Which innovative retail concept did the Army & Air Force Exchange Service (AAFES) pioneer in the 1980s that revolutionized how deployed troops accessed consumer goods?

The military retail system has a fascinating history that many civilians don't know about. Post Exchanges (PX) and Base Exchanges (BX) have evolved from simple sutler wagons following troops in the 1800s to billion-dollar retail operations. These military department stores provide tax-free goods to service members and their families while generating funds for morale, welfare, and recreation programs. Test your knowledge about this unique retail system that has supported troops throughout military history.

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Tactical Field Exchanges (TFE) - mobile retail units that could deploy to combat zones
Military Mail Order Catalog - allowing troops to order from a specialized catalog with expedited battlefield delivery
PX Credit Card - the first military-specific credit card allowing purchases on credit during deployments
Exchange Vending Operations - automated stores using early vending technology for remote bases