The Changde Chemical Weapon Attack refers to the Japanese chemical/biological attacks during the Battle of Changde, in the Chinese Province of Hunan during April and May 1943 Chemical warfare is warfare (and associated military operations) using the toxic properties of chemical substances to kill, injure or incapacitate the enemy. ... Hi KaceyBiological hi warfare, also known as germ warfare, is the use of any organism (bacteria, virus or other disease-causing organism) or toxin found in nature, as a weapon of war. ... The Battle of Changde (Traditional Chinese: 常德會戰; Simplified Chinese: 常德会战; pinyin: ) was a major engagement in the Second Sino-Japanese War. ... Hunan (Chinese: 湖南; pinyin: ) is a province of China, located in the middle reaches of the Yangtze River and south of Lake Dongting (hence the name Hunan, meaning south of the lake). Hunan is sometimes called 湘 (pinyin: Xiāng) for short, after the Xiang River which runs through the province. ... April is the fourth month of the year in the Gregorian Calendar and one of four with the length of 30 days. ... This article is about the month of May. ... 1943 (MCMXLIII) is a common year starting on Friday. ...

In the intense fighting around Changde, Japanese forces could not punch through the heavy Chinese resistance, and decided to launch poison gas artillery shells into the city area, inflicting massive civilian casualties. The shells possibly contained mustard gas or lewisite, chemical agents used in regular combat by Japanese forces. They also spread bubonic plague within a 36-km radius around the city. However, the Japanese did not achieve their objective, as the Chinese defenders put up more resistance in the following days after receiving reinforcements from the Chinese army and forced the Japanese to retreat. We dont have an article called Changde Start this article Search for Changde in. ... Early detection of chemical agents Sociopolitical climate of chemical warfare While the study of chemicals and their military uses was widespread in China, the use of toxic materials has historically been viewed with mixed emotions and some disdain in the West (especially when the enemy were doing it). ... Chemical Structure of Mustard Gas Compound Mustard gas (HD) is a chemical compound that was first used as a chemical weapon in World War I. In pure form, it is a colorless, odorless, viscous liquid at room temperature and causes blistering of the skin. ... Chemical structure of Lewisite Lewisite is a chemical compound from a chemical family called arsines. ... Bubonic plague is an infectious disease that is believed to have caused several epidemics or pandemics throughout history. ... The National Revolutionary Army (NRA) (Chinese: 國民革命軍; pinyin: guo2 min2 ge2 ming4 jun1) was the national army of the Republic of China. ...

Japanese units, furious over their defeat, decided take revenge and burned the city when they retreated, massacring the local population. The Chinese then retook the city and liberated some prisoners.

This is an example of the chemical/biological warfare conducted by the Japanese during the Second Sino-Japanese War, the works of Unit 516. This and other units also used assorted types of chemicals in liquid or gaseous form, like mustard gas, lewisite, cyanic acid gas and phosgene in experimental and some operational uses during hostile actions against local population and Chinese forces. This was done in order to spread fear, terror and death, to devastating effectiveness in both humans and livestock. Combatants National Revolutionary Army, Republic of China Imperial Japanese Army, Empire of Japan Commanders Chiang Kai-shek, Yan Xishan, Feng Yuxiang, Zhu De,He Yingqin Tojo Hideki, Matsui Iwane, Minami Jiro,Kesago Nakajima,Toshizo Nishio,Neiji Okamura. ... Unit 516 was a top secret Japanese chemical weapons facility, operated by the Kempeitai, in Qiqihar (齊齊哈爾), China. ... A chemical substance is any material substance used in or obtained by a process in chemistry: A chemical compound is a substance consisting of two or more chemical elements that are chemically combined in fixed proportions. ... Chemical Structure of Mustard Gas Compound Mustard gas (HD) is a chemical compound that was first used as a chemical weapon in World War I. In pure form, it is a colorless, odorless, viscous liquid at room temperature and causes blistering of the skin. ... Chemical structure of Lewisite Lewisite is a chemical compound from a chemical family called arsines. ... Cyanic acid is a colourless poisonous liquid with a boiling point of 23. ... Phosgene (also known as carbonyl chloride, COCl2) is a highly toxic gas or refrigerated liquid that was used as a chemical weapon in World War I. It has no color, but is detectable in air by its odor, which resembles moldy hay. ...