Documentation that he claimed to commit these atrocities or that he
actually performed the deeds?

Anything you have would be useful, thank you.

So, either or both.
Since you indicated in your previous post that you had read the
transcript of Kerrys speech I would think you would realize he had, in
fact, made that speech. If not, I'm sure you could do a Google search
and find the exact date and location. I have heard tapes of that
portion of his speech and believe it was made to a committee of either
the House or Senate in the early '70s. Since it's pretty obvious that
he made the comments the question is - did he commit the atrocities he
claimed or did he lie about them? Either way, I feel it shows a severe
lack of character and he is not one I feel is fit to lead this
country.