How Was Poison Gas Developed In WW1?
How Was Poison Gas Developed In WW1? By 1917, chemical shells, projectors, and mortars could deposit dense gas barrages on enemy lines, or behind them on supply routes, reserve trenches, or gun batteries. Phosgene, introduced in late 1915, was nearly invisible and much more lethal than chlorine. What caused gas in ww1? It is estimated