Complex sentence: The Battle of Wuyuan (March 16-April 3,1940) was a counterattack that defeated the Japanese invasion of the Wuyuan area in reaction to the Chinese 1939-40 Winter Offensive in Suiyuan during the Second Sino-Japanese War.
Split into simpler sentences: The Battle of Wuyuan (March 16-April 3,1940) was a counterattack that defeated the Japanese invasion of the Wuyuan area. The in reaction to the Chinese 1939-40 Winter Offensive in Suiyuan during the Second Sino-Japanese War.