Which retail innovation was first introduced to American military bases in 1895, revolutionizing how soldiers accessed consumer goods and eventually evolving into the modern PX/BX system?

The Post Exchange (PX) system represents one of the most unique retail innovations in history, serving military personnel worldwide. These stores have evolved from simple sutler wagons following Civil War troops to sophisticated retail operations that boost morale and provide familiar products to service members stationed far from home. This poll tests your knowledge about how military retail operations have transformed product delivery to troops throughout history.

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Army & Air Force Exchange Service (AAFES) stores
Post Canteens (precursor to the Post Exchange)
Military Commissary Supermarkets
Navy Ships Service Stores