How Many Times Did Japan Bomb the U.S. Mainland During WWII?

The only direct bombing of the continental United States by Japanese forces in World War II was the attack on Pearl Harbor, Hawaii, on December 7, 1941. However, Japanese forces also struck multiple U.S. territories in the Pacific, including the Philippines, Guam, Wake Island, and the Aleutian Islands (Attu and Kiska). These territorial attacks were part of a broader offensive but did not target the mainland itself.