Which revolutionary marketing campaign, developed during World War I, is credited with creating the modern concept of public relations and propaganda techniques still studied in military and marketing circles today?

Throughout military history, governments and military organizations have used innovative marketing campaigns to achieve various objectives - from boosting recruitment and maintaining morale to selling war bonds and promoting national unity. This trivia question focuses on one of the most influential marketing campaigns in military history that fundamentally changed how nations approached wartime public engagement.

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The Committee on Public Information (Creel Committee) campaign in the United States
Britain's Parliamentary Recruiting Committee poster campaigns
Germany's Imperial Naval Office's submarine warfare justification campaign
Russia's Bolshevik Revolutionary propaganda campaign