It’s worth mentioning that German cryptologists had some considerable success cracking British codes as well, notably including the cyphers the Admiralty used to communicate with merchant ships in convoys during the first half of the war. This was a major factor behind Britain nearly losing the Battle of the Atlantic before they even had a chance to participate in the re-invasion of continental Europe in 1944.
It’s worth mentioning that German cryptologists had some considerable success cracking British codes as well, notably including the cyphers the Admiralty used to communicate with merchant ships in convoys during the first half of the war. This was a major factor behind Britain nearly losing the Battle of the Atlantic before they even had a chance to participate in the re-invasion of continental Europe in 1944.