He transmitted a second order on September 11 authorizing the deployment of special chemical warfare units to Shanghai .
Prince Kan'in transmitted to the Army the emperor 's first directive ( rinsanmei ) authorizing the use of chemical weapons on July 28 , 1937 .
Prince Kan'in transmitted a second order on September 11 authorizing the deployment of special chemical warfare units to Shanghai .
Prince Kan'in transmitted to the Army the emperor 's first directive ( rinsanmei ) authorizing the use of chemical weapons on July 28 , 1937 .