Don't forget the Japanese did attack the Australian mainland. Dawin (Australia's northern most city) was bombed and Sidney harbour was attacked by mini submarines.

I have to disagree, I think it would have been imposible to retreat an Army into the Australian outback. There would be no way of getting enough water or food to feed an army with, let alone the effect of the heat.

But I do agree that maybe attacking the key cities would probably have forced Australia into surrender. That then would put New Zealand into the fight, and with our Army overseas I don't think we would have lasted long.

__________________
David

When you go home
Tell them of us, and say
For your tomorrow
We gave our today.