You must mean the Aleutian Islands that extend from Alaska's southwest out toward the northern Pacific Ocean. They are a string of island that were invaded and for a time occupied by Japanese forces during World War II. They extend for over a thousand miles if all are taken into account a distance equal to that of San Diego to Atlanta. The US Army Air Corps, US Navy, and the US Army finally regained control of them by August 1943 expelling all Japanese forces. Weather conditions were extremely devestating especially as the campaign started. Many of the casualties incurred there were weather related.