...Laffan's Plain, where they don't know sugar from tissue paper,marching orders, marmalade and(or?) jam.

There must be a whole generation of the sons & daughters of WW2 vets who were sung to sleep with such songs. It's strange to find this out in one's fifties. To me this song served as a slightly humorous lullaby, although we always knew it was part of Dad's army heritage.