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Du Kaishan's plan didn't go very smoothly at first. 【. When the excavation of the tunnel began, the Japanese garrison in the leg of the mountain really couldn't hold their breath anymore. On the leg of the mountain, where there was no Japanese firepower point, dozens of new firepower points suddenly appeared under the root of the mountain.

When the tunnel was excavated under the root of the mountain, in order to destroy the already dug eyelids, some troops were even dispatched from several hidden tunnels to counterattack, trying to blow up the tunnel that was digging very fast. It was just that it was blown back by a light and heavy machine gun and mortar by the covering troops.

The counterattacking Japanese troops were blown back, but the grenadiers fired from dozens of cross-firing points on the leg of the mountain and the infantry guns fired at extremely difficult angles also brought a lot of casualties to the tunnel excavation troops. The grenadiers hit by the devils were at a tricky and accurate angle, and the mortar shells that returned fire hit these fortifications but they didn't even tickle.

The Japanese commander was shrewd and clearly saw the danger of these tunnels, and tried every means to destroy them. When the tunnel was dug under the root of the mountain, the Japanese army also sent soldiers to carry out a suicide attack in a single way, strapped to ** bags, in an attempt to blow up the tunnel.

If it weren't for the incendiary bombs fired by the artillery, the dense bushes on the foot of the mountain were set on fire, blocking the sight of the Japanese troops. At the same time, the Sanqi artillery was pushed directly to the foot of the mountain to carry out point-to-point strikes in the face of the artillery fire from the Japanese army on the mountain, and the Japanese army's most fierce firepower and the most important positions were destroyed. At the same time, at the cost of nearly half of the heavy machine gun losses, the covering troops suppressed the strength of the Japanese counterattack, and were almost succeeded by the Japanese several times.

Fortunately, the excavation distance of the tunnel was not too far, and although there were some casualties, it was finally dug under the foot of the mountain. After the regiment's 37-gun group, the flat-firing 75 field artillery, and a large number of bazooka fighters risked heavy casualties and adopted the method of close firing to clear out the dozen or so bunker groups exposed by the Japanese army's mountain legs, the infantry began to attack on the whole line.

After the tunnel excavation was completed, it was the Japanese army who were unlucky. Accompanied by three red flares, the attacking troops were formed in squads, either pushing gasoline drums filled with mixed cement, carrying Molotov cocktails and cluster grenades, or leaping from the tunnels to pounce on the Japanese bunkers. Or use the opened gasoline barrels as improvised bunkers, and rush to the Japanese bunkers under the cover of firepower.

Du Kaishan gave the remaining bunkers at the foot of the mountain to the artillery, and the infantry's attack line was drawn above the leg of the mountain, and the artillery with enough ballistic curvature such as mountain artillery was not powerful enough to blow up the bunker part. At the same time, the lightness and agility of the bazooka are used to attack the bunkers along the entire leg of the mountain with grenades and cement and flamethrowers.

Qin Zesheng was still very cautious when formulating the attack plan, using the lightness and randomness of the bazooka to first eliminate the covering fire points around the Japanese permanent fortifications. Then use the shooting dead angle of the permanent fortifications, use a large number of ** bags, cluster grenades, Molotov cocktails, and even cement to carry out directional blasting or directly block the shooting holes with a large amount of cement for those permanent fortifications that cannot be done unless they directly hit the shooting hole.

Obviously, when the Japanese army designed and built the fortifications, they did not anticipate that there would be such a light and direct-aiming weapon as a bazooka that could be used in almost any terrain. Although the penetration of this weapon is not enough to deal with the permanent fortifications with a thickness of one or two meters of concrete, it is not a problem to knock out the covering fire points of the civil structures around these permanent fortifications.

Although the permanent reserve of the Japanese army was large, it did not cover the entire mountain. With the exception of some permanent fire points, most of the fortifications were built of civil engineering. It's just that many of the fortifications were covered with steel plates to strengthen the defenses. Although the defense against vertical fire is increased, the defense of the front is still compared to the permanent fortifications made of reinforced concrete.

These civil engineering flank cover fire points and those permanent fortifications form an interdependent and mutually protective situation. In the Japanese army, those fortifications that were strong and could prevent direct hits from a hundred-mm gun served as support points to cover these civil fortifications. And these civil fortifications have a much wider firing range, which can protect the flanks of those support points.

However, the Japanese army probably did not even think that the opponent would directly block the shooting holes with concrete filled with concrete filled after striking the covering fire point, in addition to forcibly stuffing incorpoline cocktails into those permanent fortifications that could not be done even by small-caliber direct-aim artillery.

Under the cooperation of this variety of tactics, two-thirds of the Japanese army's bunkers on the entire mountain were defeated within an hour. The two permanent fortifications located on the mountainside, which served as the support point for the defense of the entire mountain, were either burned inside and out by the opponent's flamethrowers, or they were simply blocked by a large amount of cement, and lost their use in suppression.

Looking at the follow-up attack that progressed smoothly, Qin Zesheng put down the telescope in his hand and said to Du Kaishan: "Commander, you are so delicate with this hand." Although this method of warfare was somewhat rusty for the first time, the casualties were much smaller than expected. In particular, the tactic of using bazookas and flamethrowers to clear the covering fire, and using ash to directly block the Japanese firing holes, is simply too whimsical. The little devil has to be blocked inside. ”

"Those heavy turtle shells built by the devils, we can hardly help them without heavy artillery. The single storage is also very difficult. One firepower point, 100 kilograms of ** was blown up, and there was basically no major damage. Even if the Japanese troops inside were shocked to death, they could still quickly mobilize troops to support through the Guò underground passage. There's no way we're going to completely destroy these tortoise shells. ”

"It's not the same to plug their shooting holes with ash. No matter how many troops the little devils reinforced, without a shooting hole, the Japanese troops who came up with reinforcements would not be able to strike at our army. Without the firing holes, no matter how many machine guns they had and how strong their fortifications were, they would be of no use. ”

Hearing Qin Zesheng's praise, Du Kaishan blushed and said, "What did I come up with, if I had this ability, I wouldn't have to hurt my head for these shrunken turtles." This method was conceived by No. 1, and those ash and gasoline barrels were also specially approved by him from the materials seized in Dong'an. This attack tactic was developed by One himself, and we are just trying it out first. ”

When Du Kaishan was talking to Qin Zesheng, the telescope in his hand was not put down. Instead, he has been closely observing the battle on the mountain. He was quite satisfied with the fierce fighting on the mountainside, but he was not satisfied with the fact that the company that attacked the ridge line was driven out again after several times into the Japanese artillery fortifications.

Without the threat of the flanks and rear, the vanguard that had been suppressed in a depression on the mountain returned to the sun. Although they did not carry cement and Molotov cocktails, they specially strengthened two bazookas and a large number of grenades, ** bags, and blasting canisters when they left.

Due to the problem of the firing range, the Japanese army did not have many permanent firepower points on the ridge line, and most of the permanent firepower points were concentrated in the front of the mountainside, and the ridge line position was mostly field fortifications. The greatest threat to the vanguard company was not the Japanese field fortifications on the ridge line, but the back-hitting firing points on the mountainside.

The Japanese troops at the ridge line field fortifications were suppressed by artillery fire, and the back-to-back fire points were eliminated by friendly forces. Without the threat of the flanks and rear, this vanguard is much more comfortable with nature. However, the strength of the counterattack of the Japanese troops placed on the anticline was quite large.

In particular, after the Japanese troops in other fortifications were tightened, they quickly reinforced several artillery permanent fire points at the ridge line on the top of the hill through the Guò underground passage. Not only in the shortest possible time, a large number of reinforcements were mobilized for the artillery fortifications, but these reinforcements also cooperated with the Japanese troops on the anticline to continuously counterattack the vanguard troops on the ridge line.

The forces deployed by the Japanese army on the anti-slope and the reinforcements to the ridge line through the underground passage of Guò were extremely strong. The vanguard who rushed up succeeded several times and was driven down several times. Although the two Japanese artillery bunkers were blown up with **, their own casualties also reached one-third, and the intensity of the attack was significantly reduced......

Looking at the pioneer company that was not progressing well, Du Kaishan put down the telescope in his hand and said to Qin Zesheng beside him: "I'm transferring one connection." So many troops are concentrated on the mountainside, is it used? The forces are all concentrated together, and the density is too high. Don't forget, the Japanese also had heavy artillery on the camel in the back. 1150 heavy artillery down, how many dead and wounded do you have? It's not that the devil hasn't adopted the tactic of burning jade. ”

Qin Zesheng nodded thoughtfully, grabbed the walkie-talkie beside him, and directly adjusted a connection to connect the edge to the edgeline. The follow-up troops carefully cleared the various firing points of the Japanese troops on the hillside according to the predetermined plan. At the same time, two companies rushed into the mountain along the entrances of several underground passages that had been exposed abandoned by the Japanese army.

The entrances and exits of these hidden tunnels specially used for tactical counterattacks by the Japanese army were cleverly built. According to the plan of the Japanese army, each entrance and exit could ensure that all the troops of the size of a squadron could rush out of the fortifications within five minutes. Therefore, although the entrances and exits of these hidden tunnels are very cleverly repaired, and a lot of concealment has been made. If it weren't for the Japanese army taking the initiative to attack, it would have been difficult to be revealed, but the access channel was not narrow.

The troops who rushed into the fortifications attacked the deep interior of the Japanese army along the underground passage built by the Japanese army. The attacking troops used flamethrowers plus grenades and submachine guns to rush the Japanese in depth. Seeing that the troops rushed into the interior of the Japanese fortifications, Du Kaishan, who was afraid that the inexperienced troops would suffer, immediately threw in the reconnaissance company that followed him and took over the ordinary company.

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