Yes he did actually. Don't pay much attention to the news, eh?
He never said he did that. Read what he said more carefully.
There are all kinds of atrocities, and I would have to say that, yes, yes, I committed the same kind of atrocities as thousands of other soldiers have committed in that I took part in shootings in free fire zones. I conducted harassment and interdiction fire. I used 50 calibre machine guns, which we were granted and ordered to use, which were our only weapon against people. I took part in search and destroy missions, in the burning of villages. All of this is contrary to the laws of warfare, all of this is contrary to the Geneva Conventions and all of this is ordered as a matter of written established policy by the government of the United States from the top down. And I believe that the men who designed these, the men who designed the free fire zone, the men who ordered us, the men who signed off the air raid strike areas, I think these men, by the letter of the law, the same letter of the law that tried Lieutenant Calley, are war criminals.
Kerry never said he took part in beheadings. He did say he took part in the burning of villages and other atrocities. He did say he acted contrary to the 'laws of warfare" and the Geneva convention. A shorter way of saying that is war crimes.
http://hnn.us/articles/3552.html