WORLD HISTORY

Detailed explanation-1: -It is estimated that as many as 85% of the 91, 000 gas deaths in WWI were a result of phosgene or the related agent, diphosgene (trichloromethane chloroformate). The most commonly used gas in WWI was ‘mustard gas’ [bis(2-chloroethyl) sulfide].

Detailed explanation-2: -The United States apparently began equipping the South Vietnamese Army with two of its three standard riot control, or non-lethal, gases in 1962 under the existing Military Assistance Program (MAP). The agents were CN, the standard tear gas used to quell civil disorders, and CS, the newly developed super tear gas.

Detailed explanation-3: -Mustard gas, introduced by the Germans in 1917, blistered the skin, eyes, and lungs, and killed thousands. Military strategists defended the use of poison gas by saying it reduced the enemy’s ability to respond and thus saved lives in offensives.

Detailed explanation-4: -On April 22, 1915 at 5 p.m. a wave of asphyxiating gas released from cylinders embedded in the ground by German specialist troops smothered the Allied line on the northern end of the Ypres salient, causing panic and a struggle to survive a new form of weapon.