<Li> June 3, 1942--Aleutian Islands Campaign, the battle for the then Territory of Alaska . </Li> <Li> June 21--22, 1942--Bombardment of Fort Stevens, the only attack on a U.S. military base on the U.S. mainland in World War II . </Li> <Li> September 9, 1942 and September 29, 1942--Lookout Air Raids, the only attack by enemy aircraft on the U.S. mainland in World War II . </Li> <Li> November 1944--April 1945--Fire balloons, over 9,300 of them were launched by Japan across the Pacific Ocean towards the U.S. mainland with the goal of starting forest fires . On May 5, 1945, six U.S. civilians were killed in Oregon when they stumbled upon a bomb and it exploded, the only wartime deaths to occur on the U.S. mainland as a result of enemy action . </Li>

How did american industry help the war effort