Which WWII military product's distinctive packaging design became so iconic that the company maintained it virtually unchanged for 70+ years, creating one of history's most recognizable brand identities?

In the realm of military history, certain brands have gained legendary status among veterans and collectors alike. From field gear that saved lives to iconic designs that defined eras of warfare, some manufacturers have achieved remarkable brand loyalty that spans generations. This poll tests your knowledge of how one particular wartime product transitioned from battlefield necessity to commercial success and cultural icon.

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Zippo lighters, with their windproof design and lifetime guarantee that made them treasured possessions for soldiers across multiple wars
Ray-Ban aviator sunglasses, originally designed for Air Force pilots but later becoming a civilian fashion statement
Jeep vehicles, whose rugged utility design from wartime transportation directly translated to post-war civilian markets
Swiss Army knives by Victorinox, whose officer's knife became standard issue for soldiers before becoming a global EDC phenomenon