Which conflict prompted the U.S. military to formalize its retail system, establishing the modern Post Exchange (PX) concept that continues to serve military personnel today?

Military shopping has a fascinating history that transformed how armed forces personnel access goods. The Post Exchange (PX) and Navy Exchange (NEX) systems represent one of the most successful retail operations in American military history, providing tax-free shopping and familiar products to service members worldwide. Test your knowledge about how these iconic military retail institutions came to be and their impact on military life through the decades.

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• American Civil War (1861-1865)
• Spanish-American War (1898)
• World War I (1914-1918)
• World War II (1939-1945)

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