This is disgusting, but really not much different from how the Allies dealt with post-war Germany and especially Japan. A few Nazis got hung. Fewer Japanese. Plenty of guilty Nazis were put back in positions of power. Heck murdering German psychiatrists came to the USA to teach and practice. One great murdering Nazi who use slave labor was put in charge of US missile and space research. They were “good” Nazis don’t you know.
We shouda given Saddam’s military more leeway. Look at Iraq now.