I read where shady contracting and supply practices occurred in the Civil and Spanish-American wars, so why wouldn’t it have happened in WWII?
Degradation of morals notwithstanding, and I in no way am justifying it, but I think it happens in every war.
I’m sure it does happen in every war - human nature remains pretty constant throughout history, but societal, religious and moral standards do fluctuate and impact the scope.
Also, it helps if there is at least some measure of oversight.