Which military recruitment brand ambassador campaign is widely considered the most successful in history, generating over 40 million enlistment inquiries in its first decade?

Throughout history, military recruitment and public support have relied on effective brand ambassadors and marketing campaigns. From iconic posters to memorable slogans, these campaigns shaped public perception and boosted enlistment. This trivia question challenges you to identify the most successful military recruitment brand ambassador campaign based on documented impact and longevity. Test your knowledge of how military history and marketing strategies intersect!

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Uncle Sam's "I Want YOU" campaign (USA, WWI/WWII)
Lord Kitchener's "Your Country Needs YOU" campaign (UK, WWI)
"Be All You Can Be" campaign featuring actual soldiers (USA, 1980s-1990s)
"For King and Country" campaign featuring royal family members (British Empire, WWII)