I'm pretty sure it was used by the ancient inhabitants of India as well. I've seen Hindu holy books and such with a swastika inside the cover or on the front, in some older editions. I guess that doesn't happen anymore, with political correctness and all. They used it in ancient Teutonic regions too - Thor's hammer. I think it's kind of a universal Solar symbol. Might be worth pointing out Hitler's version, by the position of the arms, was turning counterclockwise. every version I've ever seen in a book on mythology or anthropology or such was turning clockwise.
"War's good business, so give your sons
But I'd rather have my country die for me" ~ Grace Slick, Rejoyce 1967