Which famous military recruitment poster/slogan from WWI became so successful that its basic concept was adapted by multiple countries and is still referenced in modern advertising?

In military history, recruitment campaigns have played a crucial role in building armed forces during times of need. Some advertising slogans became so iconic they transcended their original purpose and entered popular culture. This trivia focuses on one of the most successful and enduring military recruitment campaigns in history, which fundamentally changed how governments appeal to potential recruits and established techniques still used in modern military advertising.

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"I Want YOU for U.S. Army" (Uncle Sam pointing directly at viewer)
"Loose Lips Sink Ships" (security warning poster)
"Keep Calm and Carry On" (British morale poster)
"We Can Do It!" (Rosie the Riveter poster)