Which WWII military equipment packaging innovation later revolutionized civilian retail product packaging and supply chain management?

Throughout military history, the packaging and distribution of equipment has been crucial to battlefield success. From World War II to modern conflicts, innovations in product packaging have evolved to meet the demands of warfare. This poll tests your knowledge about a significant packaging innovation that revolutionized military supply chains and later influenced civilian retail packaging techniques. See if you can identify which wartime packaging breakthrough became a standard in modern retail.

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K-Ration cardboard boxes with wax coating
Standardized wooden ammunition crates with metal reinforcements
Palletized unit load system with shrink wrapping
Hermetically sealed tin containers for medical supplies