<Li> 1941--1945 Mostly during a period known as the "Second Happy Time", numerous American warships and merchant vessels sunk in American territorial waters by German U-boats . </Li> <Li> 1942--1943 World War II Battle of the Aleutian Islands in Alaska . </Li> <Li> 1944--1945 Fire balloon bombing of the US by Japanese balloon bombs: six civilians killed, minor damage inflicted . </Li>

When was the last war fought on us soil