薛岳
Japan made heavy use of chemical weapons against China to make up for its lack of numbers in combat and because China did not have any poison gas stockpiles of its own to retaliate. Japan used poison gas at Hankow in the Battle of Wuhan to break fierce Chinese resistance after conventional Japanese assaults had been repelled by Chinese defenders. Rana Mitter wrote, "Under General Xue Yue, some 100,000 Chinese troops pushed back Japanese forces at Huangmei. At the fortress of Tianjiazhen, thousands of men fought until the end of September, with Japanese victory assured only with the use of poison gas. Yet even now, top Chinese generals seemed unable to work with each other at Xinyang, Li Zongren's Guangxi troops were battered to exhaustion. They expected that the troops of Hu Zongnan, another general close to Chiang Kai-shek, would relieve them, but instead Hu led his troops away from the city." Japan also used poison gas against Chinese Muslim armies at the Battle of Wuyuan and the Battle of West Suiyuan.