The Battle of Changde (Battle of Changteh; simplified Chinese: 常德会战; traditional Chinese: 常德會戰; pinyin: Chángdé Huìzhàn) was a major engagement in the Second Sino-Japanese War in and around the Chinese city of Changde (Changteh) in the province of Hunan. During the battle, the Imperial Japanese Army extensively used chemical weapons. The purpose of the Japanese offensive was not to hold the city but to maintain pressure on the Chinese National Revolutionary Army to reduce its combat ability in the region and its ability to reinforce the Burma Campaign.