While Liu Hai and others were discussing, the huge fleet of the US military successfully conducted a landing operation off the coast of Incheon, and tens of thousands of US troops began to go ashore. The impact of the US landing at Inchon was enormous, and he directly divided the whole of Korea into two, and nearly 90 percent of the main force of the DPRK army surrounded the southern part of the Korean Peninsula.

In fact, a month before the US troops landed, Chairman Mao, who was concerned about the Korean war situation, had already discovered the huge weakness of the North Korean army, that is, the defense of the long coastline was too weak, and it was easy to be stabbed in the back. For this reason, Chairman Mao specially sent someone to remind Kim Il-sung of the DPRK and asked him to strengthen the defense of the coastline, just in case the Americans took the back road. In fact, some people in the Soviet Union at that time also discovered this, and at the same time sent someone to remind Kim Il Sung, and provided more than 3,000 pieces* to the North Korean army for defense.

In fact, Kim Il Sung also listened to the suggestions of the two countries and put a lot of effort into the coastline, such as setting up artillery and observation points, and deploying coastal defense forces. However, along the long coastline, Kim Il Sung focused too much on Wonsan Port, another port, and did not pay much attention to Incheon. Because the tide zone of Incheon Beach is about thirty-two feet long, it is one of the longest tide zones in the world. At low tide, the Incheon Port and the waterway become a mudflat. The speed of the current in the waterway can reach seven or eight knots, which is almost close to the speed of the landing craft. Moreover, this only waterway is extremely narrow, and there is almost no room for landing craft to turn around. The North Korean army can easily lay down in the waterway*, and a ship that is sunk or involved in an accident will only trap the ships that have entered the port and block the shipping lanes of the ships outside the port, so not only Kim Il Sung, but also the US military has many people who oppose the landing at Incheon, because there is also a suitable port for landing, Wonsan Port.

However, MacArthur, as a brilliant military strategist, thought the opposite, and felt that the port of Incheon had more opportunities. MacArthur and his staff were joined by members of the Joint Chiefs of Staff, Doyle, and other senior naval officers in Tokyo, at which he arrogantly gave the participants a rough explanation of the reasons for the choice to land at Incheon. In his statement, he referred to the example of a successful amphibious landing in the Southwest Pacific Theater during World War II, noted that a failure to land at Inchon would extend the war into the cold winter of the Korean Peninsula, and stressed that a landing operation could cut off the enemy's weak supply lines. In the end, he asserted that the Navy has never let me down, and I know they won't let me down now.

Although MacArthur's statements convinced most of those who were skeptical of the landing operation, US Army Chief of Staff Collins reserved his opinion. Before returning to Washington, Collins and other members of the Joint Chiefs of Staff carefully reviewed the entire Inchon landing plan and decided to ask MacArthur to submit a detailed plan report, specifically asking him to assess the likelihood of the landing operation achieving the desired results. The Joint Chiefs of Staff questioned whether the Eighth Army could successfully break through the Pusan Line after the Inchon landing, because the commander of the Eighth Army, Walker, had to obey orders to reorganize the 1st Provisional Marine Brigade into the 1st Marine Division to participate in the amphibious landing with the Eighth Army as the main force.

When MacArthur formally informed his principal commanders of the Inchon landing day, he sent an ultimatum to Washington, saying that there was no problem with the feasibility of our operation, and that there was a great possibility that the operation would succeed. The Joint Chiefs of Staff briefly replied: Your plan has been approved and you have reported to the President. Thus, the controversy over the Inchon landing plan ended.

Just when MacArthur decided to land at Incheon, Kim Il Sung deployed most of his artillery and * in Wonsan Port, and declared that he would let the American fleet bleed outside Wonsan Port! When MacArthur learned of this, he immediately began to lay out a deception plan! Within a few days, a large number of US planes and South Korean spies appeared at Wonsan Port, and all of their reconnaissance was related to the landing plan. In addition, MacArthur also took the trouble to send a mine-sweeping formation to carry out mine-sweeping activities at Wonsan Port, sent planes to bomb Wonsan Port, and so on and so forth, which made Kim Il Sung even more convinced that his judgment was correct!

From a purely military point of view, the deployment of the KPA on the line from Inchon to Seoul at this time was not at all suitable for anti-landing deployment, and although measures such as the establishment of coastal artillery and the laying of coastal artillery on Wolmi Island were taken, this was a natural routine and necessary measure to strengthen coastal defense under the condition that the US military had absolute air and sea supremacy. The focus of the deployment of the People's Army in this area is still preparing to go south to participate in the attack on the defense line of the Nakdong River! If the KPA really perceives the US attempt to land at Incheon, it only needs to deploy heavy troops on the 15th of September at Incheon, because this is the only day in the whole of September that can carry out the landing, and after this day, the troops can be transferred to the Nakdong River calmly and with peace of mind. An easier way is to sink a ship in the Exocet Channel, which can block the channel and thus null all US attempts to land! However, the North Korean army did nothing, and judging from its deployment and various actions, the Nakdong River was the focus of its attention, and Inchon was indeed the weak point of defense.

The Chinese side reminded the DPRK on three occasions that it should be aware of the danger of the enemy advancing from the sea to Inchon and Seoul to cut off the rear route of the KPA, and that the KPA should make full preparations to retreat to the north at an appropriate time, preserve the main force, and strive for victory in a protracted war. At the same time, Deng Hua, commander of the 13th Corps of the Northeast Frontier Army, and others also closely watched the development of the Korean war situation. Deng Hua said in the telegram that in view of the extension of the Korean People's Army's front to the south, the possibility of the US military relying on its naval and air superiority to make a desperate move in the middle and waist of the east and west coasts of the DPRK has greatly increased. In their report to Lin Biao, commander of the Fourth Field Army, Deng Hua, Hong Xuezhi, Xie Fang, and others clearly put forward the judgment that the US troops might make a large-scale landing on the flanks and rear and flank the front and rear. The Chinese Embassy in the DPRK also came to roughly the same conclusion, and reported the results to Chief of General Staff Nie Rongzhen: The US military is actively preparing for a counteroffensive, and from various indications, it is estimated that it may land in Inchon or other areas. Although the Chinese side has repeatedly warned the US military of the possibility of landing at Incheon, it has not paid enough attention. Although the Korean People's Army (KPA) has made defensive arrangements in the Incheon and Seoul areas, most of the units in these areas are newly formed and their combat effectiveness is relatively weak, making it difficult for them to effectively resist the large-scale landing operations of the US military.

The vanguard of the U.S. Tenth Army, under MacArthur's command, landed at Green Beach north of Wolmi, and the landing force included Pershing tanks from the 3rd Battalion of the 5th Marine Regiment and the 1st Tank Battalion. The landing force used tank landing ships designed and built during the Second World War, and the whole island was occupied before sunrise, with only 14 casualties of the United Nations forces and more than 100 casualties of the Korean army, including more than 200 killed and more than 100 captured, mainly from the 1st Artillery Regiment and the 1st Separate Marine Regiment. In order to stop the counteroffensive of the North Korean army, the second landing wave will be turned to Red Beach and Blue Beach.

The North Korean army did not anticipate the UN attack on Incheon, and before the battle at Green Beach, the North Korean army expected that the main direction of attack would be Wonsan, so they sent only a small number of troops to Incheon, and they arrived too late, they arrived only after the UN forces reached Red Beach and Blue Beach, and the defenders who were already at Inchon were also weakened and solidified by Clark's guerrillas.* The bombardment of the main ammunition depot was also damaged, and a total of 261 ships poured into the port.

However, the North Koreans knew their mistake and sent six columns of tanks to the beachhead, and the UN forces responded immediately, attacking the tanks with Corsair fighters, destroying half of the enemy's tank column and losing only one aircraft, and the Pershing counteroffensive wiped out the remaining Korean armored divisions and cleared the way to capture Incheon.

The results of the Inchon landing were enormous, and when Walker's U.S. Eighth Army broke through the Pusan line of defense and combined with the Tenth Army to attack the Korean army, the last Korean troops in South Korea were defeated, and the Korean troops around Busan numbered about 70,000 men, more than half of whom were killed or captured, but because the United Nations forces concentrated on capturing Seoul instead of cutting off the way for the North Korean troops to withdraw to the north, the remaining 30,000 North Korean soldiers fled north across the Yalu River, where they became new Korean divisions reconstituted and equipped with Soviet-style equipment. But it was too late!

The Inchon landing was of great significance, precisely because this amphibious landing operation was the biggest bright spot in MacArthur's life, and he was taken by surprise and attacked him unprepared, and in one fell swoop turned the seemingly hopeless Korean war situation around. At the same time, the accurate judgment of the Chinese generals and * on the Inchon landing also highlights the striking similarity of the analysis of the battle situation by the top commanders of China and the United States! Compared to them, Kim Il Sung is simply a fool, except for eating himself in the shape of a pig, all that is left is the instinct of mating!

After the Inchon landing, the Chinese leaders, especially Chairman Mao, have understood very well that the Korean war situation has died at the hands of Kim Il Sung, a fool, and even if they are no longer willing to send troops to help, they have no choice now, and if they really let the US troops occupy North Korea, it will make China fall into infinite passivity strategically, so the Central Committee of the Communist Party of China decided to send troops to North Korea as a last resort. Since the United States came under the cloak of the United Nations, in order not to oppose the whole world in name, the troops sent by China were named the Chinese People's Volunteer Army!