Which supply chain innovation, later adopted by civilian retail, was first widely implemented by the US military during WWII to efficiently track and distribute equipment and supplies?

Throughout military history, supply chain innovations have often decided the outcomes of major conflicts. From Alexander the Great's logistics systems to modern military procurement, the evolution of supply chains has transformed warfare. This poll tests your knowledge about a critical supply chain innovation that changed the course of World War II and influenced retail supply chain management principles for decades to come.

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Standardized shipping containers
Universal Product Code (barcode system)
SKU (Stock Keeping Unit) inventory management
Just-in-time delivery system