Which WWII-era marketing campaign, created to boost civilian morale during the Blitz, was never officially distributed but later became an iconic design reprinted millions of times decades after the war?

Throughout military history, strategic marketing campaigns have played crucial roles in shaping public opinion, boosting morale, and supporting war efforts. From propaganda posters to innovative branding, these marketing tactics have often had far-reaching consequences beyond their immediate military objectives. Test your knowledge about one of the most influential marketing campaigns from World War II that revolutionized how governments communicate with citizens.

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"Keep Calm and Carry On"
"Loose Lips Sink Ships"
"We Can Do It!" (Rosie the Riveter)
"Dig for Victory"