Can someone help me w/ the lyrics and poss. melody of verse for this song...the refrain is something like:

"We fired our guns and they began a runnin' There wasn't nigh as many as there was awhile ago. We fired once more and they began a runnin' on down the Mississippi to the Gulf of Mexico!"

I think it's a Civil War ballad? I thought it was the Battle of New Orleans, but NOT... Thanks!