The Battle of Dachen Archipelago was a struggle between the Nationalists and the Communists for the control of several archipelagos just off the coast of Zhejiang, China, during the Chinese Civil War in the post-World War II era, and it was part of the First Taiwan Strait Crisis. The PLA targeted and eventually took the Dachen Archipelago, and the other two smaller archipelagos from Nationalists: the Southern Muntjac Archipelago and the Southern Deer Mountain Archipelago.