Hoping to bring this with me to the Getaway, I was looking for more history on the lyrics Susan refers to above.A Yahoo search brought me right round to the Mudcat, and this old thread!
I learned this verse from the singing of Sweet Honey in the Rock. They, and many others, attribute this verse to Sojourner Truth:
"We are colored Yankee soldiers
>Who've listed for the war
>We are fighting for the Union
>We are fighting for the Lord
>We can shoot a rebel farther
>Than a white man ever saw
>As we go marching on."
Dani