Why was Navajo code talkers effective?

Answer 1

The code itself was a very simple one. However, Navajo was spoken by very few people who were not Navajo and none of them lived outside the US. There were almost no books on the language published outside of the US. Navajo is very difficult for non Athabascan language speakers. Both the consonants and grammar and tones are hard for many people to say or hear. The code used Navajo as a basis but was not normal spoke Navajo so even if a Navajo member of the US Military was captured it would sound like nonsense. It was very easy for Navajo speakers to learn and translate into English. Therefore the could use open radio frequencies and decode the message much faster than other coding methods. This made it extremely useful to send messages to direct the attacks on islands across the Pacific against the Japanese. It is thought that without it some battle might not have been won at a important period in the war. In the Battle of Iwo Jima six code talkers sent 800 messages over two days with no errors.

The Japanese did capture a Navajo, Joe Kieyoomia, in the Philippines in 1942. However, when he reported he could not understand the code, instead of working with him and a cryptographer, in which case they probably would have been able to crack it, they tortured him instead and therefore got no useful information.

Answer 2

They were affected because they spoke with each other on what the Japanese were saying and when they were going to attack then also this started after the Pearl Harbor attack so when that maybe when they would've striked again they would know.