The first battle of Hanzhong, Cao Jun in Zhang Xiu's Chang'an battalion when the road under the village has had a hard battle, and then Ma Chao's Sizhou battalion also gave a certain blow to the enemy, and then after the battle of Liumayuan, Yinxian attacked the Yan army resistance can be described as tenacious, but although there are losses, but Cao Cao's use of the advantage of troops is just right, even Zhang Hu can only delay it and can not carry out too effective counterattack, the loss of Micang Mountain makes the battle situation take a sharp turn, for a time Cao Jun's prestige is shocked, it seems that the Yan army in Hanzhong will face a collapse at any time! But although Zhang Liao's Yanyun army failed to arrive in Yin County in time, the elite of the Yan army joined the battlefield to the stability of the battle situation also played a pivotal role, Zhang Wenyuan in the Yan army is known as a good defender, this first day of the attack on Hanzhong His talent is undoubtedly revealed, relying on the strong city and the sophisticated equipment of the Yan army, no one in the Cao army can wait for the city tower for a whole day, which is unique in Cao Cao's many years of military career.

Although the first day of attacking Cao Jun will not go all out, it is indeed more intuitive to observe the opponent's city to judge the strength and weakness of its defense than the map sand table, but some actual military information must be verified through actual combat, and people like Cao Cao Gaoshun who are good at attacking cities often have to test first! But even so, the strength of the Yan Yun army, Zhang Liao's coordination of troops, and the power of the equipment battalion on the top of the city tower all made Cao Cao and his subordinates awe-inspiring.

The city wall of Hanzhong is six zhang high, compared to the Xiongguan Tiger Prison is only a little shorter, the degree of solidity is probably not under it, Zhang Lu has spent half of his efforts for more than ten years on this city, Hanzhong is a rich place again, the people's hearts are attached, which is extremely beneficial to the construction of the city and the strengthening of the city defense! The construction of a strong city requires not only a strong army, but also a high dependence on economic strength. For example, today's Han capital Beiping, under Liu Yi's continuous expansion, the city wall stretches up to 100 miles, eight zhang high, three zhang thick, all of which are hard mountain stone accumulation, with the continuous development of the instrument, the last section of the city wall even used the "concrete" pouring method of this era, the end is extremely solid, of course, in terms of the general trend of the world at this time, the indestructibility of Beiping is more of a manifestation of the national strength of the Han Dynasty, and the king of Yan is not willing to do the battle of defending the city here!

The height of six zhang is like Cao Cao's figure, and it can only be reached by ten people, and the power of attacking hard crossbows and rolling wood and stones is multiplied from the top to the bottom. And with this height difference, the scattering power of the Bombardment Cannon of the Instrument Battalion is even more amazing! In addition to Zhang Xiu's first station to meet the enemy in the village, Zicai is extremely concerned about the protection of the equipment battalion in the war, his first soldier is to win, first calculate, has a deep understanding of the power of the military equipment, siege and defense of the city will be the place where this special army has the greatest room to play, once the Yan army is unfavorable to retreat to Hanzhong City, the equipment battalion is his killer weapon to kill and injure the Cao soldiers!

At that time, Zhang Xiu went to Jiameng Pass with only half of the soldiers brought by the Chang'an battalion, and only half of the equipment battalion accompanied the army, and some large instruments were not carried because of the road and marching reasons, even so, the appearance of the Mofang crossbow still made both the enemy and me impressed, in a few days of guarding the battle, Cheng Yilong led the Chang'an battalion equipment battalion has made great achievements, and now there are strong city walls as a basis, far better than the walled city, and the large bombardment cannon joined the battlefield and the equipment battalion of the two armies of Chang'an and Yanyun fought side by side, The role they play on the battlefield during the day can be imagined.

In the face of the offensive of the Han and Zhang coalition forces in the subordinate place, Liu Yi wanted to annihilate it, so he showed the enemy weakness, and tried his best to limit the power of the equipment battalion in the battle to defend the city, but it was enough to make the coalition soldiers have a sense of changing color! Since he can't take the initiative to attack, he will give the enemy a huge kill and deterrence when he is on guard, how can the equipment battalion have a reason to stay? Under Zhang Liao's reasonable arrangement and deployment, the overwhelming flying stones that came from the sky during the fierce battle during the day were never seen even by the experienced soldiers of Cao, and the momentum of the first charge completely collapsed.

The giant bombardment cannon carefully improved by the equipment has two firing methods, one is direct shooting, which throws more than 100 catties of boulders out of the target, both the range and accuracy have been greatly improved compared with the past, and the special shooters of the equipment battalion in weekday training can almost do it within 200 paces without missing a shot! The second is scattering, the stones ranging from a few catties to more than a dozen catties are ejected out in the way of rain and rain, its advantage is that the striking area is wide, and the distance has been strengthened to the greatest extent, but the power is naturally reduced compared to the direct shot, which can be said to have their own merits.

However, at this time, the sky-bombing cannon was erected on the head of the Hanzhong city as high as six zhang, even if the gravel carried the momentum of the volley down when scattered, the weight and momentum were not the same as those of the flat launch, even the lightest stones were fatal to the Cao soldiers in the impact, and with the thickness of the shield configured by the Cao army at this time, it was impossible to stop the flying stones from these city heads! This is just one of them, in order to attack Hanzhong City, Cao Jun also put a lot of effort into the preparation of equipment, there are a large number of well-railing rushing cars and other things, these are enough sharp weapons to rely on in the attack, but they are so fragile under the direct attack of the giant sky-bombarding cannon of the Yan army equipment battalion, and at the end of the day, the well-bar Cao army alone lost more than ten planes, most of which were damaged by the boulder directly shot out of the sky-bombardment cannon between one hundred and fifty steps to one hundred steps, which was a hundred-pound stone, plus that momentum, No matter how strong it is, it's hard to bear!

It can also be seen here that Zhang Liao's mastery in command, although the Yan army's special shooter who controls the sky cannon can hit two hundred steps away, but the closer the distance, the degree of accuracy will be improved, of course, the enemy can not be put too close, and all projectile weapons, the Yan army's sky cannon also has a dead angle of attack, once the Cao army can impact within fifty steps, it will not be able to make an effective blow to it, but it is really at such a close distance, the bow and arrow and the rolling wood are enough. Zhang Liao's approach was to put the enemy's siege equipment closer and then fight, and even played some small tricks with this, at the beginning the equipment battalion did not raise the accuracy to the extreme, but waited for more wells to rush into the precision strike range before giving the biggest blow!

Directly shot at the siege equipment of the Cao army, scattered against the soldiers who hit the city, there was a bombardment artillery fire blockade in the distance, and there were thousands of arrows from a group of archers in the near future, such a three-dimensional defense with the exquisite Cao Cao who watched the battle behind the formation was all dignified, in the place where the equipment was created more than ten years ago, when the first failed bombardment cannon even accidentally injured the soldiers, who would have thought that in just ten years, these "strange skills" in the eyes of the world could exert such great power in Liu Yi's hands, It is also thanks to Cao Cao and everyone under his command that they are all scheming people, and if they change their psychological endurance, they are afraid that just watching the grand battle situation is enough to make them feel frightened and lose confidence.

When the princes discussed Dong, the attack on the two Xiongguan of the Bishui Tiger Prison was mainly Cao Cao, supplemented by Liu Yi, and the memory of the battle method of the great enemy attacking the city was very profound, and he had repeatedly stated its subtleties in front of the generals, and now Zhang Liao as the defending party also learned a lot of experience from it, the position of the bombardment cannon and the arrangement of the archers to carry the soldiers are faintly aimed at the various tactics that the other party may take, and the killing and wounding of the enemy soldiers in the first battle is of course critical, But the more important thing is to establish an impression in the other party's heart that the city is difficult to attack!

The Cao army's repeated attacks suffered heavy losses in front of the three-dimensional defense of the Yan defenders, but their offensive did not weaken because of this, but they kept changing the formation of the impact and grasping the timing! In Cao Cao's view, Zhang Liao's method of defending the palace is undoubtedly relatively novel, and it is not enough to find out its weaknesses and crack it by careful observation, and it is necessary to verify the countermeasures he came up with through many attempts, and the price to be paid in this process is the lives of thousands of soldiers.

As the general of the unified army, he must not only command on the battlefield, but also figure out the psychology and intentions of the other general's at any time, the two are very far apart from each other, and there is only a general outline between them, and it is almost impossible to observe the words and colors, the reason why it is almost because the generals of the Yan army can still make this impossible possible within a range of two miles, which has to say that another initiative of the equipment battalion, the clairvoyant mirror! Of course, even with the help of this thing, it is not easy to see the clues in Cao Cao's face, but his strategic intentions and ideas will be reflected on the battlefield through the performance of his soldiers, Zhang Liao will never let go of such details, from the changes in the number of soldiers and the change of formation in the opponent's attack, he already knows that the enemy is testing.

As with all powerful weapons, the logistical requirements of the Giant Sky Cannon are also directly proportional to its lethality, and the number of stones required for each scatter is generally between twelve and fifteen, and preferably those stones can be polished basically! This number is by no means a mouthful, but the valuable experience summed up by the equipment battalion in countless actual exercises, less power is insufficient, more will affect the accuracy and timing of launching, in the weekday drills, the requirements of King Yan is to be perfect, and these equipment battalion soldiers have also invested their greatest dedication.

On the north gate of Hanzhong City is ten miles wide on the city tower, Zhang Liao placed a bombardment cannon every twenty-five steps, the overall number reached as many as 100, the requirements for stones are a terrifying number, the offensive and defensive battle both sides know that it is not the work of time, although the early stage is after a long period of storage Hanzhong City hoarded countless stones needed for the bombardment cannon, and even there are two huge city squares already have two gravel mountains, but when it should be saved, Wenyuan will never waste, remember that the king of Yan once said with a smile, Fighting a war is the same as doing business, when you have to settle accounts, but also calculate detailed accounts, you must be extremely cautious and rational use of the capital in your hands, and the people will inevitably laugh out loud when they hear it, but after thinking about it, it is extremely reasonable, in the defense of the city, she will be more critical, to exchange the minimum price for the maximum gain!

Once the Cao army put into the impact of the force has decreased, Zhang Liao will order to stop the firing of part of the bombardment cannon, and one of the soldiers who operate this thing is specially calculated the number of stones consumed, and after the war, the general will have a good idea of the consumption of materials according to the intensity of the battle, and these numbers will also be recorded by the secretary, and will also become an important reference for the generals to command the battle in the future battle!

When the sun set, Cao Cao ordered the troops to be collected, and the Cao army had also set up a ladder to carry out a substantial attack on the city, but this progress could not make Meng De's face soothe in any way, he knew that Zhang Wenyuan was using this to let the soldiers defending the city quickly adapt to the atmosphere of the battlefield, the advantages of the Yan army's equipment are amazing, but the good general in front of him will make him pay more attention, why can't such a talent be used by Cao? It's a pity!