Trivia: As Oddball's Sherman tank rolls through a town, an old man gets up to look around the corner to observe the tanks passing through. After that scene, the old man had a heart attack and died immediately after. Donald Sutherland and members of the film crew tried to save him, but were unsuccessful. The film crew built the old man's coffin for his burial and the cast and crew raised money for his family. (01:30:00)
Trivia: The code for successful surprise (and the movie's title) "Tora! Tora! Tora!" was a shortening of the words totsugeki (attack) and raigeki (the Japanese term for torpedo bombers), and was originally spelled "To ra, to ra, to ra!" Those two shortened words were interpreted by American radio operators, who happened to intercept them, as the Japanese word for "tiger"; hence "Tora! Tora! Tora!"
Trivia: All the extras (there were rather a lot of them) were made up of Soviet soldiers.
Trivia: A bullet from a rifle Charlton Heston owned was the inspiration for the design of the Alpha-Omega Bomb.