Which innovative retail concept did the U.S. military introduce in 1895 that revolutionized how goods were sold to service members and influenced modern retail?

Military exchanges (PX for Army/Air Force, BX for Air Force, NEX for Navy) have been a crucial part of military life for centuries, providing soldiers with essential goods and a taste of home. These retail operations have a fascinating corporate history and have evolved significantly from simple sutler wagons to modern department stores. Test your knowledge about this unique military retail phenomenon that bridges commerce and service.

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The Post Exchange (PX) system, replacing unregulated sutlers with standardized government-operated stores
Military Commissary Credit Cards, the first widespread implementation of retail credit in America
Self-service grocery shopping, allowing military families to select their own products without clerk assistance
Mail-order catalogs specifically for overseas troops, pioneering international retail distribution