LGBT tale, not really history, but interesting anyway.

Rating: 6/10 (15 January 2017)

This is more a story about 'Rainbows' than about decryption technology.
Important events such as the first Bomba's developed in 1938 by Polish Cipher Bureau cryptologist Marian Rejewski and colleagues Henryk Zygalski and Jerzy Różycki were ignored, as were the contributions of the vast staff of Bletchley Park and related organizations.
Turing's role was formidable, but only part of the secret intelligence war that produced 'Ultra'. This is not a war history film, it is an oversimplified biography of Turing, a much more complex individual than the one depicted by actor Benedict Cumberbatch. Nonetheless, Cumberbatch did a very credible performance despite the limitations of his script.