The Pacific War was the largest naval conflict in history. Across the huge expanses of the Pacific Ocean, the two most powerful navies in the world found themselves locked in a death struggle. From the Arctic conditions in the Aleutians, to the appalling heat and swelter of the South Pacific, every conceivable type of naval activity was represented: carrier aviation battles, surface engagements, bitterly fought night-battles, the largest amphibious landings of the entire war and the stealthy, brutal battles waged by and against submarines.