"Tora! Tora! Tora!" primarily refers to the Japanese code phrase used during the attack on Pearl Harbor, as well as the critically acclaimed 1970 epic film dramatizing the event.
The phrase was the radio code signal used by Japanese pilots to indicate that . Literal Meaning : "Tora" means "tiger" in Japanese. Tora! Tora! Tora!
: Transmitted by Commander Mitsuo Fuchida at 7:53 AM on December 7, 1941, the signal informed the Japanese fleet that American defenses were unprepared. The 1970 Film Guide meaning " lightning attack ".
: It served as an abbreviation for totsugeki raigeki (突撃雷撃), meaning " lightning attack ". Tora! Tora! Tora!