Today I learned that "semaphore" does not only refer to the flag language. That is "flag semaphore", but all long distance visual communication apparatuses are technically semaphore devices.
Other forms of semaphore include visual morse (such as with a signal lamp), smoke signals, and the optical telegraph. It turns out, telegraphy is also an umbrella term for any form of long distance communication that doesn't involve passing a physical message to the recipient, of which the electrical telegraph is just one possible variant. I was wrong again!
I was very excited to learn that Japanese has its own semaphore alphabet. Googling "Japanese flag semaphore" led me very quickly to a site called "Axis Militaria" with listings for WWII artifacts. I didn't inve𐘇tigate further on my work computer but wtf?
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