During World War II (WW2), propaganda became one of the most powerful weapons of influence. While countries like Britain 🇬🇧, Germany 🇩🇪, the USA 🇺🇸, Japan 🇯🇵, and the Soviet Union 🇷🇺 fought on the battlefield, they also waged a fierce war of ideas and morale. In Britain, propaganda posters became the nation’s secret weapon. From the iconic “Keep Calm and Carry On” to “Dig for Victory” and “Careless Talk Costs Lives,” these designs inspired millions to stay strong during the darkest day