "pop and ......pop" in the queue of the divine arm hand sounded, and a large group of people were shooting arrows.

…… The square banner of the Chinese army has the word "Great Sage" written on it, hunting and flying in the wind. Lu Fei and his subordinates stood motionless, watching the yellow dust and bloody rain in front of them. The soldiers stood there without going into battle, but their bodies were tense and staring.

Not far away, the drummer kicked his figure-eight feet, holding the drum tightly, looking like he was ready to kill. The shouts on the hillside resounded, creating a "buzzing ......" noise. From time to time, there was a loud shouting not far away, during which the voice of "Deling" was short and powerful, and the tension was abnormal.

At this time, one of the generals turned his head, wanted to speak and stopped, and finally did not say anything.

Lu Fei had already seen with his own eyes that the second batch of enemy infantry was moving forward in formation, and this time there were more people, maybe tens of thousands! And the fight ahead!

In this situation, the enemy soldiers will put in new forces and replace the first batch of men!

Wheel tactics.

The enemy troops on the battlefield with messy armor and weapons are like savages, but they are obviously not real primitives, and their tactics cannot be underestimated. The northwest side has been fighting for thousands of years, and there are "military advisers" in the coalition army, none of whom are good at stubble, and Liao is a real power, once more influential than the Central Plains, and many distant countries in the north regard Da Liao as "China".

Lu Fei looked at the signs of order in the chaos on the battle array, and finally spoke: "Order, use siege iron cannons to assist the frontline infantry troops!" ”

"Order!"

After a while, Pan Mei picked up the seal, stamped it on a piece of paper, and handed it to a scribe. Soon the scribe hurried out with two heralds with yellow pennants on their backs.

The siege mortar with a huge muzzle and a thick and short barrel on the gun carriage was half buried in the earth. A military general took the military order and looked at it, handed it to the military staff on the side, immediately drew his sword, and shouted: "The emperor's holy decree, the artillery battalion fights!" Order the iron artillery teams to prepare to fire! ”

In the midst of the shouting, the soldiers simply tore out the straw paper that was blocked in the muzzle of the cannon, which had already been filled with gunpowder and stone bullets.

The muzzles of the two dozen black holes were pointed diagonally towards the sky. A gong was heard on the ground, and a shout came: "Release!" ”

"Boom! Rumble! Boom ......" thunderous rumors sounded one after another, and the earth trembled.

On the gentle slope, I saw white smoke rising in rows, and the flames in the smoke were brilliant. The momentum was huge, but the stone projectile did not fly fast, and it was huge, and it flew into the air with a visible appearance, and fell into the crowd of coalition forces with its weight.

Nearly 100 catties of stones fell from mid-air, and below was a densely formed coalition infantry battalion, spread all over the place. The stone cannons could hit anyone at will, and only a few smashed into the open space between the phalanxes.

The entire battalion of iron artillery fired a volley into the dense crowd of enemy soldiers, and the enemy soldiers were killed and wounded dozens of people at once!

The stone bullets fell between the dry and hard loess sand and stones, and smashed the loess dust and splashed like the smoke of an explosion! Some hit people straight away, some cracked, and stones flew up, and one or two people who were unlucky around were injured.

However, the shelling really made the party soldiers panic and shocked, and they were hit hundreds of feet away, which the ordinary soldiers did not expect.

The scene was very terrifying, on the loess, a soldier was lying there on all sides, his head was broken, and his flesh and blood were splashed on the ground. In another place, the bloody liver and intestines are in a pool of blood. Some soldiers were screaming as they clutched their cheeks when they were hit by stones.

In the large phalanx where the party had just stepped forward, there was some chaos and disturbance everywhere, and the speed of progress was slow. People look up at the sky.

However, as soon as the artillery fire of the Great Sage Army rang out, it fell silent, and the iron cannon only carried a battalion of 500 people, and it was also troublesome to clean the gun chamber and reload it in one round.

This also worked, and the second group of enemy soldiers was stunned by the artillery fire for a while, disrupting the rhythm of the rotational attack. The front line of the Great Sage Army repelled the enemy soldiers in front of them and won a chance to breathe, and the heads and generals hurriedly commanded their men and horses to retreat in columns. The commanders of the second echelon on the upper side advanced in horizontal formations, with gaps between commands, allowing the columns in front to retreat.

Lu Fei still looked at the hill above the large cavalry on the opposite side, where people were standing. The two sides are far apart, but from a wide valley, which seems to be facing each other.

The sound of artillery stopped and stopped, but the sound of fighting did not stop for a moment.

The heavy infantry of the Third Army on the gentle slope to the east let out a shout, like a dam to hold back the onslaught of thousands of people. The mortar artillery could not stop the attack of the sea of people, and the two armies were screaming with the sound of killing, corpses were scattered all over the hillside, and the wounded soldiers were crying in the sky.

In the rear of the coalition army, more enemy soldiers were thrown into the front of the battle, and the front of the Great Sage Army did not retreat. The staff of the former battalion military government shouted in the army: "The foundation of the dynasty is built because of the blood of the son!" ”

The spring breeze crossed the ravine and swept through the boiling battlefield, carrying the smell of blood and the shouts of the people in the wind. Lu Fei's heart was tense, and the palms of the hands holding the hilt of the sword were covered with sweat, and the damp touch was reminiscent of blood on his hands. He couldn't help but blurt out: "The great cause of the empire does not only rely on weapons, the spirit of the Han family will last forever!" ”

Pan Mei and Yang Yanzhao were both beside him, Yang Yanzhao heard this, and bowed: "It's all because the soldiers are loyal to the emperor's heart, and the sun and the moon can be seen." ”

At this moment, the enemy cavalry in the distance finally moved! Large herds of horses slowly surged from the hillsides and valleys towards the north of the Great Sage's camp.

To the north, the right flank of the Great Sage Dynasty Army. At this time, the elite cavalry of the First Army of the Great Sage Army was deployed in the rear west of the infantry formation, and the movement of the allied cavalry was to prepare to attack on the flanks and assist the frontal infantry...... The two armies are stalemate, and the conventional way to break the stalemate on the battle front is to invest new forces!

The smoke of gunpowder dispersed in the mountains, and the rumbling sound of the horses in the north stepped on the yellow dust, as if it was about to sweep the entire mountain and river. The party infantry attack in the east became more violent, and the number of troops increased one after another.

The sun had just risen in mid-air, and half a day had not yet passed, but the battle had already been played out, and it was time for the fish to die and the net to be broken.

…… On the gently undulating hillside in the distance, the black-pressed horizon is undulating, and that's a herd of horses! The sound of "rumbling ......" seemed to come from all directions, and it was like the sound of magma surging in a large area under the ground.

The cavalry group poured to a mile away, and the troops were divided into two routes, all the way to the right flank of the Great Saint Army's great array, and all the way to the direction of the rear wing of the Great Saint Army to deploy cavalry. Patches of cavalry were still jogging, and their speed had noticeably begun to pick up.

At this time, the sonorous sound of a pipa sounded abruptly in the sound of horses' hooves and the noise of the crowd, faintly audible. Then many lute lute was played in unison, and drums and horizontal blows were added to make the song louder.

The melody of the pipa makes this battlefield, full of screams, pain, and yellow dust, seem to have a little more color.

The sonorous song, with a bit of pathos, spread between the galloping horses and the mountains full of swords and guns.

In the familiar sound of the pipa, the soldiers on the large array pulled out the thatch one after another, and a five-foot-long copper cannon revealed a hideous face! The sound of the cannon glowed in the sunlight with a dim metallic glow.

"Huh!" The general in command of the 1,500-strong artillery corps drew his sword with an excited expression on his face. The gong players on the side grabbed the handle of the rod and stared at it.