Hallucinogen and other narcotic gases were tested extensively in the 1940s-1960s. They were found to be extremely unpredictable as to the areas they affected, w

Hallucinogen and other narcotic gases were tested extensively in the 1940s-1960s. They were found to be extremely unpredictable as to the areas they affected, which varied with wind, and dosages delivered to combatants. Their ability to neutralize combatants is limited compared to a lethal tactic, such as the chemical gases employed in Syria by Russia and allies. [1] Russia has employed narcotic gases to deal with terrorist situations before, with significant casualties. [2] [1] https://en.wikipedia.org/wiki/Ghouta_chemical_attack https://en.wikipedia.org/wiki/Ghouta_chemical_attack [2] https://en.wikipedia.org/wiki/Moscow_theater_hostage_crisis https://en.wikipedia.org/wiki/Moscow_theater_hostage_crisis