[2] The words, intended to be without meaning, were added as security padding in an encrypted message to hinder Japanese attempts at cryptanalysis, but were mistakenly included in the decoded text given to Halsey.
At Bletchley Park, the Allies' codebreakers referred to these predictable elements as cribs, British schoolboy slang for a hidden cheat-sheet smuggled into a test or exam.
On October 20, 1944, United States troops invaded the island of Leyte as part of a strategy aimed at isolating Japan from the resource-rich territory it had occupied in South East Asia, and in particular depriving its forces and industry of vital oil supplies.
[8] When Nimitz, at CINCPAC headquarters in Hawaii, saw Kinkaid's plea for help he sent a message to Halsey, simply asking for the current location of Task Force 34, which due to a previous misunderstanding, was unclear:[7] Where is, repeat, where is Task Force Thirty Four?With the addition of metadata including routing and classification information, as well as the padding at the head and tail, the entire plaintext message to be encoded and transmitted to Halsey was: TURKEY TROTS TO WATER GG FROM CINCPAC ACTION COM THIRD FLEET INFO COMINCH CTF SEVENTY-SEVEN X WHERE IS RPT WHERE IS TASK FORCE THIRTY FOUR RR THE WORLD WONDERS[9]U.S. Navy procedure called for the padding to be added to the start and end of the message, which were vulnerable to cryptanalysis due to the use of common phrases and words (such as "Yours sincerely") in those sections.
In all the ships and stations that received the message, only the decoder on Halsey's flagship, USS New Jersey, failed to delete both padding phrases.
[13] The message (and its trailing padding) became infamous, and created some ill feeling, since it appeared to be a harsh criticism by Nimitz of Halsey's decision to pursue the decoy carriers and leave the landings uncovered.
Recognizing his failure, Halsey ordered his fleet south, however the chase north had exhausted the fuel of his light escorts and more time was wasted refueling while Taffy 3 (Task Unit 77.4.3, commanded by Rear Admiral Clifton Sprague) was fighting for its life.