Lester Simpson rewrote the words to fit the first world war trenches for Coope Boyes and Simpson's, and some wonderful Belgian performers "Concert Party in Passchedaele" as

Good old General Haig had thirty thousand men
He marched them up to the Pilkem Ridge
And he marched them down again
And when they were up they were up
And when they were down they were down
But most of the time they were up to their balls
In a sea of liquid brown.

If it hadn't been attributed to Lester in the notes I'd have assumed it was a parody from the WW1 period itself.