The second encirclement campaign against the Eyuwan Soviet was an encirclement campaign launched by the Chinese Nationalist Government against the Eyuwan Soviet, a Communist base located in the border region between Hubei, Henan, and Anhui provinces. The Fourth Red Army responded with its second counter-encirclement campaign and successfully defended the soviet. It lasted from April 1931 to July 1931.
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Text from the Wikipedia article “Second Encirclement Campaign against Hubei-Henan-Anhui Soviet”, available under CC BY-SA 4.0.