Which war first saw the widespread commercial production and marketing of souvenir items specifically made for civilians on the home front?

Long before modern military museums sold replicas and memorabilia, there existed a fascinating history of military-themed consumer products. From the Napoleonic Wars to World Wars, military conflicts have spawned unique retail marketing phenomena and brand strategies. This trivia explores how military history intersected with early consumer culture, creating some of history's most interesting retail marketing campaigns and collectible merchandise.

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The American Civil War (1861-1865)
The Napoleonic Wars (1803-1815)
World War I (1914-1918)
The Crimean War (1853-1856)