During the War of Resistance Against Japanese Aggression, the war of aggression against China launched by Japanese imperialism brought very heavy casualties to the Chinese, with 35 million casualties and hundreds of millions of ordinary people displaced and homeless. However, during this period, the Eighth Route Army and the New Fourth Army carried out ideological reform of some captured Japanese officers and men, and many Japanese troops joined the anti-war alliance and cooperated with the Chinese army to fight against the Japanese aggressors.
After the victory of the War of Resistance, the northeast became a strategic place for the Kuomintang and the Communists. After the Soviet Red Army attacked the Kwantung Army, it captured more than 600,000 Japanese prisoners of war, and the Northeast Democratic United Army, later the Northeast Field Army, led by the Communist Party of China, also absorbed many Japanese prisoners of war. Most of these Japanese prisoners of war were later repatriated, but due to some special reasons, many Japanese were not repatriated.
Immediately after the end of the War of Resistance Against Japanese Aggression, Chiang Kai-shek launched a large-scale civil war, launching attacks on the major PLA armies of the People's Liberation Army and fighting against the people's army and the people in the Liberated Areas. At that time, the Northeast Field Army also urgently needed to develop and grow in order to cope with the attack of the Kuomintang Army, and at that time, China's education level was very low, a company could not find a few literate characters, a regiment may not even have a car, let alone open a tank, the use of various types of artillery, the upcoming large corps combat is very unfavorable, in order to improve the combat effectiveness of the troops, the Northeast Field Army targeted these Japanese prisoners of war.
At that time, the unit with the largest number of Japanese troops absorbed by the Northeast Field Army was the health department, and the field hospitals under the Higashino Health Department had 7,000 to 8,000 Japanese doctors and nurses. During the Liberation War, China's medical level was backward, once the two armies engaged in a large-scale war, there would be a large number of wounded, so they could only recruit these Japanese medical personnel and let them treat the Chinese soldiers, and Dongye also handed over many experienced Japanese doctors to other field armies, which was described in "Bright Sword", after Li Yunlong was injured, it was the Japanese doctors of Huaye Field Hospital who gave treatment.
The northeast had the largest heavy industrial facilities in China at that time, and there were many arsenals, although many of them were dismantled by the Soviet army, but the military industry department of the Northeast Field Army still restored many factories to survival. The military industry department of the Northeast Field Army also recruited more than 7,000 Japanese military personnel, many factory engineers, mechanics are Japanese personnel, after the founding of the People's Republic of China, there are many Japanese engineers in The Anshan Iron and Steel Plant. In addition, there are many trains in Higashino, and the drivers of the cars are also Japanese. In 1950, more than 800 Japanese railway technicians were sent to Gansu to build the railway from Lanzhou to Tianshui.
In addition to the logistics department, many of the schools in Higashino at that time were also Japanese, such as the Tohoku Old Aviation School, which incorporated the Li Yaichiro Department of the Fourth Coach Flying Brigade of the Second Aviation Regiment of the Japanese Kwantung Army, and most of the instructors and mechanics of the Tohoku Old Aviation School were Japanese, and the first batch of volunteer pilots, including Wang Hai, graduated from this school. There are also schools such as the Tohoku Artillery School, most of which are also Japanese personnel, and these Japanese technicians have played a great role in improving the technical and tactical level of Theato officers and men. Throughout the Liberation War, the Northeast Field Army successively absorbed more than 30,000 Japanese personnel.