In the second episode of our D-Day series, we look to the skies. In the build-up to Operation Overlord, thousands of Allied pilots in heavy bombers and fighter planes ground down the Luftwaffe and destroyed vital infrastructure. On D-Day itself, they supported their comrades on the ground and at sea in roles ranging from reconnaissance to close air support and dropped elite airborne units behind enemy lines.

To talk us through all of that aerial action, Dan is joined by James Daly, a historian, museum curator and author of 'Proposed Airborne Assaults During Operation Overlord'.

Produced by James Hickmann and edited by Dougal Patmore.

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