Question

who were crazy horse's enemies?

Answer 1

In the Indian wars of the 1870s, Sioux tribesmen used a tactic against the United States Cavalry known as a “brave run” or a “dare ride.” An Indian warrior would gallop close to the American soldiers, drawing their fire. The purpose was partly practical — to get the soldiers to waste their ammunition — and partly psychological — to taunt.
HERE the Wed site for more hope this helps....
http://www.nytimes.com/2010/11/14/books/review/Thomas-t.html