S1, E1: The Pacific Ocean is also known as “The Peaceful Sea,” and color footage of some of its remote American outposts taken in the late-1930s captures a world of fun and sun. But a wave of war will soon replace these serene scenes with images of cataclysmic horror. Through rarely seen color home movies and combat footage, we detail Japan’s violent blitz of the Pacific—from its raid on China to its attacks on Pearl Harbor and Australia—and show how America’s military raced to ready itself for battle.