A 1970 motion picture recounting the attack on Pearl Harbor by the Japanese during World War II, Tora! Tora! Tora! was at the time of its release the second most expensive movie ever made, just behind Cleopatra in actual cost. Based on the historic novels Tora! Tora! Tora! by Gordon W. Prange and The Broken Seal by Ladislas Farago, the film recounts what happened on both the American and Japanese sides. The title refers to the Japanese code word which signaled the launch of the attack.

The idea for making the film came from Elmo Williams, who was hoping for another financial triumph along the lines of The Longest Day. From the beginning it was planned as a film of monumental scale that would examine the events of Pearl Harbor in precise detail. A tremendous amount of research had been done by Dr. Gordon Prang...