To coincide with the 70th anniversary of D-Day, Tom Briggs, from the Bletchley Park Trust, will be at Hornchurch Library
on Friday 6 June to tell the story of code breaking at Bletchley Park during World War II.
With the aid of a real Enigma machine, Tom will explain how German secret codes were broken at Bletchley Park during the Second World War, and talk about the incredible men and women who worked there.
The Enigma is an electro-mechanical device which scrambles a plain text message into a ciphered text. It was used to encipher and decipher messages during World War II and had 159 million million million possible settings.
It was invented by a German engineer at the end of the First World War. It was adopted by the German Navy and the German Army in the 1920s, and the German Air Force in the 1930s. The Enigma was also used by the railways and other government departments. From then and throughout the war, successive refinements were made to the machine.
A secret base was set up at Bletchley Park, a stately home 40 miles north of London, to intercept and break enemy military codes, where the code breakers were a group of scientists, mathematicians and chess-masters and worked on various projects.
It has been claimed that as a result of the information gained through this device, hostilities between Germany and the Allied forces were cut by two years.
To hear much more, book a place for the talk which starts at 6.30pm and includes refreshments and entry into a raffle. There is an entry fee of £10 for library members and £11 for non-members.
To book a place, call Hornchurch Library
on 01708 434903.