What is the Enigma Machine?

What is the Enigma Machine?

The Enigma Machine is basically a type of computer. 

An Enigma machine was a series of electro-mechanical rotor cipher machines developed and used in the early to mid twentieth century for commercial and military usage. Enigma was invented by the German engineer Arthur Scherbius at the end of World War I.

On 25 July 1939, in Warsaw, the Poles initiated French and British military intelligence representatives into their Enigma-decryption techniques and equipment, including Zygalski sheets and the cryptologic bomb, and promised each delegation a Polish-reconstructed Enigma. The demonstration represented a vital basis for the later British continuation and effort.