Introduction to the New Fourth Army: The New Fourth Army, the newly formed Fourth Army of the Chinese National Revolutionary Army, was gradually reorganized from the Red Army guerrillas in eight provinces and fourteen regions starting from October 1937. October 12 is the founding date of the army. anniversary. The commander of the New Fourth Army is Ye Ting, deputy commander Xiang Ying, chief of staff Zhang Yunyi, deputy chief of staff Zhou Zikun, director of the political department Yuan Guoping, and deputy director Deng Zihui. It has jurisdiction over 4 guerrilla detachments, 10 regiments, and 1 special agent battalion. Initially, a total of 10,329 people. During the War of Resistance Against Japanese Aggression, the New Fourth Army resisted and contained 160,000 Japanese troops and 230,000 puppet troops, engaging in more than 22,000 battles; it conducted more than 3,000 self-defense battles and annihilated more than 140,000 Kuomintang die-hard troops. Later, the army expanded to more than 310,000 people, and the militia and self-defense forces had more than 960,000 people. Eight anti-Japanese base areas were established, making important contributions to the victory of the Anti-Japanese War.