 The Nationalists committed their strongest divisions in early battle against the Japanese (including the 36th, 87th, 88th divisions, the crack divisions of Chiang's Central Army) to defend Shanghai and continued to deploy most of their forces to fight the Japanese even as the Communists changed their strategy to engage mainly in a political offensive against the Japanese while declaring that the CPC should "save and preserve our strength and wait for favorable timing" by the end of 1941.Today, the war is a major point of contention and resentment between China and Japan.The war remains a major roadblock for Sino-Japanese relations.