Ma Qiang gathered the reconnaissance information to the rear, Lu Qingshan and Xu Chong worked out an attack plan together, the 200th Division did not have a division commander, and Chu Tingchang was directly under the central government, and now it was actually a few of them who had the final say.

The initial plan is to disrupt the coordinated rhythm of infantry and artillery, so that the enemy cannot feel the law, and a few more times will make the enemy's psychology have a shadow, believing that his reaction will become more and more sluggish, and finally the enemy's main living forces can be wiped out on their solid positions with only artillery. Of course, such an attack may have a worse effect on the 5th Division, but it will be more effective against the 4th Division. After the Battle of Mandalay, the 4th Division had been owed a wing, its strength had not been replenished, and the soldiers were exhausted, so it was also a weaker link.

In order to implement the plan, Chu Tingchang had pulled the American-made 203-mm cannon to the front three days ago and camouflaged it well, but he never fired the cannon, just waiting to gather enough shells and wait for the opportunity.

These firepower were enough to level the hill and were the best weapon for mountain artillery warfare, but it took a lot of trouble to transport it to the front line, and two engineer battalions were specially used to build roads and strengthen bridges, and finally eight guns were fired into the established position.

Chu Tingchang did not expect to solve the problem with US bombing. Because he had to secretly pull his troops down at night, very close to the enemy's position, he was worried that the American troops would blow up his own people after bombing. At present, artillery is a more suitable branch of the army to combine with his precision strike methods. In fact, there is no essential difference between the artillery of this era and the artillery of the future, except for informatization.

But to deal with these two tough bones, he mobilized 200 barreled guns (not counting mortars) and 40 T27 multiple rocket launchers loaded in Willis jeeps.

This is a weapon that Chu Tingchang, through his relationship with Brooke, asked for priority production. Here he also gave priority to this weapon, which was lighter and more fire-intensive than towed artillery. It was specially designed to break the multi-layered defensive tactics that the Japanese army thought was flexible. The usual rhythm of artillery fire, easily mastered by experienced infantrymen, who could dodge during shelling, intermittent shelling, suddenly came out again. But this 114-mm 36-barreled rocket launcher can shoot out all the firepower in an instant, and it is not so easy to dodge.

Of course, in order to deal a devastating blow to the enemy, for the past week, the troops of Yamashita Fumi's have been surrounded and not attacked, just to stock up on ammunition. Chu Tingchang also felt that supplementing while playing was equivalent to adding oil, so it was better to add a few bases first, and then play them out together.

However, this is not without a cost. Yamashita took advantage of the fact that the Chinese army, which was besieging about 5 divisions of him, did not have the opportunity to attack, and built a strong defensive line. He didn't even break through. Because Sakagaki's advice to him is to continue to hold on and feign not to support in order to attract more enemies around. So that Sakagaki could strike at the Chinese army in other directions.

Yamashita accepted the suggestion and let his opponents surround him. He was so fearless, of course, because the military stations along the railway line were well supplied, and if he was in a hurry to retreat, he would inevitably destroy these baggage, and the surrounding terrain was favorable, which made Yamashita feel that it was a pity to give up these favorable conditions. In addition, he observed that there were many new recruits among the enemies besieging him, so he felt that he could break through at any time, and even counterattack, there was nothing to fear.

In order to attract Chu Tingchang, he also repeatedly showed weakness and gave up some positions, so the two sides sat quietly for about a week. Now Chu Tingchang wants to give the mountain a little bitterness.

Artillery observation aircraft constantly flew over the enemy's head, observing the movement of enemy troops. The Japanese troops in the encirclement also realized that the enemy shelling was approaching. Each time the aircraft observed, very little of the enemy was exposed to the lines of communication and positions. They are ready for a possible attack. According to the calculations of the mountain, if the Chinese army stormed, it would lose at least 10,000 men on the first day, and within a few days, the enemy would not be able to trap himself, so that he could go back and clean up Zhou Youfu.

The first round of firing was the M1 mountain gun. The artillery hit the hill and kicked up a few insignificant clouds of smoke and dust, all of which were powerless.

Yamashita observed the enemy's shelling with a telescope in command office, and it seemed that the attack on hell was wide, unfocused, and weak.

"Pavilion Chief Chu, you have been preparing for a week, this is such firepower?" He couldn't help but feel a little proud. I have heard that the American has strong logistics, and he has already seen it in Australia, but in fact, it is only strong in coastal ports, and once it goes deep inland, it is nothing more than that. He didn't quite believe how many shells they could send to Chu Tingchang under the bad road conditions in Southeast Asia. According to his calculations, the food and drink of the 70,000 or 80,000 soldiers besieging him should occupy eighty percent of the transportation capacity of Chu Tingchang's supply line.

Of course, this account of the Japanese is obviously calculated according to their own ability. Before the 6th Division cut off the railway, 60,000 rounds of artillery shells of various types had been pulled to the front, and then Chu Tingchang built an airstrip and used aircraft to pull artillery shells to the front, and about 200 to 250 tons of shells arrived every day. Now he has 120,000 shells in his hands.

The planes circled in the air, observing the enemy's movements. The enemy is also anticipating the area where the Chinese army is about to launch an offensive through artillery bombardment, and some units that are usually hidden have begun to move.

Mortars and 105-mm howitzers joined the firing. Begin to attack the transport lines and headquarters in depth of the enemy, the enemy exerts real pressure.

The Japanese planes took off from Hanoi and after arriving at the battlefield, they easily drove away the observation planes, but these observation planes took off from the grassland near the headquarters of the 200th Division and could return at any time, while the Japanese fighters spared a few laps and could only return to Vietnam from a long distance.

Sure enough, during the shelling, most of the enemy retreated into the tunnel, and after the shelling, the enemy hiding in the tunnel came out one after another and reoccupied the position. High-altitude drones use thermal imaging equipment to record the densest locations of tunnel exits. These areas will be the focus of the attack. The enemy made good use of the advantage of the anti-slope, but the heavy artillery of Chu Tingchang was deployed in the front. You can sacrifice the range, increase the angle of warp, and hit these places.

The inside of the enemy's tunnel is unknown, but the drone can observe that the hole is supported by a wooden support. If a shell falls nearby, it can still collapse.

The purpose of the first few rounds of shelling was to knock on the mountain and shake the tiger and make observations.

The artillery fire gradually subsided. So much so that Yamashita felt that the enemy might be about to attack. According to the statistics of his troops, the enemy fired more than 5,000 shells in a few hours of artillery preparation, and almost half of the reserve was exhausted.

In front of the 5th Division, the Chinese troops began to move towards the enemy's hilltop positions. The enemy re-entered the position and began to reinforce the damaged fortifications, digging through a number of tunnels blocked by floating earth and deploying machine guns. The 5th Division, believing that it had rich experience, completely stepped on the timing of the artillery bombardment, and when it withdrew, it even took away the heavy machine guns in an orderly manner, and then moved them out when it was defending. The two sides had just exchanged fire, and before the devils had time, they hit with a lurking crossfire, and the Chinese army retreated. The devil realizes that this is a weak brigade with no fighting spirit and decides to launch a charge.

Two squadrons of Japanese troops rushed out of the trenches and launched a condescending charge, attempting to advance near the starting positions of the Chinese troops in one fell swoop. The 155 heavy artillery of the Chinese army only began to roar at this time. The shells hit directly behind the position, were assembling on the slope, and the men and horses that took over the charging troops fell into the net of fire. Immediately 105-mm field artillery directly covered the surface positions. Compared with the previous blind shelling, which was completely unfocused, this shelling was not only accurate but also much more intensive.

The Japanese troops who rushed out of the trenches did not encounter artillery, but their retreat was cut off by the fire net, and they found that they could not go back. Yamashita observed that something was wrong on the high ground a few kilometers behind, and ordered the reserve to move to the high ground to the north to prevent the enemy from taking advantage of the situation to seize the flank barrier. The UAV observed the course of action of the enemy's reserves. When the enemy troops crossed a wooden bridge, the formation was closed. The troops behind were crowded together and could not get through. Clearly, the time has come.

Forty 36-barreled rocket launchers, known as "xylophones", began to fire. This is a powerful weapon that the Japanese army has never seen, although the accuracy is poor, but it can drop 1440 ammunition in an instant, which is not possible with ordinary body-barreled artillery.

The Japanese troops, huddled together, observed the rolling red clouds surging ahead, as if countless fire dragons were rolling in the clouds. In an instant, thousands of unsupported soldiers were enveloped by the dense rain of rockets. Right in front of the mountain, a scene like hellfire descended.

Chu Tingchang's rocket artillery has been lurking for a week, just waiting for such a first performance opportunity. In fact, these weapons can also be used to attack surface positions, but the enemy at the front is too alert and not concentrated. So he has been waiting for the enemy in the rear to move, and the enemy in the rear on the march is not only in dense formation, but also carries a large number of heavy weapons, which is not so easy to dodge.

This artillery bombardment can be regarded as a complete fire show in which only the artillery participated, from the observation from the air to the various firepower strikes with different ballistics, different depths, and different timings, carving every detail of the artillery attack to the extreme. The enemy's front line could still only observe the enemy situation within a few kilometers, and Chu Tingchang had already observed the information station on the mortar level unit. In fact, his 200th division is still vacant as a division commander, and he is also the commander, and if he sits far away in the rear, he will be able to beat the foot of the mountain that is in the battle formation.

So far, Chu Tingchang's 203-mm cannon has still not fired, and they are quietly waiting for their own opportunity.

The 4th Division watched the positions of its neighbors in the distance being engulfed by powerful firepower, and watched with horror. They had never seen such an artillery bombardment, and at first it was a mess, but suddenly it was so fierce that the shells fell from the position like eyes, and especially the last blow, almost instantly, concentrated the firepower that at least a hundred * guns could have, and smashed the 5th Rapid Wing. This is a density of firepower that cannot be achieved by a heavy artillery wing of 10 divisions. But my side is surprisingly quiet, only some* fall from time to time. It looked like the enemy was about to open a breakthrough from the 5th division.