As the Imperial Japanese Army drove towards Wahan along the southern bank of the Yangtze River, it had to cross through well-defended Wanjialing. After capturing Jinjiang, the 106th Division continued along the railway in an attempt to break through at Deían, but Chinese reinforcements stopped the offensive with heavy losses at Shahe and began to surround the invaders. In an attempt to break the encirclement at Xingzi, the two battalions of the 101st Divisionís Sato Detachment launched a supporting attack on 21 August against fierce resistance from Wang Jongjiuís 25th Corps and Ye Zhanís 66th Corps. Unable to break through the Chinese lines via conventional methods, the Japanese resorted to deploying poison gas.
Attacker: Japanese (Sato Detachment, 101st Division)
Defender: Chinese (Elements of 25th Corps and 66th Corps)