Which operation included deception to mislead Germany about the date and location of the D-Day invasion?

• A. Operation Overlord
• B. Operation Sea Lion
• C. Operation Market Garden
• D. Operation Fortitude

Answer: (D)

The main idea here is how Allied forces used deception to shape German expectations about D-Day. The operation designed for that purpose was Fortitude. It was a broad deception plan aimed at misrepresenting both where and when the invasion would occur, convincing the German high command that the big assault would strike at a different location and even at a different time than the actual landing.

Fortitude South specifically projected that the invasion would hit Pas-de-Calais, using fake units, dummy landing craft and tanks, phantom radio traffic, and other tricks to keep German defenses concentrated there. In reality, the real landing happened in Normandy, on the date that was planned. The deception paid off by drawing German troops and resources away from Normandy, increasing the Allies’ chances of success.

The other options refer to real operations with different purposes. Operation Overlord was the actual Normandy invasion, not a deception plan. Operation Sea Lion was Germany’s planned invasion of Britain that never happened. Operation Market Garden was a separate Allied airborne and ground operation in the Netherlands. Fortitude is the one that fits the idea of misleading the enemy about date and location.