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Recognition signal

From Wikipedia, the free encyclopedia
HMS Belfast (C35) using International maritime signal flags as a recognition signal

A recognition signal is a signal whereby a person, a ship, an airplane or something else is recognized. They can be used during war or can be used to help the police recognize each other during undercover operations.

War

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These signals are often used to recognize friends and enemies in a war.[1][2] For military use these signals often use colored lights or the International marine signal flags.

Police

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Other uses of the signal include the police who sometimes use a recognition signal so that officers in uniform can recognize officers in normal clothing (undercover).[3][4] The NYPD often use headbands, wristbands or colored clothing as recognition signals which are known as the "color of the day".[4]

See also

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References

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  1. ^ Commander-in-Chief High Sea Fleet (German navy. "German Navy Tactical Orders (Enemy Recognition Signals)". Retrieved 2009-02-18.
  2. ^ "Visual signals: Military communication without words". HPRC. Retrieved 2022-02-10.
  3. ^ James, George (24 August 1994). "Police Agencies Share Rules for Recognition". New York Times. Retrieved 2008-09-17.
  4. ^ a b Krauss, Clifford (24 August 1994). "Subway Chaos: Officer Firing at Officer". New York Times. Retrieved 2008-10-05.
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