In a nutshell, yeah, and it created problems years later.
Thalidomide is a great example of that. It was used commonly in the
1950's as a drug to prevent the effects of morning sickness in pregnant women until a startling number of birth defects were linked to it and it was withdrawn. Yet the effects of Thalidomide were known prior to this thanks to the Nazi's using the drug on human guinea pigs as part of their horrendous "medical research" experiments during WWII.The problem came about when deciding what to do with the results of the Nazi experiments once the war was over.
The Germans, in their methodical way, kept very detailed records of their research and it was clear to anyone who bothered to read it what those results were. Yet the question became an ethical one, in that do you profit from that research and use the information to your advantage or do you write it off as a horrific part of history and respect the victims by not making that information available?
The powers that be at the time chose the latter, with the result being that a generation of post war people were left ignorant of the problems resulting in thousands of victims that could have otherwise been avoided.
Probably, although I think near the end of the war when a state of anarchic mayhem existed in Germany you only had to fart into the wrong wind to be executed.
There was certainly a period where enough people who knew they were doing the wrong thing had the opportunity to get out relatively safely but chose not to.
Like Von Braun for example.