Many countries have done that, even in recent history. Wars to expand borders haven't happened in a long time by most large nations, but now it is done through intermediaries. For example 'volunteers' that fight for one side in a civil war and are incredibly well outfitted for 'volunteers'.
(probably belongs in another thread tho)
I read Carius's book, it was a good read and helped me see the conflict in a view I haven't had much experience with. Regardless, the stigma of the SS will haunt anyone who wore the uniform until the end of their days. This thread is a good example of that.