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
Type 726 LCAC Type 726 LCAC Type 726 LCAC (with NATO reporting name Yuyi class) is a class of air-cushioned landing craft used by the People's Liberation Army Navy. Six Yuyi-class LCACs are believed to be in service with the People’s Liberation Army (PLA), with the first one (3320) being seen at the end of 2007. It is thought that the vessels were delivered in two batches, with the first three LCACs reportedly powered by Ukrainian UGT 6000 engines, while the remaining three are believed to use the indigenous QC-70 gas turbines. Up to four Yuyi-class LCACs can be carried in the well