Which military retail innovation, first introduced during WWII, revolutionized how troops could purchase items from home while deployed overseas?

The Post Exchange (PX) system has been a cornerstone of military life for generations, providing essential retail services to service members worldwide. This unique retail network has evolved from simple sutlers' wagons following troops in the 1800s to modern department store-like facilities. Beyond just shopping, these establishments have shaped military culture and morale. Test your knowledge about this distinctive military retail institution that has supported troops through wars and peacetime alike.

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• The Military Catalog Order System
• The V-Mail Shopping Program
• The PX Ration Card
• The Army Exchange Service's 'Gift from Home' program

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