As long as the emperor does not want the result, this also gives the generals a great deal of autonomy and can freely mobilize their armies. Zhao Yong, who was attacked by the Jin army's stone-throwing carts, immediately realized that this would pose a threat to the besieging troops, and decided to defeat the enemy's artillery first, so an artillery battle began the siege.

With the expansion of the military workshop and the improvement of the technology, the artillery power of the Song army's equipment has also increased compared with a few years ago, and the caliber and power have increased. The rapid-fire cannon has a maximum range of 600 paces and can fire 10 catties of solid and flowering shells. The caliber of the mortar cannon reached one foot and two inches, and it could throw a solid projectile of 30 catties to 500 paces with a charge of eight catties. All of these newly developed artillery pieces were reequipped with artillery brigades directly under their control, and all of them also participated in the battle this time.

The Second Artillery Brigade attached to Zhao Yong's department lacked a heavy artillery battalion, but the newly established siege artillery battalion was strengthened, and the artillery battalions directly under the generals and the brigade machine gun team had a total of more than 100 large and small artillery pieces. In order to give full play to the power of artillery, Zhao Yong set up an artillery headquarters headed by Tian Bin, commander of the Second Artillery Brigade, to unify the command of the artillery under the Northern Route Army.

Since Zhao Ta brought artillery, a cross-era killing weapon, to this era, it has played a huge role in the southern and northern wars with his army, and it can be said that he has not encountered an opponent. As one of the earliest veterans in the army, Tian Bin knew that the purpose of the establishment of artillery was to suppress the target, and the other was to destroy the enemy's long-range weapons, and the stone thrower was one of their targets. It's just that the opportunity is rare, and the battle with the 'whirlwind cannon' of Western Xia has become the only rare experience they have in fighting the treultenucian.

Now that he suddenly heard that the Jin army was equipped with a long-range weapon such as a trebuchet, Tian Bin did not underestimate the enemy because of the success of the past, and he calculated that it was not the small trebuchet with a range of only 100 paces placed at the head of the city according to the location and position of the commander who was attacked. Rather, it is a heavier stone throwing machine with a longer range and greater power. This type of stone cannon is large and bulky and difficult to move, so it can only be placed in the city. However, the tall walls obscured their position, and how to find the target became the first difficulty...

When Zhao Yong took Danfeng Gate as the attack point, the various departments began to prepare for the siege of the city, and the foothills, Fengyuan, and moats arranged in front of the city, the battle sheds and enemy towers on the head of the city must be destroyed before the general attack, and the artillery became the main force to carry out the destruction. Since the time limit given by the emperor to break the city was only three days, and there was no time to do detailed reconnaissance, Tian Bin decided to find and destroy the Jin army's stone thrower while covering the troops to break the barrier.

After lunch, the Song army marched in front of the city. Zhao Yong also saved the process of scolding, at this time, even if the eighteen generations of Aguda's ancestors were scolded, I am afraid that Zongfu will not go out of the city if he is afraid. The artillerymen spoke first, rapid-fire guns and mortars were staggered, the targets of rapid-fire guns were Fengyuan and Lujiao in front of the city, and the targets of mortars were the battle sheds and enemy towers and long-range weapons on the head of the city.

Tian Bin was very cautious, and the artillery that went out was arranged 200 paces in front of the city, which was beyond the maximum range of bows and arrows and small stone throwers at the head of the city, and the distance between the gun positions was widened. In case of a blow from a heavy stone thrower in the city, it can reduce losses and quickly retreat. However, he placed the mortar battalion of the artillery brigade behind the gate flag, specifically to deal with the stone cannons placed by the enemy army in the city.

"Boom, boom..."The two siege guns fired first, and two iron bullets with big heads whistled out, heading straight for the Danfeng Gate Tower. Under the watchful eye of thousands of people. A cannonball smashed on the city wall, and the battlements of large blue bricks were smashed in an instant, revealing a gap eight feet long. a puff of dust and smoke; Another cannonball swept through the walls and into the towers, destroying all the doors and windows in its path. Fortunately, it did not hit the pillars of the building and passed through the hall. I don't know which unlucky guy the road fell on. The city tower that was hit by a cannon was like a lit honeycomb, the soldiers of the Jin army hiding inside swarmed out, and the people on the head of the city were also hiding everywhere, although the losses caused by these two shells were not large, but the psychological shock to the Jin army was difficult to describe.

For a time, the front of the city and the head of the city were filled with smoke and dust, the war tent was flying, the female wall collapsed, the platform swayed, and the observation tower protruding from the city wall fell under the city. The Feng Yuan, which was built of rammed earth in front of the city, was no more than three feet thick, and it was pierced and collapsed by cannonballs, and the soldiers hiding behind held their heads and did not look back without a fight.

But the good times didn't last long, and the Jin army began to counterattack. To say that the history of using stone-throwing machines is not long, they captured hundreds of stone-throwing machines abandoned by the Song army outside the city when they went south to Bianjing, and soon found that their power was huge, so they attacked Bianjing. After that, he kept this army, and used the captured craftsmen to build a large number of stone throwers, and trained them to deal with the artillery of the Song army, and today they can finally show their skills.

Although they had already been warned, they were still a little careless, they didn't expect the Jin army's stone-throwing machine to hit so far, and the artillery positions they set up two hundred paces away from the city were all covered by it.

"Determine the position of the enemy's artillery and order the front team to retreat two hundred paces!" Tian Bin saw that the Jin army began to counterattack, and hurriedly gave an order.

Hearing the sound of the retreat, the artillery who came out of the front still fired another round of shells before they began to retreat, they were really holding their breath in their hearts, since the artillery became an army, it can be said that they are invincible all over the world, in the past, only their own share of beating others, where can anyone touch them. Seeing the Song artillery retreating in embarrassment, the Jin army on the head of the city was thunderous with joy, and the stone thrower also kept firing, chasing the retreating Song army and beating the buttocks.

Fortunately, although the stone thrower hit far, the accuracy was poor, the rate of fire was slow, and the Song army's artillery positions were far apart, so it did not cause much loss, but there were also several guns that were smashed by falling boulders and collapsed the gun carriage, more than a dozen horses were killed and injured, and the artillery also suffered casualties for the first time!

"Rapid-fire guns are aimed at the observation towers in the city!" Tian Bin saw that the falling stones were smashed more accurately than one by one, and the stone thrower was launched behind the city, it was impossible to observe the situation outside the city, there must be an observation post to indicate the target for the stone thrower, so his eyes immediately turned to the observation tower standing high on the city wall, and if there was a flag waving, he immediately ordered the rapid-fire artillery battalion of the artillery brigade on standby.

"Target, the observation tower in the city, solid bullets, shoot from east to west!" The rapid-fire artillery battalion that received the order immediately went into action, and after the test firing of the first gun, adjusted the firing of Zhu Yuan, and every two guns aimed at an observation building and began to shoot, with the rumbling sound of the cannons, the observation buildings fell one after another, and the accuracy of the stone throwers became worse, and the artillery that went out took the opportunity to retreat to the main team.

"Report to the system, determine the position of the stone thrower, fifty steps behind the city!" Otherwise, knowledge is the strength of the force, Zhao Ta selected literate soldiers as artillery, and taught them the trigonometric functions of the previous life, so as to use the measurement of hidden targets, and now they are used, although there are no artillery mirrors and rangefinders at this time, but the approximate location of the target can also be calculated.

"Mortar battalion shoots inside the city and destroys the enemy trebuchet!" Looking at the withdrawn artillerymen, Tian Bin was also unhappy, gritted his teeth and ordered.

"Target, fifty paces behind the city, enemy trebuchet position, incendiary bombs, flowering bombs are fired alternately!" The mortar battalion also received the order to fire, immediately adjusted the angle of the gun body, adjusted the charge, and began firing. The commander of the mortar battalion is very experienced, since it is a general direction, it is possible to smash the catapult with solid bullets only by firing intensively, and the speed is much slower, and since the catapult is wooden, it can definitely be lit, and the fuel in the incendiary bomb splashes everywhere after it lands, and it cannot be taken down if it is stained.

With the order, clay pots filled with oil were first thrown into the city, and then a round of flowering shells fell into the city, which ignited the fuel in the incendiary bombs and killed and injured enemy soldiers operating the cannons. Sure enough, after the loud explosion, you could see the flames rising from outside the city, and you could hear the screams of the people inside...

There are many commanding heights in Yanjing City, not only the observation tower on the head of the city, the corner tower on the corner of the city, the platform and the pagoda in the city are much higher than the city wall, and the Jin army has also set up observation posts on it, and some of them are beyond the range of the Song army's artillery. They immediately took advantage of these vantage points to regain command of the catapults, and found that there were still Song artillery positions farther outside the city.

Of course, the Song army was not to be outdone, and the sappers soon erected a tall watchtower, on which the artillery observation post directly commanded the artillery to shoot with the flag, and the accuracy was also improved a lot. Over time, the advantages of artillery gradually became apparent, they were fast, powerful, moved quickly, and fired accurately. Although the stone cannon is with the help of simple machinery, it is difficult to move in size, and it also needs manpower to pull the lever to launch, which has a great chance of using the same force every time it is cast, and it is difficult to ensure accuracy after a long time.

When the battle reached Shen, the Jin army's stone throwers were constantly destroyed, and the firepower became weaker and weaker, but the Song army's artillery was still firing, and the position was constantly moving forward, and the small-caliber artillery that retreated to the main formation also joined the battle group again, destroying the fortifications outside the city. When night fell, the Jin army's stone thrower had no power to fight back, and there was a fire inside and outside the northern city, and even the Taiping Hall and Qingliang Hall in the palace city were also lit up with a raging fire, illuminating the night sky, but the artillery of the Song army was still roaring... (To be continued......)