Which war era saw the U.S. Army officially establish the modern Post Exchange (PX) system that revolutionized how products were sold to military personnel?

Military post exchanges (PX) and base exchanges have been crucial to troop morale throughout modern warfare history. These retail establishments have evolved from simple sutler wagons following armies to sophisticated retail operations. This poll explores the fascinating history of military retail and how it transformed to meet soldiers' needs across different eras of conflict.

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Civil War (1861-1865)
Spanish-American War (1898)
World War I (1917-1918)
World War II (1941-1945)