TheCodeBreakers
Or
the speakers may resort to a foreign language.
The United States raised the latter device to the level of a full-scale
system in both World Wars by making use of a resource that virtually no
other combatant had: pools of tongues so recondite that almost no one
else in the world understood them. These were the American Indian
languages, which are isolated both geographically and linguistically. In
1918, eight Choctaws of Company D, 141st Infantry, transmitted orders
by field telephone; this was the idea of Captain E. W. Horner, who named
Solomon Lewis as the chief of the detail. Other Indian tongues were also
used. During preparations for World War II, the Signal Corps tested
Comanches and Indians from Michigan and Wisconsin in war games, but
most of the codetalkers in the combat itself were Navaho. One reason
probably was that the tribe was large enough (more than 50,000 persons)
annaabi.ee 
