Moreover, in the battle with the Russian army, the only thing that can pose a threat to the defending side is usually the enemy's artillery, but once the ground forces attack, the enemy's artillery will not open fire easily. Of course, during the enemy's attack, the soldiers will also raise their guns to shoot while rushing, but this kind of shooting is too blind and cannot be formed on a large scale, and the threat to the defending side is not great, so the machine gun teams on the defensive positions basically do not need to change their positions frequently.

However, in the face of the attack of the People's Army, the Japanese defense line clearly felt that the strength of the opponent's counterattack was not ordinarily large, not only the density of firepower was large, but also the accuracy was not bad, as long as it was a little more outcropping, there was a danger of being hit by the enemy, and the machine gun group was still dangerous, often the machine gun did not go off a few times, and a few shells flew from there, exploded near the machine gun group, and then completely muted fire.

In fact, the People's Army used the three-three system tactics created by the ancestors of the time-travelers in the old time and space. This is a company-battalion scale offensive tactic suitable for light infantry, and the main idea is to appropriately disperse the density of troops to avoid being killed or wounded by the enemy's dense firepower, and emphasize close coordination between various combat groups, advancing layer by layer, and alternately covering the attack. The tactics of the three-three system first originated during the War of Resistance Against Japanese Aggression in the old time and space, matured in the civil war between the Kuomintang and the Communist Party, and were widely used in the War to Resist US Aggression and Aid Korea, and became famous in one fell swoop, becoming one of the iconic tactics of the ancestors of the traversers. Prior to the crossing, the crossing fighters of the Marine Corps were learned and trained in this tactic.

The operational principle of the three-three system of tactics is: Divide the squad into three combat groups, each group is in a triangular offensive formation, each soldier has a clear division of labor, and is responsible for attacking, covering, and supporting. The inverted triangle formation is changed from each other, and the distance between each soldier is about 15 meters; three combat groups form a combat squad, and each combat group maintains a distance of 30-40 meters; the three combat squads form a battle group, which is deployed in a skirmish line formation when attacking, and changes the combat formation according to the instructions of the team leader or squad leader; and the battle group is deployed with "spoken language", "sign language", and "military horn" after the battle group is deployed Such a battle group of about 30-40 people, when fully deployed, can cover a battle line 800 meters wide.

When carrying out offensive operations, it is first necessary to clarify the direction of attack and the available terrain features, and determine the tactical essentials such as the phased shelter points of each group, and then the combat group will take the action of evacuating in formation and advancing in a low posture, accompanied by the cover of light machine guns and heavy machine guns, and the fighters will form a layered assault. Each small group formed a front triangle or rear triangle to charge forward, echoing back and forth, to avoid the killing of dense firepower and ensure the continuity of the attack.

After the machine-gun group entered the first firing position, the groups maneuvered to the first shelter point. After reaching the first point, fire was launched to kill and wound the enemy, while covering the maneuver of the machine-gun crew. Once the machine gun group is in place, suppress the enemy while covering the other groups to maneuver forward, and so on. Wave attacks are formed. At the same time, in the dead end of the enemy's fire. Mortars are also available, and a special shooter is usually placed next to the Heavy to shoot the enemy commander or Heavy.

In addition, in the course of the attack, according to the battlefield situation, they will either concentrate the firepower of the whole squad to clear the exposed enemy fire points, or use smoke bombs and flash bombs to direct the enemy's dense positions with heavy firepower for their own side.

The advantage of the three-three system tactics is that it can carry forward its own firepower and greatly expand the range of its own frontal attack, and at the same time, because there is cover for its own side in the front and back, left and right, it takes care of each other, and when the troops are in close contact. It avoids the situation of being surrounded by the enemy alone, and can also be cast like a net at the other side to encircle the enemy, thus making up for the lack of individual combat quality; it can allow each group to advance alternately, cover each other, and disrupt the enemy's line of sight and judgment, and can form an attack force from multiple directions and angles; it avoids excessive losses when encountering artillery fire and dense firepower; and it is convenient for command to maximize the attack force.

The biggest weakness of the three-three system tactics is that the tactics are too complicated, the quality of the soldiers is required, and the various units need to cooperate with each other, so they must go through a long period of relatively strict training before they can carry out this tactic, and if they want to reach the level of proficiency in their use, they will have to go through several times of actual combat running-in.

In addition, the three-three system tactics are only the operational tactics of small-scale troops, usually to the company level, and at most to the battalion level. Of course, this does not mean that the three-three system tactics cannot be used in battles at the regimental and division levels; after all, regimental divisions and even more troops are composed of companies, battalions, and even smaller units, but in battles at the regimental and division level, it is not possible to rely only on the three-three system tactics, and a more macroscopic tactical command is also needed.

After the East China Government entered a period of stability, the three-three system tactics became one of the key training tactics of all units of the People's Army; up to now, most of the soldiers have been trained for more than a year, and it can be said that they have mastered the basic tactical principles and applications. Of course, because the war patterns of the two eras are different, the People's Army's three-three system tactics have also been improved, the biggest difference is that in the old time and space, the People's Liberation Army was composed of a squad of nine people, which happened to form three three-person tactical groups, while the People's Army's establishment, a squad of 12 people, in the selection of four three-person tactical groups or three four-person tactical groups, carried out multiple rounds of line surveying, and finally determined to form three four-person tactical groups, but each group still formed a triangle In addition, each squad of the People's Army has two sets of grenadiers, which can be used by the extra soldiers, and the range of the grenadiers is about the same as that of the rifle, which is very convenient to carry and use, and can strengthen the combat firepower of the entire squad. Once the enemy's firepower point is discovered during the attack, you can first use grenadiers to strike, reduce the laziness of mortars and machine guns, and help seize fighters on the battlefield.

However, because the People's Army still lacks actual combat experience in the tactics of the three-three system, although it is well used in daily training, the training is certainly not a real battlefield, so when it is used on the battlefield, it still seems a little blunt, but it is completely sufficient to deal with the Japanese army in this era. After all, this is the first time for the Japanese army to face such tactics, and after getting used to the simple, rough, and direct tactics of the Russian army, it is very unaccustomed to the highly technical tactical contest of the People's Army Therefore, it is naturally more difficult to cope with the attack of the People's Army now, as if all the previous perceptions have changed, and the opposing army's army seems to be all over the mountains, and there are countless people, and no matter how they fire, they will not be able to kill many people.

After more than 2 hours of fierce fighting, three positions have been attacked by the People's Army, fortunately the Japanese army's ability to fight with white knives is quite strong, so it fought desperately to the death, and repelled the attack of the People's Army in two positions in a row, but in the end there were still two positions in Xizhukou and Jiutaizi Village.

The commander of the Japanese army, Harimitsu Tsuchiya, was also greatly shocked, because the headquarters of the Manchurian Army in Liaodong gave him an order to hold on for three days, but now it has only been half a day, and two of the positions on the periphery of Shaling Fort have been lost. Therefore, Tsuchiya Harumitsu also ordered that all positions must be defended, and if the positions are lost, then the character army must all stick to the positions and cannot take a step back.

After receiving the order from Harumitsu Tsuchiya, the Japanese troops in each position also knew that they had a heavy responsibility, so in the afternoon battle, the Japanese army could only rely on frenzied shooting and strengthening the intensity of firepower to block the KPA attack, without considering the plan for the use of bullets, and as a result, it took less than two hours for the bullets in 5 positions to be exhausted and rushed to the headquarters.

And Tsuchiya Harimitsu could only give an order to take out all the spare bullets in the position and distribute them to various positions. As a result, in the afternoon battle, no more positions were lost, but the ammunition consumption of each position was at least three times more than usual, and the Sand Ridge Fort itself was only a temporary position, and it was impossible to store too much ammunition, so on the first day of fighting, the Japanese used up all the ammunition reserves.

Early the next morning, the People's Army launched another attack on various positions of the Japanese army, and after the first day of fighting, the People's Army became more comfortable with artillery tactics and the tactics of the three-three system; first of all, the artillery bombardment was not scattered shooting, but concentrated firepower, and bombarded a position, or a certain section of a position, so that the target of the attack was more concentrated, and the intensity was naturally greater, so the same 30-minute artillery bombardment almost completely destroyed a position.

In addition, due to yesterday's battle, the Japanese army consumed a lot of ammunition, and it was difficult to maintain yesterday's firepower intensity today, so in the morning battle, despite the desperate resistance of the Japanese army, the Madaokou formation around Shabaoling was contested several times, and was finally captured by the People's Army, and the Tangshulinzi position along the Liao River was also declared lost。

Although the Japanese army still had two positions to resist stubbornly at this time, its overall defense line had been torn apart by the KPA, so the KPA only used a small number of troops to contain the Japanese troops in several other positions, and the main forces of the two armies could directly attack the main position of Shaling Fort.