Southern Jiangsu Campaign (Chinese: 苏南战役) was a 1945 series battle fought at the Southern Jiangsu and adjacent regions in Anhui and northern Zhejiang, and it was a clash between the communists and the former nationalists turned Japanese puppet regime force who rejoined the nationalists after World War II with their Japanese ally. The battle was one of the Chinese Civil War in the immediate post World War II era, and resulted in communist victory.