...He stated that some time between 03 Feb thru 03 Mar 1945 — during the bitter urban fighting between American troops and a combination of Japanese naval base troops and three Imperial Japanese Army infantry battalions of the Shimbu Group — Japanese troops attacked troopers of the American 1st Cavalry Division with hand held and 75mm gun fired chemical munitions.
The Japanese crossed the chemical warfare threshold in World War 2.
1. Enemy Chemical Warfare Activities
The Jap Leyte garrison was prepared both Offensively and defensively for gas warfare when American forces landed. Munitions filled With tear gas (CN). vomiting gas (DC) and nerve poison (AC) were found in captured ammunition dumps. PWs stated that all unit from companies up were supplied with toxic munitions, including 75mm blistering gas (H or H-L) filled shells. Captured documents reveal that orders were issued in July 1944, to all troops in the LEYTE area to the effect that special smokes and other gas munitions would not be used without a special order and that in View or the Allies’ preparedness to resort to chemical warfare no excuse would be given them for retaliation. It may be inferred that a decision by the Japanese on whether or not to use gas will be based entirely upon strategical considerations.
To quote somebody, Damn!