Shackle code
A shackle code is a
Rhodesian Army
.
It is specialized for the transmission of numerals.
Each of the letters of the English alphabet were assigned a numeric value.
A number could have several letters assigned.
The assignation was changed frequently and required the distribution of the codes to each party in advance.
When a party wanted to communicate a number, it radioed "SHACKLE" and it spelled out each digit (or combination of digits) using a word starting with the letter.
The end of the number was marked by the word "UNSHACKLE".
Alternatives
During World War II, the shackle codes took time to encode and decode, so during battle, sometimes troops radioed English
profanity
.
Navajo code talkers were also used as an alternative.[1]
See also
References
- Cox, Robert Jon. "Talk Between Ships". The Battle Off Samar: Taffy III at Leyte Gulf. Retrieved 7 October 2020. [better source needed]
- ISBN 978-0425244234.
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