In June 1942, Japanese troops occupied the Aleutian islands of Attu and Kiska in Alaska, the first enemy occupation of US territory since the War of 1812. For the next year a bloody conflict raged that was nearly invisible to most North Americans as Canadian and American soldiers, airmen and sailors went north to hold the Japanese in check. This is the complete story of the war in the North Pacific, including details of: Japanese subs lurking off the west coast, sinking ships and shelling the coast of British Columbia; the submarine-launched airplane that bombed Oregon's forests; the surreal tale of balloon-bombs crossing the Pacific to North America.