Code talkers were Native American Marines serving in the United States Armed Forces who primarily transmitted secret tactical messages. The Code Talkers transmitted these messages over military telephone or radio communications nets using formal or informally developed codes built upon their native languages. Their service was very valuable since codes can be broken, but languages must be studied for a long time before being understood.
The name code talkers is strongly associated with bilingual Navajo speakers specially recruited during World War II by the Marines to serve in their standard communications units in the Pacific Theater. Code talking, however, was pioneered by Choctaw Indians serving in the U.S. Army during World War I. These soldiers are referred to as Choctaw code talkers.
Other Native American code talkers were deployed by the United States Army during World War II, including Cherokee, Choctaw, Lakota Meskwaki, and Comanche soldiers. Soldiers of Basque ancestry were used for code talking by the U.S. Marines during World War II in areas where other Basque speakers were not expected to be operating.