There are a total of 5 fortresses in the Japanese army's Shoushan position, two large and three small, all of which are made of concrete, masonry, the thickest part of the front can reach 1000 mm, and the top is also 300-400 mm, the large fortress can accommodate 6 artillery pieces and 10 machine guns, and the small fortress can accommodate 2-4 artillery pieces and 4-6 machine guns, which can be said to be quite strong. And on the periphery of each fort there were a large number of trenches, supplemented by foxholes, and there were Japanese artillery positions in the rear.

This was the first time since the East China Government entered the war that the People's Army attacked the Japanese positions without the fire support of heavy artillery. Of course, Jin Suidong, the commander of the 4th Army, also knew that such a position could not be stormed, so he first concentrated his 155-mm artillery and launched a fire attack on the Japanese fortress.

However, the power of the 155 mm artillery in the face of this kind of concrete and brick fortress is indeed limited, whether it is the 155 mm 25 diameter * gun equipped by the 4th Army or the 155 mm 40 diameter towed field gun temporarily assigned to the 4th Army, bombarding the fortress, it can only smash a small amount of cement stones, leaving a table-sized crater, and the damage to the fortress is extremely limited. After more than 1 hour of bombardment, 5 fortresses were hit hard. However, the other artillery inflicted a relatively heavy blow on the Japanese position.

Now the 200-mm self-propelled artillery was bombarding Liaoyang City, and it was impossible to rush to support the 4th Army, so Jin Suidong decided to use tunnel blasting tactics to deal with these forts. To put it simply, it is to send * from the ground to the edge of the fortress, or dig a tunnel to the bottom of the fortress, and then bury a large number of * to ignite the explosion, which is also the most common tactic to deal with a strong fortress in the absence of heavy artillery, in the old time and space, the ancestors of the traverser should be proficient in such tactics.

But the danger of this tactic is also quite large, and it is needless to say that it is necessary to blast from the ground close to the fortress, not only to clear most of the enemy strongholds and positions outside the fortress first, but also to brave the fire in the fortress and rush to the front of the fortress with *, during which it is naturally necessary to take considerable risks.

The tactics of digging tunnels and blasting are much safer on the surface, but the actual danger is not much different from the ground attack, because the tunnels cannot be dug from their own positions, this is because in the battle, the positions of the two sides are at least hundreds of meters apart, if you start digging from your own positions, it will take until the year of the monkey to dig under the enemy's fortress, so you must dig within 100 meters of the enemy's fortress, or even a shorter distance to excavate. Moreover, tunnel blasting also involves complex tunnel technology and calculation, and the direction, direction, depth, and amount of buried medicine of the tunnel need to be accurately calculated.

In addition, whether it is ground blasting or tunnel blasting, not only is it a life and death for the personnel who carry out the blasting, but also other units are required to provide containment and fire cover for the enemy, so the entire unit also has to bear considerable casualties.

However, although the East China government has developed a lot of weapons that are ahead of the times, which has greatly improved the combat capability of the people's army and reduced the casualties of the people, it cannot guarantee that all battles will be easily won by relying on advanced weapons. And now at this time, it is necessary for the People's Army to work hard.

On the one hand, he sent engineers to select suitable locations on the battlefield and dig tunnels; on the other hand, he also stepped up his attack on the Japanese positions, so that if he could not attack the forts, he could always impress the positions outside the forts, and if most of the positions outside the forts were destroyed, the ground could be blasted.

Therefore, the KPA not only strengthened its striking firepower against the Japanese positions, but also launched a ground advance to the Japanese positions, and at the same time sent two engineering groups to choose two relatively hidden positions on the battlefield under the cover of other attacking units and began to dig tunnels.

The battle lasted all morning, and by about 12 noon, KPA sappers had successfully dug a tunnel and blasted a Japanese fort, finally successfully blowing up a small fort. However, the other tunnel was only half completed, and a considerable part of the Japanese positions were destroyed, but the Japanese still had some resistance. KPA also organized two ground assault demolitions, but neither demolition team could get close to the fort and were all killed halfway through. The People's Army also paid a great price for this, with more than 2,500 soldiers killed or wounded, and 11 engineers and 6 demolition soldiers were killed.

Jin Suidong estimated that if the battle continued like this, then at least tomorrow the Shoushan position would be fully occupied, and the number of casualties of the KPA would have to more than double. Fortunately, at this time, the 2nd Army had broken through the wall of Liaoyang City, and the two 200-mm self-propelled guns were finally empty, so the command immediately ordered the 2nd Army to immediately hand over the two 200-mm self-propelled guns to the 3rd Army.

After receiving the order from the command, Qiu Yahui did not hesitate, and immediately sent a battalion to escort two 200-mm self-propelled guns to the side of the 3rd Army to participate in the battle. First, the atmosphere within the People's Army is still very united, and even if there is competition between the generals and leading officers, they are all upright and bright, and they will establish meritorious deeds on the battlefield fairly, and they will not deliberately tear each other down and do not cooperate with each other; second, the walls of Liaoyang City have been blasted open, and the People's Army has also successfully broken into Liaoyang City, Qiu Yahui believes that the battle to attack Liaoyang City is already in sight, and these two 200-mm self-propelled guns really have no use in his own place, and of course, he cannot keep these two 200-mm self-propelled guns here, it is better to send them to the 3rd Army to let them play their own role。

Qiu Yahui also specially dispatched a battalion of troops to escort the two 200-mm self-propelled guns, which was also for the sake of prudence, because before the armored train guns crossed the Liao River, these two 200-mm self-propelled guns were the only heavy artillery pieces of the People's Army at present, and they were all counted on for the task of attacking fortified positions on the battlefield. And to some extent, these two 200-mm self-propelled guns are even more valuable than armored train guns, after all, armored train guns can be remanufactured after being beaten, and once these two 200-mm self-propelled guns have major damage, it is almost impossible to have new ones, because the carriers of the two 200-mm self-propelled guns are trucks that cross over.

Although the self-propelled guns were equipped with an infantry company, a cavalry platoon, and four machine guns were installed on the self-propelled guns, in addition to the personnel operating the guns, they were generally sufficient for self-protection. Moreover, the self-propelled gun itself also has a strong ability to move, the maximum speed can reach 30 kilometers per hour, and it can escape in case of dangerous situations. But now on the battlefield, although the two sides have relatively clear battle lines and positions, in some areas, there will still be some small units interspersed and staggered, and the road traffic situation is also extremely poor, self-propelled guns can only run at a speed of more than 10 kilometers, so they cannot be unguarded.

However, after the self-propelled artillery left the 2nd Army, the People's Army encountered serious obstacles to the progress of Liaoyang City, and the original People's Army thought that after breaking through the wall of Liaoyang City, it would already be victorious, and the Japanese army had no resistance at all, including Qiu Yahui, they all held a very optimistic attitude, believing that after entering the city, it would be just an easy clearance operation. Therefore, Qiu Yahui also ordered the 2nd Division and 1st Regiment to break into the city and smash the Japanese headquarters directly, striving to control Liaoyang City as soon as possible.

The Japanese army's will to resist greatly exceeded the expectations of the KPA. After the 1st Regiment broke into Liaoyang City, it divided its troops into three ways and went straight to the Japanese headquarters, but it was stubbornly sniped by the Japanese army, and the Japanese army made full use of the houses and buildings in the city, set up blocking positions, blocked the attack of the People's Army from the front, and arranged a large number of hidden piles, shooting dark spots, and striking at the People's Army, from the hidden alleys and small streets to the flank attack of the People's Army.

As a result, the three KPA suffered heavy losses, because it was impossible to use large-caliber artillery in the city, and before the attack, the KPA was too optimistic about the battle situation in the city, so the heavy fire weapons only brought 60 mortars, which were not only limited in power, but also shrunk when they were used, and the Japanese army could ignore the lives of the residents in the city, forcibly occupy the people's houses at will, and even in order to block the KP, they did not hesitate to blow up and burn down the houses, and even regardless of whether there were people in the houses, but the KPA could not care.

Under the ideological education of the East China government, the soldiers of the People's Army have completely shaken off the old concept of the feudal army ideologically, have the concept of a modern army, and protect their own people, which has become the belief of every soldier of the People's Army, so before opening the shelling, they must confirm that there is no one in the house, or there are not many people, and when they encounter Chinese fleeing on the street, they will usually carry out rescue, of course, in such a fierce war, it is impossible to completely avoid accidental injuries to the people, but the People's Army does its best to reduce the accidental injuries to a minimum limit, and try its best to save the people, and the People's Army has also killed many soldiers for this。

Moreover, it seems that in every corner of the city, bullets may fly out and shoot a few soldiers; in every alley, a group of Japanese soldiers may be killed, and the people's army will start a white-knuckle battle, and the fighting spirit of the Japanese army is extremely tenacious, and many Japanese soldiers are simply determined to die, and do not hesitate to die with the soldiers of the People's Army.

So after more than an hour of fighting, the 1st Regiment not only did not assault the Japanese headquarters, but was beaten by the Japanese and retreated again and again, and as a result, it retreated to the side of the city wall, and with the fire support of the garrison troops on the city wall, it stabilized its position.

Qiu Yahui was very surprised by this result, but at this time Qiu Yahui did not realize that his judgment was wrong, thinking that the Japanese army was just stubbornly resisting in the corner, so he changed another regiment to continue the attack, and the result was that the battle lasted until about 2 o'clock in the afternoon, not only did the war still make no progress, the People's Army only occupied an area of about 100 meters from the edge of the city wall in Liaoyang City, and the number of people killed by the People's Army had reached more than 1,500 people, but more than 1,000 residents were rescued from Liaoyang City. In the previous battles in which the People's Army attacked the outlying positions of Liaoyang, captured the positions outside Liaoyang, and blasted through the city walls, the number of casualties of the People's Army was less than 200.