The Japanese army had long been eyeing Shanghai, an important industrial base in China, and had vowed to occupy Shanghai within one month, so General Matsui Ishine was appointed as commander-in-chief and successively carried out a "three-dimensional input" with nearly 300,000 troops from the army, navy, air force, and special forces, and dispatched more than 130 ships, more than 400 aircraft, and more than 300 combat vehicles. The Chinese defenders amassed more than 70 divisions, 40 ships and 250 aircraft. Feng Yuxiang served as the commander of the 3rd Theater of Operations, and later Chiang Kai-shek directly concurrently served as the commander. The troops were divided into the Central Army, the Left Wing Army, and the Right Wing Army, with Zhang Zhizhong, Zhu Shaoliang, Chen Cheng, and Zhang Fakui as commanders-in-chief respectively.

The Battle of Songhu on August 13, 1937 was considered a sign of China's move towards a full-scale war of resistance, and in this earth-shattering battle that lasted for three months, China and Japan mobilized more than one million troops (the Japanese side mobilized about 250,000 troops and suffered more than 40,000 casualties; The Chinese side mobilized about 750,000 troops and suffered more than 250,000 casualties), Chiang Kai-shek's tragic combat sacrifice of the most elite troops in exchange for the respect of Western countries for China's strong and unyielding spirit of resistance against Japan, and also made the Communist Party and warlords of all walks of life really trust Chiang Kai-shek's leadership of the War of Resistance (in the past, in order to prevent Chiang Kai-shek from using the War of Resistance to eliminate dissidents, various warlords adopted a more perfunctory attitude); More importantly, the Battle of Songhu completely shattered Japan's wild talk of "the death of China in March" and dragged Japan into the quagmire of war. At 9:15 a.m. on August 13, 1937, the heavy artillery of the Japanese ships bombarded our Zhabei. The Japanese Marine Corps, from the Tiantongan and Hengbang Road, crossed the Songhu Road and rushed into the Baoshan Road and fired at our security team stationed near the West Baoxing Road. Our army is for self-defense

As for the Chinese army: the total strength is about 50,000

A. Army: 87th, 88th, and 6th Divisions, 20th Independent Brigade, Shanghai Municipal Police Corps, Jiangsu Security Team, and 1st Battalion of the 2nd Artillery Regiment.

B. Navy: about 10 ships of various types.

C. Air Force: There are about 250 aircraft that can support combat.

On the Japanese side, the total strength on the ground is about 15,000 troops.

A. Army: There are about 2,100 infantry brigades and about 3,600 soldiers in the township.

B. Navy: There are more than 30 ships, about 3,200 marines, and about 3,000 marines have been transferred to join the marines.

C. Air Force: There are about 100 new aircraft.

In terms of the number of troops, the Chinese army was about twice as superior to the Japanese army, but the Japanese army had superior combat power and firepower

The Japanese army could carry out amphibious landings from the south bank of the Yangtze River estuary and the north bank of Hangzhou Bay, and then break through the two flanks of the Chinese army, and divide on the Beijing-Shanghai line, cut off the supply lines and retreat routes of the Chinese army, and completely encircle the Chinese army.

The Chinese army faced the river and the sea, with nowhere to penetrate and did not have enough striking force to destroy each of the Japanese forces at the time of the separation of the two flank landings.

At 9:15 a.m. on August 13, 1937, the heavy artillery of the Japanese ships bombarded our Zhabei. The Japanese Marine Corps, from the Tiantongan and Hengbang Road, crossed the Songhu Road and rushed into the Baoshan Road and fired at our security team stationed near the West Baoxing Road. Our army fought against it for self-defense. The "August 13th" Songhu War of Resistance began. The reason why the term "incident" was used instead of "incident" was because the Japanese aggression against China was seriously underestimated at that time. Battles were fought in the urban and suburban areas of Shanghai, then the largest metropolis in the Far East. Only the French Concession in Shanghai and the half of the Public Concession in Shanghai south of Suzhou Creek practiced armed neutrality and were respectively divided into defense zones for the armies of France, Britain, the United States, and Italy. The public concession north of Suzhou Creek and the area where it crossed the border for road construction belonged to the Japanese defense area and was the base of operations of the Japanese army in Shanghai. A total of about 1 million troops from both China and Japan were engaged in the battle. The campaign itself lasted three months and can be divided into 3 phases. The first phase, from August 13 to September 11, saw the National Revolutionary Army defend the city and stop the Japanese troops who landed; The second phase, from 12 September to 4 November, saw the two armies involved in bloody street battles for control of the city; In the final phase, from November 5 to the end of the month, the Chinese army was flanked by the Japanese and retreated.

On the 12th, the Japanese militarists occupied the entire Shanghai, and the person in charge of the Volunteer Army who received the report inspected the arsenal, and now the northern Kulen, Mobei, the Japanese are eyeing the tiger, supporting Pu Yi as the emperor of Manchukuo, positioning Kulen as Manchukuo, that is, Mongolia in later history, Outer Mongolia has long been an inseparable part of China, and now there is no time to clean up you, the war in the south is tight, Li Ming, the commander-in-chief of the Volunteer Army, mobilized the Fushun Navy, three brigades are on standby, and more than 10,000 bombers from 15 brigades of the Air Force, the navy, On the morning of the 13th, the Japanese high-level General Matsui Ishine and the combat wing were drinking to celebrate the victory in Shanghai, the Japanese devils were arresting people, the traitor team was arresting people, and the surrendered national army police force was also like wild dogs. Give the police a shot, the dog traitor, a body of blood flowing from his chest, the captain has caught a man who said where is your accomplice, over there, good, good, the policeman with a lewd smile on his face, you are useless for fear of a headshot, and more than a dozen people began to search for the past over the south.

At this time, the outer positions of the Japanese army were subjected to heavy artillery bombardment, more than a dozen Japanese destroyers who came to reinforce and opened fire with the Volunteer Navy, and dozens of Japanese bombers also arrived, intending to attack the Volunteer Navy. At that time, Britain, France and the United States forced Lao Chiang to cease war and give up Shanghai, and Lao Chiang had no choice but to give up, which was really strange, and continued to observe.