What was Myer's 'General Service Code' also known as?
Reference
OpenAI's Answer
Myer's "General Service Code" was also known as the "four element" code. This code was used for wig-wag signaling and was standardized in 1864 to facilitate communication between the Navy and Army during the American Civil War.
For more details, you can refer to the Wikipedia page on the Signal Corps in the American Civil War.
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