War can be a strange thing...

[Yorkshire pud]

http://www.bbc.co.uk/news/magazine-26963624

It's an irony that probably didn't go unnoticed by Choctaw soldiers fighting in World War One. While the tribe's children were being whipped for speaking in their native tongue at schools back home in Oklahoma, on the battlefields of France the Native American language was the much-needed answer to a very big problem.

[Juan]

Another way American telegraphers tried to thwart the Germans was by using railroad Morse code rather than International Morse Code.  With the railroad code (the original Morse code that was still used by railroad dispatchers) half the characters were different from International Morse.  Some of the characters had spaces within them, so that a C (IIRC) was .. (space) .  - In International morse, those dits would represent an "i" followed by an "e." Transcribing the railroad code was kind of intuitive and took a lot of experience to transcribe correctly.  I've never seen an article about this, but my grandfather was a WWI Signal Corpsman and told that story.