Question

Which tactic did General Douglas MacArthur use in the Pacific?

Answer 1

i believe it was the island hopping strategy

Answer 2

One of the largest aspects of the campaign was called island-hopping.  Rather than trying to take every single fortified island, the commanders in the Pacific identified each step that was necessary and bypassed some very heavily fortified bases knowing that they could control shipping lanes and other avenues of approach and basically starve out those garrisons rather than taking them on with costly invasions. :)