In the battle just now, the Thunderbolt Army, which is known as invincible, was defeated, which made the Iron Man Army quite complacent. They had already rested, and when they saw that the Thunderbolt army on the official road had stopped, they were afraid of the other side, so they lined up and came in the direction of the Thunderbolt army. Seeing this, Yang Wen'an, who was in command in the rear, urgently ordered Mingjin to withdraw his troops. I don't know if it was because the shouts and explosions for the fortress were too loud, or the general who commanded the Iron Man Army deliberately ignored it, and actually led his men to rush forward. This general thinks that there are more than 160 people in his Iron Man Army, and there are more than 100 sword and shield men, crossbowmen, and spearmen who cooperate with him, which is enough for a battle. In a few moments, the three hundred men rushed half a mile in front of the Thunderbolt formation. Seeing this, Yang Wenan secretly said in his heart that it was not good, but he had no choice but to let them go. If the slow-moving Iron Man Army turns around and retreats at this time, it will leave its back to the Thunderbolts, which is definitely a taboo for soldiers.

The Iron Man Army marched with heavy steps, the cold and shining spears stretched diagonally in front of them, and the queue was like a wall, looking both powerful and full of oppression from a distance, which made the soldiers of the Iron Man Army have the illusion of their invincibility in a trance. It's just that this illusion is like a colorful soap bubble, smashed by a screaming cannonball. Under Zhou Jianshen's order, more than 40 light artillery pieces of the First Brigade opened fire one after another, plowing out a flesh alley in the Iron Man Army's array. After learning the news that the new annexed army in front was heavily armoured, Zhou Jianshen ordered all the artillery to be loaded with solid shells. Although the solid shells of these light field guns are only about two catties, they can destroy civil fortifications within a distance of half a mile. Although the iron armor is the pinnacle of cold weapon individual defense equipment, it can't stop these scorching shells, and even if they are not penetrated, the internal organs and bones will be eroded and shattered by the huge impact force.

This round of artillery reimbursed a third of the Iron Man Army in a neat line, and the light infantry that followed it also suffered heavy casualties. The tragic situation of being hit by a cannonball made the soldiers of the new annex lose their hearts and turn around and run. The light infantry ran fast, but the Iron Man Army, which was heavily armored and nearly 100 pounds in weight, could not even turn around. The second round of shells flew, and the Iron Man soldiers lost half of them, and the light infantry only lost more than a dozen people, not because the light infantry ran fast, but because the Thunderbolt artillery was aimed at the Iron Man Army. After the third round of artillery, only a dozen men remained of the Iron Man, and the light infantry had fled to the bank of the river near the fortress, bringing back the feeling of defeat. At this time, the battle for the fortress was still in full swing, and the new annexes, although numerous, were unable to deploy their forces due to the narrow passage of attack. Although the defenders of the fortress numbered only about twenty men, they repelled more than a dozen enemy attacks with grenades and muskets.

Zhou Jianshen left some soldiers to clean up the mess and assist in transporting artillery, while he personally led the team to rush towards the fortress. When the soldiers of the Thunderbolt Army of the fortress saw the arrival of reinforcements, their momentum suddenly increased, and a wave of combat power erupted, driving back the new annex army that was attacking the fort. On the other hand, the soldiers of the new annex army could not attack for a long time, and when they saw the reinforcements of the Thunderbolt army approaching, they immediately became a mess, and some people even secretly jumped off the river bank and began to flee back. Yang Wen'an, who was commanding on the shore, saw that there were more and more deserters, and then looked at the reinforcements of the Thunderbolt Army rushing over from the black pressure on the opposite side, so he had to sigh and order the withdrawal of the army. The 1,000 new annexed troops he led across the river were now only more than 600 people, and their number was no longer as good as the Thunderbolt reinforcements that rushed over. What's more, the current new annex army has long been blown up by firearms and has lost all will and morale, especially the collapse of the Iron Man Army has destroyed the confidence of the soldiers of the new annexed army. After all, even those invulnerable iron cans died under the artillery, how could their own flesh and blood resist?

After leaving 200 people to guard the riverbank, Yang Wenan retreated with his people. At present, a pontoon bridge about three meters wide has been erected on the river, and the traffic capacity has been greatly enhanced. It's just that at this moment, there is chaos on the pontoon bridge, except for the defeated soldiers who are eager to flee back to the east bank of the river, there are still soldiers coming down from the east bank. What's even worse is that at this moment, there are still many people on the pontoon bridge who are carrying siege weapons and are about to go to the fortress, blocking the already narrow pontoon bridge tightly. It turned out that just before the arrival of the Perak reinforcements, Yang Wen'an had ordered the new annexed army on the east bank of the river to quickly transport the siege weapons through the newly built pontoon bridge. In his opinion, the new annex had an overwhelming advantage over the defenders of the fortress, and the small fortress could be taken at the snap of a finger as soon as the siege weapons crossed the river.

After the Iron Man Army easily defeated the 200 reinforcements that came from the Thunderbolt Army, Yang Wenan thought that the Thunderbolt Army was nothing more than that, and it could only be deflated in front of his powerful hoplites. Even if the Thunderbolts are outnumbered, the Iron Man can hold them down and take the fort themselves. After taking the fortress, his men and horses only need to firmly hold this bridgehead, and a steady stream of Mongolian troops can continue to cross the Mianshui, and then shake the entire defense system of the Perak army. At that time, the Mongol cavalry of Kudu will show their skills and break into the interior of the western Sichuan Plain to turn the world upside down. At that time, he thought that he had won the ticket, so he sent fast horses to inform the Mongolian cavalry who were looking for a breakthrough downstream to return quickly.

When the new annex army began to attack the fortress, Yang Wen'an also asked Kudu to send cavalry to cross the river together to defeat the cavalry company of the Perak army, but he was refused. Kudu clearly replied to Yang Wen'an that the prerequisite for the Mongol cavalry to cross the river was that the new annexed army would take the fortress and establish a bridgehead. On the one hand, it is that Kudu has suffered a big loss from artillery, and there are still lingering palpitations in his heart. It was absolutely impossible for his cavalry to wade across the river under artillery fire, and it was the new annex to be used as cannon fodder and consume the ammunition of the Thunderbolt Army. On the other hand, Kudu did not have confidence in whether Yang Wen'an could establish a bridgehead on the other side of the river. Although he believed that he could take the small fortress in front of him, it was doubtful that he would be able to hold it in the face of the Thunderbolt counterattack, after all, the Thunderbolt artillery salvo was a landslide. Without a solid bridgehead and a steady stream of backup, even if he led his cavalry across the river, he would not be able to take advantage of the strong cities and fortresses of the Thunderbolt army. What's even more terrifying is that once the rear road is cut off, the cavalry led by him will be in danger. In fact, if you dare to lead the cavalry to break in recklessly, you will end up being beaten by the Thunderbolt army.

The Iron Man Army, which showed great courage a quarter of an hour ago, was wiped out in an instant, which made Yang Wenan feel sad and terrified. Although he had heard of the power of the Thunderbolt weapons before, he also thought that it was just an exaggeration by losers such as Kudu and Liu Heima. Because if the Thunderbolt army is not powerful, it will seem that it is incompetent by itself. The Song armies in central Sichuan and eastern Sichuan also used firearms such as earth-shaking thunder, and although the firearms they made were sharp, they could only be assisted by cold weapons, far from the point of singing the leading role. The Iron Man Army defeated 200 firearm-wielding Thunderbolts in one fell swoop, proving this. Based on this inertia of thinking, Yang Wen'an gave advance orders before the reinforcements led by Zhou Jianshen entered the battlefield. At that moment, he suddenly gave the order to retreat, and the battlefield environment was chaotic and noisy, coupled with the poor transmission of information, chaos was inevitable.