Chemical weapons in World War I volatile oily liquid. It was introduced as a vesicant by Germany in July 1917 prior to the Third Battle of Ypres. The Germans marked their shells yellow for mustard gas and green for chlorine and phosgene; hence they called the new gas "Yellow Cross". It was known to the British as "HS" ("Hun Stuff"), and the French called it "Yperite" (named after Ypres). Mustard gas is not an effective killing agent (though in high enough doses it is fatal) but can be used to harass and disable the enemy and pollute the battlefield. Delivered in artillery shells, mustard gas was
Kawasaki Army Type 92 Fighter Kawasaki Army Type 92 Fighter The Kawasaki KDA-5 was a Japanese single-seat biplane fighter designed by the German Dr. Richard Vogt for the Imperial Japanese Army. The KDA-5 was designed by Richard Vogt to meet a Japanese Army requirement for a fighter biplane. Five prototypes were built by Kawasaki Kōkūki Kōgyō K.K. and first flown in 1930. Following testing, the aircraft was ordered into production in 1932 as the Army Type 92 Model 1 Fighter. The aircraft had unequal-span sesquiplane wings and fixed tailwheel landing gear and was powered by a 470 kW (630 hp) BMW VI engine. After 180