From "The Enigma Machine", we can see that the information that supports the claim is:
Typing in messages was a boring task, so operators took shortcuts, like choosing three letters in a row or other simple, predictable patterns.
A claim is known as an argument which is seen as the main argument. Claims are seen to be true and are usually supported by use of evidences.
We can see here that to support the claim that German soldiers accidentally helped the Allies figure out the Enigma codes, we see the evidence here: Typing in messages was a boring task, so operators took shortcuts, like choosing three letters in a row or other simple, predictable patterns.
Learn more about claim on https://brainly.com/question/13628349