When I first read the synopsis for Enterprise episodes, when I saw the Nazis I could only think "please, not again." It's my understanding that by the time of TOS' "Patterns of Force", Space Nazis were already a science fiction cliche. I was equally dismayed when Voyager's Hirogen wore Nazi uniforms. The Space Nazis of Star Trek might have fared better if their wardrobe had only resembled Nazi gear, rather than being straight from Western Costume Company.
And poor Skip Homeier suffered from typecasting through most of his career, after playing a Hitler Youth on Broadway (and film version) at age 13-14.