the general Australian perception is that the only thing NZ supplied were a couple of initials to make the acronym flow better.
As in 'ANZAC? With no Kiwis? Aac!'
(Note to all citizens of my adopted country - this is meant purely as a joke! )

On the more serious question of Oz / Zild participation in the world wars, can anyone tell me whether either country had conscription in either war?