Which wartime product innovation was specifically created for D-Day and featured revolutionary waterproof packaging that later revolutionized civilian consumer goods?

Throughout history, military campaigns have spawned unique merchandising opportunities. From propaganda posters to commemorative items, military history has created a fascinating retail niche. This poll explores how famous military campaigns intersected with product development and retail innovation, highlighting the commercial aspects that often go unnoticed when studying military history.

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K-Rations in waxed cardboard boxes
Waterproof paper maps with plastic coating
Waterproof watch cases by Rolex and Omega
The DD container (nicknamed 'Duck'): waterproof packaging for ammunition and medical supplies