Q,

"...I wish I could remember the parodies my father picked up during WW1..."

Possibly:

Kaiser Bill's only got one pill
And the Crown Prince, He's gone Barmy
And we don't give a F*ck for old von Kluck
And all his bleedin' army

(von Kluck was one of the German Army commanders in the Invasion of Belgium * France in 1914)

W