In 1945 a joint committee of the U.S. Senate and House of Representatives was appointed to investigate and hear testimony from a variety of military and civilian leaders about the attack on Pearl Harbor. Brought together here is a cross-section of the relevant testimony from the Congressional committee's 39-volume report. Witnesses recount events leading up to the war, American espionage efforts, the failure of radar, the penetration of the Japanese diplomatic codes, and the performance of the military.