Battle of Suixian-Zaoyang
1939 Chinese victory

The Battle of Suixian–Zaoyang, also known as the Battle of Suizao was one of the 22 major engagements between the National Revolutionary Army (NRA) and Imperial Japanese Army (IJA) during the Second Sino-Japanese War. The Japanese launched a major two-pronged offensive that captured many cities and towns. However, their failure to defend against a series of coordinated Chinese counter-attacks forced them to completely withdraw, resulting in territorial control returning to the original status quo.

Although the Japanese were initially successful in capturing many cities and towns, their inability to hold onto any of them resulted in their offensive operation ending in a complete failure. By the end of the battle, the Chinese Army had not only recaptured all positions, but also gained the ability to utilize mobilized warfare to launch counter-offensive into Japanese-held territory.