Perhaps there might have been some British pressure on the US to help defend Australia.
I'm thinking and perhaps the British & US high commands were that if Japan got Australia the lines of communication for the British from the Indian Ocean into the Pacific would be cut.
It would be darn tricky for Britain to ever operate in the Pacific without Australia as a foot hold, remember she had lost the impregable (yeah right!) Singapore and Hong Kong.
She had nothing left to base her fleet or aircraft from in that theatre of operations (even if on the defensive at this stage of the war).
It would be hard to base her fleet at Addu Atoll, or Trincomlee or within an existing USN base (as this would put extra strain on the US's infrastructure some of which might not be compatable) and then have to operate out into the Pacific from there.
Especially so when you consider the Royal Navy's lack of a fleet train, lack of replenishment training, less endurance and higher fuel burning than the USN on the whole.
Thus Britain may have been pushing for the USA to help defend Australia for her own interests later in the war.
The only downer to this is King was not pro-British, rather the opposite on occasions.
But then again he could have been ordered to do this by his superiors or had his ear bent?
Another idea could be that the US high command felt a duty to help out as Britain was left with scant resources to help out Australia herself when she was being tied down in the Atlantic, Med and fighting a land war in North Africa. Thus if fell to the US to do her bit to help out a Commonwealth nation who contributed cruisers to American task forces later on, maybe again partly for political reasons?
Another difference is one I cannot fully answer, what in strategic value was Australia over the East Indies?
What natural resources or infrastructure are more important to defend in Australia?
Correct me if I'm wrong, as I'm sure someone on here will, but wasn't Australia used for land bombing operations later on in the war, on the Dutch Oil Refinies?
Again could this have been a political consideration back in 1941?
Or what about its use as a submarine base and also its dockyard facilities and oil storage, was it worth defending?
Of course you might just be looking for something which isn't there and over the following months when the US decided to defend Australia they realised they made mistake with the East Indies and they were not going to make the same mistakes twice?
I for one think its more a political and geographic change of policy, though I could be mistaken.
P.S. ar further to our conversation, 41 RN Destroyers involved, 23 damaged and 6 were sunk (4 air attack/2 E-boats)

Perhaps there might have been some British pressure on the US to help defend Australia.
I'm thinking and perhaps the British & US high commands were that if Japan got Australia the lines of communication for the British from the Indian Ocean into the Pacific would be cut.
It would be darn tricky for Britain to ever operate in the Pacific without Australia as a foot hold, remember she had lost the impregable (yeah right!) Singapore and Hong Kong.
She had nothing left to base her fleet or aircraft from in that theatre of operations (even if on the defensive at this stage of the war).
It would be hard to base her fleet at Addu Atoll, or Trincomlee or within an existing USN base (as this would put extra strain on the US's infrastructure some of which might not be compatable) and then have to operate out into the Pacific from there.
Especially so when you consider the Royal Navy's lack of a fleet train, lack of replenishment training, less endurance and higher fuel burning than the USN on the whole.
Thus Britain may have been pushing for the USA to help defend Australia for her own interests later in the war.
The only downer to this is King was not pro-British, rather the opposite on occasions.
But then again he could have been ordered to do this by his superiors or had his ear bent?
Another idea could be that the US high command felt a duty to help out as Britain was left with scant resources to help out Australia herself when she was being tied down in the Atlantic, Med and fighting a land war in North Africa. Thus if fell to the US to do her bit to help out a Commonwealth nation who contributed cruisers to American task forces later on, maybe again partly for political reasons?
Another difference is one I cannot fully answer, what in strategic value was Australia over the East Indies?
What natural resources or infrastructure are more important to defend in Australia?
Correct me if I'm wrong, as I'm sure someone on here will, but wasn't Australia used for land bombing operations later on in the war, on the Dutch Oil Refinies?
Again could this have been a political consideration back in 1941?
Or what about its use as a submarine base and also its dockyard facilities and oil storage, was it worth defending?
Of course you might just be looking for something which isn't there and over the following months when the US decided to defend Australia they realised they made mistake with the East Indies and they were not going to make the same mistakes twice?
I for one think its more a political and geographic change of policy, though I could be mistaken.
P.S. ar further to our conversation, 41 RN Destroyers involved, 23 damaged and 6 were sunk (4 air attack/2 E-boats) :big_grin: