Here is a brief snippet I learned from a friend who learned it from an ANZAC vet:

(tune Waltzing Matilda of course!)

Fightin' the Kaiser,
Fightin' the Kaiser,
Who'll come a-fightin' the Kaiser with me?
And we'll drink up all 'is beer,
And eat up all 'is sausages.
Who'll come a-fightin' the Kaiser with me?