Which retail innovation, first widely implemented during WWII by the U.S. military, revolutionized supply chain management and later became standard practice in civilian retail?

Throughout military history, retail innovations have played a crucial role in supplying armies and changing how war materiel reaches soldiers. From the sutlers of the American Civil War to modern military PXs and commissaries, retail systems have evolved alongside military needs. This poll tests your knowledge about a groundbreaking retail innovation that transformed military supply chains and influenced civilian retail practices worldwide.

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Standardized SKU (Stock Keeping Unit) system
Palletized shipping with standardized forklifts
Military Exchange retail stores (PX/BX system)
Automated inventory tracking via punch cards