A WWII U.S. intelligence report on Japanese chemical weapon markings, from Tactical and Technical Trends, No. 39, December 2, 1943. [DISCLAIMER: The following text is taken from the U.S. War Department publication Tactical and Technical Trends. As with all wartime intelligence information, data may be incomplete or inaccurate. No attempt has been made to update or correct the text. Any views or opinions expressed do not necessarily represent those of the website.]

JAPANESE MARKINGS ON CHEMICAL MUNITIONS A list of the Japanese markings on chemical munitions has recently been obtained. The marking scheme agrees with previous reports except in the case of the marking for systemic poisons such as hydrocyanic acid. An extract from the translated document follows: Lung Irritants . . . . Blue agent . . . . Phosgene Lacrimators . . . . Green agent . . . . Chloracetophenone Sternutators . . . . Red agent . . . . Diphenylcyanar sine Vesicants . . . . Yellow agent . . . . Yperite Direct Poisons . . . . Brown agent . . . . Hydrocyanic Acid.

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