Enigma Timeline

1918

First Enigma Machine

Arthur Scherbius patents the first Enigma machine, originally designed for commercial use.

First Enigma Machine
1923

Enigma in use (Bundesarchiv)

The first commercial Enigma machine is produced by Scherbius & Ritter.

Enigma in use (Bundesarchiv)
1932

Plugboard of an Enigma machine

Polish mathematicians Marian Rejewski, Jerzy Różycki, and Henryk Zygalski begin breaking Enigma codes.

Plugboard of an Enigma machine
1932

Polish Mathematical Breakthrough

Marian Rejewski, Jerzy Różycki, and Henryk Zygalski revolutionize cryptanalysis with mathematical theory.

Polish Mathematical Breakthrough
1933

Enigma's Mechanical Design

The complex mechanical design of the Enigma machine is fully understood and documented.

Enigma's Mechanical Design
1939

Bletchley Park Setup

The British Government Code and Cypher School moves to Bletchley Park.

Bletchley Park Setup
1940

Turing's Bombe

Alan Turing and Gordon Welchman develop the Bombe machine to break Enigma codes.

Turing's Bombe
1941

Naval Enigma Broken

The British successfully break the Naval Enigma code, a major breakthrough in the war.

Naval Enigma Broken
1941

Battle of Cape Matapan

A decisive naval victory made possible by breaking Italian naval codes at Bletchley Park.

Battle of Cape Matapan
1945

War End and Legacy

The war ends, and the work at Bletchley Park remains classified for decades.

War End and Legacy