What is Code name?
{{nosources | date = {{CURRENTMONTHNAME}} {{CURRENTYEAR}} }}[[File:Mata Hari Grietje Zelle.jpg|thumb|Margaretha Geertruida Zelle used the [[stage name]] [[Mata Hari]] and the code name H 21 when she worked for German Intelligence. ]] A '''code name''' is a secret name used to refer to a name, word, project or person. [[Spies]] are often referred to by their code name to make discovery more difficult. Code names may also be used in [[industrial espionage]] to protect secrets from business rivals. Secrecy is not the only reason for their use. Standard words and phrases are easier to hear on radio channels like [[walkie-talkie]]s. Code names became numerous in World War II. Names like [[Operation Barbarossa]] and [[Operation Overlord]] and the [[Manhattan Project]] became famous. == References == <references /> {{Personal names}} [[Category:Names]] [[Category:Espionage]]