The War of Resistance Against Japan (War of Resistance Against Japan), internationally known as the Second Sino-Japanese War, was a national, all-out war of Chinese resistance to Japanese aggression in the mid-20th century during the Second World War. It lasted eight years, from the July 7 Incident in 1937, when the national government issued the "Letter to All Generals," to 1945, when Japan announced its surrender, and is known as the Eight-Year War of Resistance, or simply the War of Resistance.
In 1931, after the September 18th Incident, the Japanese army invaded China, completely occupied northeastern China and set up the pseudo-Manchukuo state, and since then, it has been provoking war conflicts in northern China, Shanghai and other places, and the national government has adopted a policy of compromise to avoid the expansion of the conflict.
July 7, 1937, the Japanese army provoked the Lugouqiao Incident near Peking, and the war between China and Japan broke out.
In the early stages of the war, China invested a large number of troops to contain the Japanese attack; then the two warring sides turned into a stalemate, and the forces behind the enemy lines under the leadership of the Chinese ****production party gradually developed and grew, and after Japan started the Pacific War on Dec. 7, 1941, the U.S. Roosevelt administration formally declared war on Japan, and the Chinese theater of operations became one of the main battlegrounds of the World War II (abbreviated as the Second World War).
On Aug. 15, 1945, Japan unconditionally surrendered to the Allies. The War of Resistance against Japan inflicted huge losses of people and property on China, but the concept of nationhood of the people was strengthened in the course of the war, and the victory in the war greatly improved China's position on the world stage.