The Effects of Bletchley Park on the War
Source Based
It is believed that Bletchley Park helped shorten the war by one or
two years. Some people believed it had a big impact on the war, some
believed it did not.
In 1939, just as Bletchley Park was setting up, not much code breaking
was able to take place, so very little information was found out. From
source B, it agrees that “nothing would happen” as war had not even
been declared yet. People even believed that they “would all go back
to London.”
The first success came in 1941 when Bletchley Park finally broke the
Naval Enigma codes, and later that year broke the rest of the Enigma
codes. This was because they “were very, very departmentalised,” which
meant they worked very efficiently and everything was kept secret so
“nobody else had a clue what we were doing” so it made Bletchley even
more effective. More supplies could then get to Europe, until the Axis
navy added the fourth wheel to the Enigma machines to create the new
shark codes. It wasn’t until the end of 1942 that the codes were
re-broken, and the ambushes could be found again thus ending the
Battle of the Atlantic. This was helped by taking a copy of the Enigma