while it mostly helped the jews (money, israel, demonizing local jewish resistance, etc), it did bring the usa out of the great depression and created the mic, rendering the us a technological superpower for the rest of the century. so plebs did actually get some net benefits. plus all the ww2 excess led to some great services on the cheap for citizens who wanted to take part.  also it thinned out a bunch of men, giving the men who survived a great chance at getting married and getting a education thanks to the gi bill. aka the fodder for creating the boomer generation. plus it was a great time to be a smart fuck - tons of military money to engineer really cool shit.
United States