 The most prominent example of this tactic was the successful defense of Changsha in 1939 (and again in 1941), in which heavy casualties were inflicted on the IJA.Local Chinese resistance forces, organized separately by both the communists and KMT, continued their resistance in occupied areas to pester the enemy and make their administration over the vast land area of China difficult.In 1940, the Chinese Red Army launched a major offensive in north China, destroying railways and a major coal mine.