Which military retail innovation was first introduced during World War II and revolutionized how military merchandise was sold to civilians?

Throughout history, militaries around the world have developed unique approaches to visual storytelling and merchandising that extend beyond the battlefield. From recruitment posters to museum gift shops, military retail has evolved significantly. This poll tests your knowledge about how military organizations have marketed themselves and their memorabilia to the public across different eras.

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PX (Post Exchange) themed department stores in civilian shopping centers
Military-themed trading cards packaged with consumer products
War bonds merchandising displays with themed collectibles
Battlefield tourism gift shops at former combat zones