What drugs are given to a child in a war?

Sadly, its a common practice in warfare, not just for child soldiers... Methamphetamines being the most common, along with heroin, alcohol, and pot. Used to ease physical pain in order to get the most out of the solider, to improve physical capabilities, etc. But of course also used to create dependence, so the child has nowhere to turn but his commanding officer... During World War 2, such drugs were given to soldiers on both sides of the conflict, and were especially popular with bomber crews (long flights).