From 65438 to 0900, Japan directly participated in Eight-Nation Alliance's war of aggression against China, and it was the country that sent the most troops and plundered the most rights and interests.

/kloc-At the end of 0/9, the anti-imperialist patriotic Boxer Movement with farmers as the main body appeared in the northern land of China. The slogan of the Boxer Rebellion "Help the Qing Dynasty to Destroy the Foreign Countries" filled the western powers who carved up China with hatred and fear. While threatening the Qing government to step up the "extermination of the Boxer Rebellion", they planned to take the opportunity to send troops to China and plundered it. 1In June, 900, eight countries, namely Britain, France, Germany, Austria, Italy, Japan, Russia and the United States, openly formed Eight-Nation Alliance's invasion of China, and directly participated in suppressing the Boxer Rebellion, which opened the prelude to Eight-Nation Alliance's war of aggression against China.

On June 1900, Eight-Nation Alliance captured Dagu Fort. By the 30th, there were 3,828 Japanese soldiers and soldiers landing here, ranking second among the eight imperialist invaders landing in Dagu. This unit went to Tianjin one after another from the 29th, and soon took part in the battle against the Boxer Rebellion and the Qing Army, and participated in the shelling of Tianjin. In this campaign, the Japanese army sent 2700 troops, accounting for more than half of the allied forces. After the Japanese army captured Tianjin, it occupied the richest northeast of Tianjin and colonized this area for two years. In August, there were more than 5,000 allied troops15,000 who invaded Beijing, including 7,200 Japanese troops, accounting for about half of the total allied forces, ranking first among the eight-nation invading forces. /kloc-in August of 0/4, the allied forces captured Beijing, the Japanese army captured Chaoyangmen and Dongzhimen, and then occupied Andingmen, Deshengmen and Xizhimen. Empress Dowager Cixi fled to xi 'an with Emperor Guangxu and his trusted servants. In the following months, Eight-Nation Alliance invaded the vast areas from Shanhaiguan in the east to Niangziguan in the west, Baoding in the south and Zhangjiakou in the north. The Japanese army participated in many "Crusades" against anti-imperialist armed forces such as the Boxer Rebellion near Beijing, Tianjin and Shanhaiguan.

The fall of Beijing marked that the anti-imperialist movement of the Boxer Rebellion was stifled by the joint forces of eight imperialists, and the Japanese army was the backbone of this joint force. From the battle of Tianjin in mid-July to the battle of Beijing in mid-August, the Japanese army not only invested the most troops, but also fought the hardest in this crucial month. Japanese robbers acted as pioneers and main forces in the whole process of Eight-Nation Alliance's armed invasion of China. Everywhere they went, they robbed, burned and raped crazily, which brought great disasters to the people of China. After Eight-Nation Alliance invaded Tianjin and Peking, it carried out inhuman burning, killing and looting. Japanese invaders slaughtered more than 2000 residents in Jijiazhuang, a suburb of Tianjin. After plundering 2 million taels of silver in Tianjin, they robbed 3 million taels of silver in Beijing, and then burned the yamen. After the Japanese invaders occupied the Qing palace, they plundered all the treasures and cultural relics in the palace.

190 1 year (September 7th of the China lunar calendar), the western countries forced the Qing government to sign the treaty of shame and humiliation. The contents include: punishing officials who "offend" the powers; Send princes and ministers to Germany and Japan to make amends; The Qing government explicitly prohibited China people from establishing and participating in various organizations to resist the invading army; The compensation is 450 million taels of silver, which will be paid in 39 years, with the principal and interest of 980 million taels of silver; Beijing Dongjiaomin Lane has an embassy district, where the state can station troops, but China people are not allowed to live. Destroy the Dagu Fort and the Fort from Beijing to Haikou and Tianjin; The state can station troops along the railway from Beijing to Shanhaiguan. The "Xin Chou Treaty" further destroyed China's sovereignty. In the embassy district of Beijing, the great powers stationed troops and became independent in administration, becoming a "country within a country". Foreign countries gained the right to station troops from Beijing to Shanhaiguan, which made China's Beijing pass wide open and there was no danger to defend. After the signing of the Xin Chou Treaty, China was completely reduced to a semi-colony.

According to the Treaty of Xin Chou, Japan stationed 400 soldiers in the embassy district and on the route from Beijing to Shanhaiguan. However, four months before the signing of the "Xin Chou Treaty", the Japanese government announced the establishment of the Qing garrison in the name of "protecting overseas Chinese" and "protecting roads" and appointed Lieutenant General Ono Oshima as the first commander. The headquarters is located in Tianjin Guang Hai Temple, and the barracks are located in Beijing Dong Jiao. Later, with the expansion of Japanese militarism's aggression against China, the number of Japanese troops stationed in the station increased. 19 12, the Japanese changed the name of "Qing Garrison" to "China Garrison". Because the army is stationed in North China, it is usually called "North China Guard".