Results of the attack on Pearl Harbor Share The surprise bombing of the American naval harbor of Pearl Harbor on December 7, 1941 by the Japanese navy had many consequences, including its role in precipitating the United States' entrance into World War II. read more
President Roosevelt appointed the Roberts Commission, headed by U.S. Supreme Court Justice Owen Roberts, to investigate and report facts and findings with respect to the attack on Pearl Harbor. It was the first of many official investigations (nine in all). read more