Anyone have slight variations on the traditional song "Two Brothers" -- the Civil War song also called One Wore Blue and One Wore Gray? Also has anyone ever heard a choral arrangement of this piece, and if so, where can I get it/ hear it?

I am considering writing a choral arrangement of this song, and am interested in any minutiae related to the lyrics, the melody, the history of the song, other arrangements etc to enrich my process. I learned the song from Ray Frank (his version has a few minor departures from what is printed on the digitrad).

Thanks! Laura