Get over it, we weren't at the heart of World War II

[Combat Wombat]

True true, and here we head into conjecture . After the conquest of New Guinea, would the Japanese left the practically empty top half of Australia alone or would they have 'expanded' into those areas ? Once in Port Morsby they would have been able to take their time to flatten Darwin and maybe moved on over to limit any Allied military precence there?

Maybe they would have sat in Port Morsby and enjoyed the view, but who knows ..

Another unproven legend was that of the "Brisbane Line" - in the face of invasion, the north of Australia, all that above a line drawn accross the country from Brisbane, would be abandoned to the Japanese ! unsure of that. What I have seen are those WWII era poster encouraging guerilla warfare against any invading forces. ...