Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-signs-signals-80644594fcce

Why did armies like cipher wheels for secret messages?

They could easily change the secret code.

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  1. They could easily change the secret code ✔
  2. They were too heavy to steal
  3. They needed no operator

Why: Armies used similar devices because changing the key letter easily changed the code.

Huh, didn't know that: Armies used similar devices because changing the key letter easily changed the code.

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Change the key, change the code, keep the secret.
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References

Answer: They could easily change the secret code. Armies used similar devices because changing the key letter easily changed the code.

  1. Scouting America: Signs, Signals, and Codes www.scouting.org/merit-badges/signs-signals-and-codes
    Armies once used similar devices because they could easily change the secret code.
    Checked 2026-11-07.

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