World War 2 involved several key events. Japan bombed Pearl Harbor in an attempt to weaken the US military. Everyone carried gas masks in cardboard boxes to protect themselves from bombings. Spitfires were highly effective fighter planes used by Britain against Germany. Many children were evacuated from cities that were expected to be bombed by the enemy to shelters and homes in rural areas for their protection. Anderson shelters provided protection from air raids and bombings for civilians.