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History glossary

Operation Fortitude

the Allied deception operation that helped convince Germany the main invasion would come away from Normandy.

Category
Military deception
Region
Western Europe
Date range
1944

What it means

Operation Fortitude was a major Allied deception effort before and after D-Day. It used false signals, dummy formations, controlled intelligence, and plausible threats to mislead German command about where the main invasion would fall.

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