Two small historical errors:
-July 1939, when Poland passed information to France and England, was not "when Poland fell" - war not even started yet,
-so, when Turing worked with problem in 1940, it was not "the rest of the world believes be unbreakable". Not the whole world.

The genius of Bletchley was that it had at least 3 certifiable geniuses plus a veritable host of extremely clever, resourceful, persistent expert multi-disciplinary specialist contributors (linguists, engineers, inventors, cross-word and game experts, mathematicians etc.) supported by superb staff and a genius-level administration. Take away any element and the edifice suffers, perhaps disastrously. It’s the whole structure that was genius, including the way Enigma- derived intelligence was used in practice - itself a feat of brilliant Co-ordination and organization.

Tommy never really got the recognition he deserved, but then he was not of the "Officer class".

The opening photo is not of Turing who had asthma and didn’t smoke. Treat whatever comes next with caution, most of it will be wrong.

Two things hit me like a shot.  The two first photos.  The hut was nothing like those at Bletchley Park.  Second shows a man at a desk in a room, it's implied that it is Turing, but he looks more like Gordon Ramsey.  Theres an ashtray full of tab ends, and a box of cigarettes labelled Players Navy Cut.  Turing didn't smoke, and Players Navy Cut were not filter tipped.  Reading through other comments I realised that indeed this was a pile of bollocks and have now blocked the channel.

Why do these history channels think that laying flashing marks over old photos will make them look even more authentic?

But the fact that no letter could show up as the same letter was known to the Polish  codebrakers for years before the war. This was no discovery of mr. Turing in 1940.

It should be remembered that Turing was hounded because he was a homosexual.

He didn't notice what was going on around him because of the depth of his concentration on the matter at hand.

The reason a letter could not be encoded to inself was not a "Mathimatical Certainty," whatever that is.  The reason is that the way the reflector board was designed the wiring did not allow for the input letter to also be the output letter.

How could they have rescued codebooks and drowned at the same time?

Interesting post.  At 9:48 the clip states the hull interior was only 5 feet in diameter.  I couldn't find references to confirm this.  I did find specs that gave the submarine pressure hull diameter as 4.7 meters.  The useable interior space will be less than this, but much more than 5 feet.

History doesn't give enough credit to the people who broke the codes.

Another flaw was that many messages ended with "heil Hitler". Good staring point.

HOW CHURCHILL'S CIGARS REACHED DRY LAND...........OH AND ALSO HELPED WIN WW2

In 2026, the average young person does not know the size of a typewriter, hs has possibly never seen one, The word processor or computer he uses is significantly smaller than a WW2 typewriter.

There were a few other flaws, none so basic as the interchangeable wheels had the letters in alphabetical order.  Had they been randomised, they may never have been decoded.  Read 'Station X' by Michael Smith.

The poles in poznan broke the enigma code in late 30s

Just to reiterate. That flaw was realized by Marian Rejewski at least 5 years before Turing had ever heard of Enigma. He and his colleagues used that, as well as the fact that the initial setting was transmitted twice to break Enigma.

And of course the fact that Enigma could not encode a letter to itself was not a mathematical impossibility. It was a feature of the construction of the machine, so a physical impossibility.

The Bombe generated possible initial settings not actual decrypts so obviously the staff operating them didn't know what was decrypted ... they had no access to the actual message intercepts.

Regarding the captured code books. They were traditionally called that, but actually they were just 3 sheets each with a month of initial settings.

British historians used to estimate that the Ultra shortened the war by two years. By now even they have lowered that estimate to one year. Meanwhile the less nationalistically biased concensus of non-British historians estimates it a at a few months up to at most six.

Still, this video is not as bad as many others. Only about half is false.

Please get RID of those fake speckle. They are utter crap