皖南事变发生之前，新四军六个支队的司令员都是谁？

Core Points - The article discusses the formation and evolution of the New Fourth Army during the Second Sino-Japanese War, highlighting its significance in China's resistance against Japanese aggression [1][3][19] Group 1: Formation and Structure - The New Fourth Army was established in July 1937, during a critical period of the Chinese resistance against Japan, and was initially organized into four main detachments [1] - By July 1939, the army expanded to include a fifth detachment, and subsequently a sixth detachment was formed in February 1940, indicating continuous growth and restructuring [1][3] Group 2: Key Leaders and Contributions - The first detachment was led by Marshal Chen Yi, who played a crucial role in establishing significant anti-Japanese bases in the Jiangsu region and later held important positions in the new government [5] - General Zhang Dingcheng led the second detachment, known for his contributions during the land revolution and his leadership in guerrilla warfare [7][8] - General Zhang Yunyi commanded the third detachment and was recognized for his military achievements, eventually being awarded the title of General in 1955 [10][11] - The fourth detachment was initially led by Gao Jingtian, who was succeeded by Xu Haidong after Gao's wrongful execution; Xu was later honored as a General [13] - The fifth detachment was commanded by the legendary General Luo Binghui, who passed away in 1946 due to health issues from prolonged combat [15] - The sixth detachment was led by the versatile General Peng Xuefeng, who was both a military leader and a political worker, but he was killed in action in 1944 [17] Group 3: Legacy and Impact - The leaders of the New Fourth Army are remembered for their dedication and sacrifices, embodying the revolutionary spirit and resilience of the Chinese Communist Party [19]