Trench codes (a form of cryptography) were codes used for secrecy by field armies in World War I. Messages by field telephone, radio and carrier pigeons could be intercepted, hence the need for tactical World War I cryptography. Originally, the most commonly used codes were simple substitution codes, but due to the relative vulnerability of the classical cipher, trench codes came into existence.
Trench codes (a form of cryptography) were codes used for secrecy by field armies in World War I. Messages by field telephone, radio and carrier pigeons could be intercepted, hence the need for tactical World War I cryptography. Originally, the most commonly used codes were simple substitution codes, but due to the relative vulnerability of the classical cipher, trench codes came into existence.
Source: Wikipedia "Trench code" · CC BY-SA 4.0
Share this article: X · Bluesky