My dad was called "Corporal Greengrass" in the RAF because he sang Inkspot Songs. My love of Folk Music came from all the Scottish Folk Songs his Scottish teacher sang to him in the 1920's eg Lizzie Lindsay and so he sang them to me in the 1950's and I still sing them now.
Another song from WW11 that he sang.

Won't you come to Abyssinia won't you come
Bring your own ammunition and a gun
Mussolini will be there throwing stink bombs in the air
Won't you come to Abyssinia won't you come.