Which retail supply chain innovation, first widely implemented by the U.S. military during the Vietnam War, revolutionized inventory tracking and later became standard in civilian retail stores worldwide?

Throughout military history, retail supply chain management has played a crucial but often overlooked role in determining battlefield outcomes. From Napoleon's famous quote that 'an army marches on its stomach' to modern military logistics, the ability to efficiently source, transport, and distribute supplies has shaped warfare across centuries. This trivia question explores a revolutionary retail supply chain innovation that transformed modern military operations and influenced civilian retail practices.

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Universal Product Code (UPC) barcodes
Radio Frequency Identification (RFID) tags
Standard Shipping Containers
Just-In-Time (JIT) inventory management