North Korea's Shangganling blockade: 4 people were injured in the 45th Division, 5 people were killed and 2,800 people were killed.

Mao Zedong summed up the Battle of Shangganling and said: The fortifications are very strong.

195 1 autumn, under the personal decision of chairman Mao, the people's volunteers built fortifications from the east coast of Korea to the west coast, digging tunnels for 250 kilometers, and built a solid defense line that could not be broken in the east. 1952 In April, the Volunteer Army 15 Army was deployed in the mountainous area of Vu Thang, the Korean defense line.

At that time, the 40th Division of the US Army was stationed in Zhuzi Cave, Yang Di Village and 537.7 Highlands, and the enemy fortifications in Shangganling were built on two highlands opposite the Volunteers. Volunteers can see that the American troops on the opposite hill are very lively, cars and people come and go, and the radio station has been shouting. If the weather is fine, they will wrestle, and some women will dance, drink and play songs and records. This is to discourage volunteers. A class of volunteers shot and killed a regiment, and the US military concentrated artillery and machine guns for several days. When the 26th Army handed over the position, it introduced its experience to the 15 Army: first, prepare for attacking the enemy.

Zou Xixiang, a soldier of the 45th Division 1 35th Regiment1Company, made several fake bunkers with big stones and killed seven enemies in a row. The enemy was quite angry and fired at the fake position for three days. When the deeds were reported to the troops, the commander Qin Jiwei ordered: Fight actively!

133 regiment 45 division 7 company soldier Gao Kui destroyed 9 enemy forts with recoilless guns. Zou Xixiang and Gao Kui were invited to the division to introduce their experience: to ensure that each position has a single bunker and a hidden place in the middle. Such an organized, trained and directed shooting activity took 10 days to build fortifications, dig cat's ear holes, trenches and anti-gun pits, and train sharpshooters. After preparation, the entire position of the 45 th Division of the Volunteers acted together, destroying 270 American troops that day. They also used 90 rocket launchers to hit tanks, and 82 artillery cooperated with infantry to hit bunkers and enemy groups. Anti-aircraft machine guns are also used to attack planes and cars. Full bloom, handy. From May to July, * * * killed more than 2,800 enemies, defeated 28 tanks, 67 cars and 0/70 bunkers. Only four people were injured and five died in the 45th Division. After three days of fighting, the enemy was afraid and the fortifications moved to the opposite slope. There are fortifications on the top of the mountain, and the sniper rifle of the volunteers has also been taken off. The U.S. military suffered a lot and called the 537.7 highland Beishan "sniper ridge".

On the other hand, the American troops in the highlands gave up the triangle, but they were not reconciled. It fires more than 20,000 shells at volunteer positions every day, but it does little damage to tunnels and bomb shelters. The volunteers made a lot of fake fortifications, set up fake gun holes and fake gun holes, and the US military didn't know what to do. The US military sent a reviser to investigate, and the volunteers pushed the anti-aircraft guns to the top of the mountain to fight planes, shooting down four planes in a row, and the reviser never dared to come again. Volunteers dug trenches, and when the enemy saw it, they fired desperately, and volunteers began to suffer casualties. Volunteers found a way to pile new soil on the surface, and the enemy saw it and hit it. In fact, the volunteers went to dig ditches on the other side of the mountain. When the volunteers were digging there, the enemy found that they had been cheated and wanted to fight there. The volunteers turned to dig here. The artillery pulled a Grenade with a rope, and it exploded and blew up a pile of firewood ash. The enemy thought it was the artillery position of the volunteers and hit it. Dig a good traffic ditch and there will be more roads. Small units carry out activities to capture prisoners alive, touch each other's positions and find enemy artillery positions. According to statistics, after nine months of defensive operations, 15 Army's cold artillery and cold artillery activities wiped out the enemy 1998 1 man, and only 35 volunteers were killed or injured.

At this time, Maoer Cave has become a small tunnel, and a defense system with four large tunnels as the backbone and 12 small tunnel as the fulcrum has been built. Many tunnels have opened a mountain, and the entrance in front is a tunnel that leans against the enemy. 10 On June 4th, the Battle of Shangganling broke out. On that day, the US military fired more than 300,000 shells and the plane dropped more than 400 bombs. Landslides and ground fissures turned rocks into dust, and the mountain height decreased by 1 m, without damaging the main tunnels of the volunteers. Although the US and South Korean troops once occupied the surface position, they suffered a lot. Generally speaking, tunnels play the following roles:

First of all, the tunnel is a tactical base. Set up a regiment battalion command post in the second-line tunnel to transport troops to the first-line positions and tunnels. Mortars, mountain guns, and field guns are hidden in front, playing accurately and ruthlessly, and the guns cooperate. Twenty-four Katyusha rockets were placed in the cave. After calculation, the car came out and pressed the button. Twenty-nine fire dragons volley at the enemy's defense lines and move immediately after the battle. Heavy machine guns and artillery protect the tunnel entrance, attack the enemy near the tunnel, protect the tunnel and destroy the enemy. 597.9 Highland No.2 Field Artillery is responsible for protecting Tunnels No.2 and No.8; Two mountain guns are responsible for crossing the main peak pit; 133 regiment 18 mortar is responsible for the remaining tunnels; 537.7 The tunnel entrance of Beishan position is also supported by artillery.

Second, the tunnel is a hospital. Injured volunteers can be evacuated in time and sent to the rear tunnel for treatment after initial rescue to reduce the casualties of volunteers.

Third, the tunnel is the home of volunteers. A large number of troops, food and ammunition can be stationed in the tunnel. At the height of the fighting in Shangganling, a heavy machine gun fired more than 1000 bullets a day, which was four times as much as usual. The shells are stored until each gun has 800 to 1000 rounds, which can be fired continuously for three days. However, after a company of American troops attacked the downhill position, under the attack of three waves of volunteers, the ammunition was exhausted and the losses were heavy, so the remnants had to retreat. Han Jun's transport vehicles were afraid to drive up the mountain when they saw the fierce gunfire. At the beginning of the war, life in the tunnel was also very difficult. At first there was water to drink, but later it was saved. Finally, there was no water to drink, and the biscuits could not be chewed, so they were softened by urine bubbles. Some soldiers even exchanged toothpaste. Stick to the end when someone is here, and attack when you have the chance. Some tunnels cannot be found. When digging the tunnel, I found that the soldiers inside had died heroically, and the soldiers at the underpass still maintained the shooting positions.

4. Tunnels can give full play to the advantages of volunteers. The distance to attack the enemy was greatly shortened, and a small group of soldiers were launched to raid and quickly insert into the enemy. Hand-to-hand combat frightened the American army, and grenades, grenades and explosive barrels were thrown into enemy groups to blossom. Even soldier Lai Fa was shot and injured. He picked up a Grenade and rushed over. On the way to the bunker, he was injured in many places. But he climbed to a place two meters away from the bunker, then rested on the ground, saved his last strength, jumped up, rushed to the bunker together with people and grenades, and died with the other bunker with a loud noise. There are many such warriors. 134 The 8th Company of the regiment launched more than 70 small counterattacks in 1 4 days of the tunnel, annihilating the enemy 1000 people.

1June, 953, Qin Jiwei met Mao Zedong for the first time in Zhongnanhai Juxiang Bookstore. Mao Zedong said: "Shangganling was well fought. The Battle of Shangganling was a miracle, which proved that Chinese people's Volunteer Army's bones were harder than the steel of the United States of America." . He also said: "Now we have stabilized the front at the' 38th parallel', and the problems of victory and defeat and defense have been solved. There is no unbreakable defense line in history, and the Shangganling defense line has not been broken. This is a miracle. "