What was a key benefit of using Navajo as a code during World War II?

Using Navajo as a code during World War II provided significant advantages due to its inherent complexity. The language features unique phonetics and grammar, as well as a rich vocabulary that is not similar to any mainstream languages. This complexity was crucial because it created a cryptographic barrier, making it difficult for enemy forces to intercept and translate military communications effectively.

The Navajo code was also developed into a structured system of code words for military terms, which enhanced its security, as even if the language was recognized, the coded messages were challenging to decipher without prior knowledge of the code. Thus, this complexity ensured that sensitive information could be communicated securely and quickly among American forces, contributing significantly to military success.