[sergeantdave]

Recordings of a rebel yell -

http://www.smithsonianmag.com/video/What-Did-the-Rebel-Yell-Sound-Like.html

[Fiji Hill]

Recordings of a rebel yell

That was fascinating. Imagine being a Yankee soldier in the front lines and hearing that sort of yell coming from 15,000 enemy soldiers advancing toward you.