Here's my best attempt. I have put my new words in boldface, and the words I am most doubtful about in brackets.

The tune, by the way, is DARKTOWN STRUTTER'S BALL (approximately).


I'LL BE DOWN ON THE LAST BREAD WAGON
As sung by Lead Belly on "Lead Belly's Last Sessions"

I'll be down on the last bread wagon.
I'll be there [with the head] in my hand.
When the boys goes to no man's land,
I'll be there, but I won't be fighting.
I'll be there [with the] shotgun shells.
I won't be fighting, but I'll be runnin' like hell.
When the boys goes over the top[-up],
And they're kickin' down the eagle rock,
I'm gonna beat 'em to the dugout, to dodge those shotgun shells.

I got sad news, honey. (boom boom boom)
Let me take you to the dancin' hall. (boomboomboom)
Everything is sad but it's fair,
And all the soldiers will be there.

REPEAT FIRST PART.