Conversly by the same logic the Japanese were successful on all of their island stronghold scenarios because in each and every one the projected American timetables to secure them was thrown off large amounts.

Logistically Austrailia did present a real threat as a target of invasion. Hawaii was a damned long way to mount a serious invasion. There could be no possible, realistic supply line if a landing did occur.

Besides, if we look at Guadalcanal and the failure of the Japanese to conquer it I have no doubt that attempting the same on Hawaii would have been quite detrimental to the Japanese.

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