Both sides were using shitloads of amphetamines in WW2, but Germany and Japan were big fans of methamphetamine while the Allies preferred amphetamine sulfate. I've heard David Nutt argue that these choices may have actually played a non-trivial role in the outcome of WW2. Because amphetamine sulfate lasts 5-6 hours instead of meth's 10-12 hours, when Allied soldiers got back from missions the drugs had worn off and they could get some sleep, but the Germans and Japanese would still be spun up for hours after which compounded over time into serious chronic sleep loss.
Adderall is composed of equal parts racemic amphetamine and dextroamphetamine. Provigil/modafinil is also extremely popular in those cohorts, but an entirely different class of drug.
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