Which major American retail chain first established a significant commercial partnership with the U.S. military to operate stores on overseas bases during the post-WWII expansion of the PX system?

Post Exchange (PX) stores have been a cornerstone of military life for generations, offering tax-free shopping to service members and their families worldwide. These retail operations have evolved from simple commissaries to comprehensive department stores, becoming cultural institutions within military communities. This poll explores the commercial expansion of one of the most significant military retail networks in history.

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Sears, Roebuck and Co.
Army & Air Force Exchange Service (AAFES)
Woolworth's
Montgomery Ward