Where did This Machine Created Hard To Crack Codes In WWII appear in the Game?

It appeared on Past and Present Tech Group 1449 Puzzle 4

This Machine Created Hard To Crack Codes In WWII

CodyCross This Machine Created Hard To Crack Codes In WWII Solution

This question is part of CodyCross Past and Present Tech > Group 1449 > Puzzle 4.
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This Machine Created Hard To Crack Codes In WWII

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