Tora, Tora, Tora was the Japanese code for maximum
success in surprising the U.S.
Tora, Tora, Tora was Japanese code
word to signal the beginning of
the attack at Pearl Harbor 1941.
The "tora" is the two-syllable Japanese codeword used
to indicate that complete surprise had been achieved: "to" is the
initial syllable of "totsugeki,
meaning "assault", while "ra" stands for "raigeki, meaning "torpedo
attack".