I'm trying to find out the name of the tune with these lyrics. An older lady that grew up in Southwest VA, said her father used to sing it to her, but couldn't remember the name or any other lyrics.

I'll take my knapsack on my back and my rifle on my shoulder and march away to the mexican war and fight till the war's all over.

Coffe grows on white oak trees and rivers flow with brandy. The hills and the rocks all sparkle with gold. And the gals are sweeter than candy.

Thanks for the help, Matt